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Superplasticity of Non-Equilibrium Materials

Research Project

Project/Area Number 08242107
Research Category

Grant-in-Aid for Scientific Research on Priority Areas

Allocation TypeSingle-year Grants
Research InstitutionOsaka University

Principal Investigator

UMAKOSHI Yuukichi  Graduate School of Eng., Osaka University, Prof., 工学部, 教授 (00029216)

Co-Investigator(Kenkyū-buntansha) KAWAMURA Yoshihito  Tohoku Univ. Institute for Mater. Research, Assoc. Prof., 金属材料研究所, 助教授 (30250814)
HIGASHI Kenji  Osaka Pref. Univ. Dept. of Metallorgy and Mater. Sci., Prof., 工学部, 教授 (50173133)
HASEGAWA Tadashi  Tokyo Univ. of Agriculture and Tech., Fac. of Eng., Prof., 工学部, 教授 (50005328)
Project Period (FY) 1996 – 1998
Project Status Completed (Fiscal Year 1998)
Budget Amount *help
¥117,300,000 (Direct Cost: ¥117,300,000)
Fiscal Year 1998: ¥26,700,000 (Direct Cost: ¥26,700,000)
Fiscal Year 1997: ¥30,200,000 (Direct Cost: ¥30,200,000)
Fiscal Year 1996: ¥60,400,000 (Direct Cost: ¥60,400,000)
Keywordshigh strain rate superplasticity / boundary sliding / dislocation / amorphous alloys / intermetallic compounds / deformation / elongation / fracture / アモルファス合金 / 超塑性 / 非平衡材料 / 粘弾性 / ボイド / 非晶質 / 粒界 / メカニカルアロイング / 塑性 / 超素性 / 超微細粒 / m種
Research Abstract

Superplastic phenomena in non-equilibrium materials were examined focusing on several factors such as (a) the relation between grain boundary structures and boundary sliding, (b) effect of cavitation on superplastic elongation, and (c) effect of multiplication and annihilation of dislocations. The controlling factors and deformation mechanisms of superplasticity were determined. In addition, new forming processes were developed for industrial applications. The main results obtained during this research term from 1996 to 1998 are as follows.
(1) A special accommodation process to relax the stress concentration at grain boundaries and interfaces is required for high strain rate superplasticity which appeared in ultra fine grained alloys and composites. A liquid phase acts as an accommodation helper. A suitable condition for high strain rate superplasticity was obtained focusing on the strain rate, temperature and the microstructures containing critical size and volume fraction of disperse … More d particles. An appropriate working process is proposed for industrial applications. (2) In micro duplex alloys, small particles not only suppressed the grain growth but also acted as nucleation sources for dislocation multiplication. The motion, multiplication and annihilation of dislocations are very important for high strain rate superplasticity in addition to the grain boundry sliding. (3) On the basis of the dependence of cavitation on the strain rate, temperature and stress-strain curves in Al-Mg-Cu composites consolidated after mechanical griding, effect of grain boundary sliding and deformation in grains on superplasticity was quantitatively evaluated. (4) In Al-Ti intermetallic compound single crystals containing unstable small phases, a new superplastic phenomenon which was independent of the grain boundary sliding was found. The interaction between dislocations and the small secondary phase induced the frequent climb motion and uniform deformation, resulting in the stress accommodation and huge elongation. (5) The characteristics in superplasticity of Pd-, La- and Zr-based amorphous alloys were examined in a wide supercooled liquid region. The superplasticity occurred at a low flow stress of several MPa, 0.6〜0.7 of melting temperature and high strain rate and high m-value of 1 for a Newtonian viscous flow. A new mechanism for the superplasticity was proposed based on the superviscoplasticity. New amorphous alloys showing superplasticity were developed. (6) Industrial technology for working and forming materials using superplasticity was developed and new materials showing superior mechanical and magnetic properties were developed. Less

Report

(4 results)
  • 1998 Annual Research Report   Final Research Report Summary
  • 1997 Annual Research Report
  • 1996 Annual Research Report
  • Research Products

    (124 results)

All Other

All Publications (124 results)

  • [Publications] T.Mukai,H.Kawazoe,K.Higashi: "Dyamic Mechanical Properties of a Near Nano Aluminium Alloy Processed by Equal - Anqular - Extrusion"Nano Stractured Materials. 10. 755-765 (198)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M.Habuchi,H.Iwasaki,K.Higashi: "Investigation og Shear Deformation in a Semi-Solid state of a High Strained Si_3N_4p/Al-Mg-Si Composite"Acta Mater. 46. 5335-5343 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Tagata,K.Higashi: "Quantitative Asessmnt of Saperplastic Deformation Behavior in a Commercial 5083 Alloy"Mater. Sci. Eng. A. 252. 199-202 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Kawamura,T.Shibata,A.Inoue: "Changes in Stress Relazatioon due to Yielding in Zr_<65>Al_<10>Ni_<10>Cu_<15> Metallic Glass"Jpn. J.Appl. Phys.. 37. L666-668 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T.Nakamura,Y.Kawamura,A.Inoue: "Superviscoplasticity in Pd-Based Metallic Glass"Advanced Mter. Ras.. 1. 494-497 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] 河村能人、増本健、井上明久、井村徹: "アモルファス合金粉末の固化成形"まてりあ. 37. 133-141 (198)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T. Mukai, M. Kawazoe and K. Higashi: "Dynamic Mechanical Properties of a Near Nano Aluminium Alloy Processed by Equal-Angular-Extrusion"Nano Structured Materials. 10. 755-765 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] M. Mabuchi, H. Iwasaki and K. Higashi: "Investigation of Shear Deformation in a Semi-Solid State of a High Strained SiィイD23ィエD2NィイD24pィエD2/Al-Mg-Si Composite"Acta Mater.. 46. 5335-5343 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T. Tagata and K. Higashi: "Quantitative Asessmnt of Superplastic Deformation Behavior in a Commercial 5083 Alloy"Mater. Sci. Eng. A. 252. 199-202 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y. Kawamura, T. Shibata and A. Inoue: "Changes in Stress Relazation due to Yielding in ZrィイD265ィエD2AlィイD210ィエD2NiィイD210ィエD2CuィイD215ィエD2 Metallic Glass"Jpn. J. Appl. Phys.. 37. L666-668 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] T. Nakamura, Y. Kawamura and A. Inoue: "Superviscoplasticity in Pd-Based Metallic Glass"Advanced Mter. Res.. 1. 494-497 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y. Kawamura, T. Masumoto, A. Inoue and T. Imura: "Consolidation of Amorphous Alloy Powder"Materia. 37. 133-141 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1998 Final Research Report Summary
  • [Publications] Y.Umakoshi et al.: "supuplastic Dislocation of Al-Cu Ribbons Produced by Melt Spctra Method" PRICM-3,TMS. 2323-2330 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Umakoshi et al.,: "The Role of Dislocations in High-Strain-Rate Superplasticity of on Al-Ni-Misch Metal Alloy." Acta Mater,. 46. 4469-4478 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Nakano et al.,: "Stress Anomaly in AL-rich TiAl Single Crystals Deformed by the Motion of 1/2<110J Ordinary Dislacations" Phil.Mag.Lett.78. 885-391 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Umakoshi et al.,: "High-Temperature Defarmation in Ti-62.5at.%Al Single Cnystels Containing Small Al_2Ti-type Precipitates" Inter.Conf.on Toward,Innovation in Superplanticity II. 15-15 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Ohtera et al.: "Superplastic Behavion and Micro-Structure in Auoyhacs La_<55> Al_<25> Ni_<20> Alloy." Inter.Conf.on Towards Innouation in Superplanticity II. 20-20 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] N.Furushiro et al.: "Superplastic Characteristico of T2P Containity Various Amount of SiO_2" Inter.Conf.on Towards Innouation in Superplanticity. 94-94 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.hasegawa et al.: "Origin of Superplastic Elongation in Aluminum Alloys Produced by Mechanical Milling" Acta Mater.46. 6001-6007 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 東 健司 等: "最近の超塑性の研究・開発" 日本航空宇宙学会誌. 46. 71-80 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Iwasaki et al.: "Superplastic Behavior and Caviation in High-Strain-rate Superplastic Si_3N_4p/Al-Mg-Si Composites" Met.Mater.Trans.A29. 677-683 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] K.Iwasaki et al.: "Mechanisms of Cavity Shrinkage by Static Annealing in a High Strain Rate Superplastic Si_3N_4p/Al-Mg-Si Composite" Mater.Sci.Eng.A242. 32-38 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 岩崎 源 等: "高速超塑性とキャビテーション" 熱処理. 38. 13-17 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Mabuchi et al.: "Superplastic Constitutive Eguation and Rate-Controlling Process in Aluminium Matrix Composites with Discontinvovs Fiber and Particle Reinforcements" J.Mater.Res.13. 640-648 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Iwasaki et al.: "The Characteristics of Microcavitation in High Strain Rate Superplasticity" Mater.Sci.Eng.A246. 118-124 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Mabuchi et al.: "Mechanical Properties of Pure Aluminum Processed by Equal Channel Angular Extrusion" J.Mater.Sci.17. 215-217 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Iwasaki et al.: "Fracture Mechanism in a High Strain Rate Superplastic Aluminum Matrix Composite" Superplasticity and Superplastic Forming. 209-215 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Mukai et al.: "Ductility and Canvitation at Elevated Temperatures in a Superplastic ZK60-Based Composite" Superplasticity and Superplastic Forming. 313-319 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 岩崎 源 等: "実用5083合金の超塑性特性の実験的評価とその変形機構の解析" 日本機械学会論文集A編. 64. 260-266 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Mabuchi et al.: "Grain Refinement and Superplasticity in MG Alloys" PCIRM-3 on Advanced Materials and Processing. 1813-1818 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Mukai et al.: "Superplastic Behavior of Doubly-Extruded ZK60/SiC/17p Magnesium-Based Composite Over a Wide Range of Temperature" PCIRM-3 on Advanced Materials and Processing. 1891-1896 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Iwasaki et al.: "Experimental Analysis of Superplastic Deformation Mechanisms in a Commertial 5083 Alloy" PCIRM-3 on Advanced Materials and Processing. 1885-1890 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Hirata et al.: "Contribution of Grain Boundary Sliding in Superplastic 7475 Alloys Processed by Powder Metallvrgy and Ingot Metallvrgy" PCIRM-3 on Advanced Materials and Processing. 1765-1770 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Kanahashi et al.: "Mechanical Properties in Al_<94>Cr_1Mn_3Cu_2 Alloy Strengthenerd by Nano-Quasicrystallin Particles" PCIRM-3 on Advanced Materials and Processing. 2091-2096 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Iwasaki et al.: "Grain Size Refinement and Mechanical Properties of Foil Metallurgically Processed 7475 Aluminum Alloy" Mater.Sci.Teohnology. 14. 579-584 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Mukai et al.: "Strain-Rate Dependence of Mechanical Properties in AA5056 Al-Mg Alloy Processed by Equal-Channel-Angular-Extrusion" Mater.Sci.Eng.A247. 270-274 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Mabuchi et al.: "The Processing and Applications of High-Strain-Rate Superplastic Materials" JOM. 50. 34-39 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Mukai et al.: "Experimental Study of a Structural Magnesium Alloy with High Absorption Energy under Dynamic Loading" Scripta Mater.39. 1249-1253 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Mukai et al.: "Dynamic Mechanical Properties of a Near-Nano Aluminum Alloy Processed by Equal-Channel-Angvlar-Extrusion" Nano Structured Materials. 10. 755-765 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] M.Mabuchi et al.: "Investigation of Shear Deformation in a Semi-Solid State of a High Strainelastic Si_3N_4p/Al-Mg-Si Composite" Acta Mater.46. 5335-5343 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] H.Iwasaki et al.: "Quantitative Assessment of Superplastic Deformation Behavior in a Comercial 5083 Alloy" Mater.Sci.Eng.A252. 199-202 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Kawamura et al.: "Superplasticity in Pd_<40>Ni_<40>P_<20> Metallic Glass" Scripta Metall. Mater.39. 301-306 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Kawamura et al.: "Change in Stress Relaxation dve to Yilding in Zr_<65>Al_<10>Ni_<10>Cu_<15> Metallic Glass" Jpn.J.Jpn.Appl.Phys.37. L666-L668 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Kawamura et al.: "High Strain-Rate Superplasticity in Zr-and La-Based Metallic Glasses" PRICM 3. 1861-1866 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Kawamura et al.: "Superviscoplastic Forming of Zr-Based Metallic Glass" Proceeding of the Special Symposium on Advanced Materials-SSAM-4. 490-493 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Kawamura et al.: "Superviscoplastic Consolidation of Zr-Based Metallic Glass" Proceeding of the Special Symposium on Advanced Materials-SSAM-4. 486-489 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] T.Nakamura et al.: "Superviscoplasticity in Pd-Based Metallic Glass" Proceeding of the Special Symposium on Advanced Materials-SSAM-4. 494-497 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] 河村能人 等: "アモルファス合金粉末の固化成形" 日本金属学会報 まてりあ. 37. 133-141 (1998)

    • Related Report
      1998 Annual Research Report
  • [Publications] Y.Umakoshi, et al.: "Superplasticity of HoSi/NbSi_2 Puplex Silicides" Mater.Sci.Forum. 233/234. 271-278 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] N.Furushiro et al.: "Dynamics in High Strain Rate Superplanticity" Mater.Sci.Forum. 233/234. 171-176 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Umakoshi et al.: "Microstrueture Evolution Dusing High-Strain-Rate Sufeplastic Flow in Al-Ni-Misch,Nloy Produced From Amorphous Powdses" Thermec'97. 2. 1983-1990 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Nakano et al.: "Effect of Al_5Ti_3-Type Ordering on Plastic Behavior of Al-rich TiAl Single Crystals" Thermec'97. 2. 1497-1503 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Shibayanagi et al.: "Effect of Secondasy Phase on Grain Growth Process of α/β Dual Phase Cu Zn Alloy." Scripta Mater.,. 37. 667-672 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Matsumoto et al.: "On the Role of Grain Boundary Character Distribution in Grain Growth of Al-Ng Alloys" Acta Metall.Mater.45. 439-451 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Umakoshi et al.: "Grain Growth and Grain Orientation Distribution of Al Mg Alloys." Materials and Design. (in press). (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Hasegawa et al.: "Effect of Adition of Alloying Elements on Seporplastic Behavir in Mechanical Alloyed Aluminum Alloys" Mater.Sci.Forum. 233/234. 163-170 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Hasegawa et al.: "Microstructural Study of High Strain Pate Supeuplosticity in Mechanically Alloyed Aluminum Alloys." Thermec'97. 2. 1961-1968 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Yasuno et al.: "Stress-Strain Behavior and Contisuous Observation of Reformation in Superplastic MA Al Alloys" Thermec'97. (in press). (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 岩崎源, 等.他: "高速超塑性Si_3N_<4P>/2124Al複合材料の空洞および破壊に及ぼす液相の影響" 材料. 46. 143-147 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] N.Saito et al.: "The Aging Behanion and the Mechanical Properties of the Mg-Zi-AL-Cu Alloy." Scripta Mater. 36. 551-555 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Kawazoe et al.: "Elevated Temperature Mechanical Properties of a 65056 Al-Mg Alloy Processed by Egual-Channel-Etrusion" Scripta Mater.36. 697-905 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Mabuchi et al.: "Row Tenperature Superplosticity in on A291Magnesium Alloy Processed by ECAE" Scripta Mater.36. 681-686 (1997)

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      1997 Annual Research Report
  • [Publications] H-G.Jeong et al.: "Partial Melting atclnterbacas and Grain Boundasies and Grain Boundasies for High Strain Rate Superplestic Materials" Interfau Science. 4. 357-368 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] H.Iwasaki et al.: "The Role of Liguid Phase in Caribation in a Si_3N_<4P>/Al-Mg Composite Exhibiting High-Strain-Rate Superplasticity" Acta Mater.45. 2759-2766 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] B.T.Lee.et al.: "Interfacial Structuri of Si_3 N_4 Whisker Reinforced 7064 Aluminum Composite" J.Mater.Sci.Lett.16. 206-208 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 松岡秀明, 等.他: "Al-Zn-Mg-Cu未合金の強化機構に対する実験的検討" 材料. 46. 665-670 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Mukai et al.: "Ductility Enhancementat Elevated Temperature in a ZKbo-Based Composite" Mater.Sci.Forum. 233/234. 261-268 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Higashi et al.: "Racent Works in High Strain Rate Superplasticity" Mater.Sci.Forum. 233/234. 155-162 (1997)

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      1997 Annual Research Report
  • [Publications] M.Kawazoe et al.: "Grain Refinemant and Mechanical Properties at Elevated Temperature of Al-Mg Alloy" Mater.Sci.Forum. 233/234. 207-214 (1997)

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      1997 Annual Research Report
  • [Publications] H.Iwasaki et al.: "Canitation in Superplostic Al-Mg Alloy" Mater.Sci.Forum. 233/234. 81-87 (1997)

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      1997 Annual Research Report
  • [Publications] K.Higashi et al.: "Critical Aspects of High Strain Rate Superplasticity" Mater.Sci.Forum. 243/245. 267-276 (1997)

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      1997 Annual Research Report
  • [Publications] H.Iwasaki et al.: "Conitation in High Strain Rate Superplastic Metal Matrix Composite" Mater.Sci.Forum. 243/245. 303-308 (1997)

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      1997 Annual Research Report
  • [Publications] T.Mukai et al.: "Superplastic Characteristics in a Poully-Extruded ZK60/Sic/19P Magnesum-Based Composite" Mater.Sci.Forum. 243/245. 321-326 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Mabuchi et al.: "Low Temperature Superplasticity of Magnesium Alloys Processed by FCAE." Mater.Sci.Forum. 243/245. 547-552 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 松岡秀明, 等他: "X線法による残留応力および不均一ひずみを用いたAl-Zn-Mg-Cu系合金の耐SCC特性の評価" 日本機械学会論文集A. 63. 96-103 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 松岡秀明, 等他: "Al-Zn-Mg-Cu系合金の疲労亀裂伝播特性に及ぼす結晶粒寸法の影響" 日本機械学会論文集A. 63. 2303-2311 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Mabuchi et al.: "Assessmento of Accomnodation Process by Liguid Phase for Superplastic Flow in Si_3N_4/Al-Mg-SiMetal Matrix Composite" J.Mater.Res.12. 2332-2336 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] S.Fujino et al.: "High-Strain-Rate Superplastic Behavioc in a Super-Rapidly-Solidipied Al-Si system Alloy" Scripta Mater.37. 673-678 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] M.Mabuchi et al.: "Grain Size Control in Metal Matrix Composites" Proc.of Recrystallization and Ralated Phenomena. 611-618 (1997)

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      1997 Annual Research Report
  • [Publications] K.Higashi et al.: "Critical Assessments of Caritation Fractuse Process in High-Strain Rate Superplastic Materials." Proc.of Rocent Advances in Fracture. 273-284 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Asahina et al.: "Mechanical Properties of Mg-Si Alloys" Proc.of 3rd Inter.Magnesium Conf.439-447 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] N.Saito et al.: "Effect of Alloying Elements on the Aging Behavior of Mg-Li-Al Alloy" Proc.of 3rd Inter.Magnesium Conf.431-437 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 東健司: "水あめみたいな金属-超塑性" 日本機械学会誌. 100. 4-5 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 東健司: "超塑性材料の最大伸び値" まてりあ. 36. 1131-1131 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Kawamura et al.: "Superplastic Deformation of Zr_<65>Al_<10>Ni_<10>Cu_<15> Metallic Glass" Scripta Metall.Muter.37. 431-436 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Kawamura: "Stress Overshoot in Stress-Strain Curves of of Zr_<65>Al_<10>Ni_<10>Cu_<15> Metallic Glass" Appl.Phys.Lett.71. 779-781 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] A.Inoue et al.: "High-Strain-Rate Superplasticity of Super cooled higuid for Anophous Alloys" Mater.Sci.Forum. 233/234. 147-154 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Kawamura et al.: "Workability of Zr_<65>Al_<10>Ni_<10>Cu_<15> Bulk Metallic Glass at Supercooled Liguid" Acta Metall.Mater.46. 253-263 (1997)

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      1997 Annual Research Report
  • [Publications] Y.Kawamura et al.: "Deformation Bahavior and Workahility of Supercooled Liguid in Zr_<65>Al_<10>Ni_<10>Cu_<15> Metallic Glass" Sci.Rop.RITV. A43. 107-113 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] 河村能人, 等他: "アモルファス合金粉末の固化成形" 日本金属学会報,まてりあ. 2. 135-135 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] Y.Kawamura et al.: "Fabrication of Bulk Amorphous Alloys by Powder Consolidation" J.Powder Metallwgy. 33. 50-61 (1997)

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  • [Publications] H.Kato et al.: "Bulk Glassy Zr-Based Alloys Prepared by Conselidation of Glasy Alloy Powder" Mater.Sci.Eng.,. A226/228. 458-462 (1997)

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  • [Publications] 河村能人, 等他: "高清浄環境下における超急冷粉末冶金連続プロセスとそれを用いた新材料の開発" 粉体および粉末冶金. 44. 921-929 (1997)

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  • [Publications] T.H.Lee et al.: "Mechanical Properties of Rapidly Solidified Al-Si-Ni-Ce.P/M Alloys" Scripta Metall.Matery. 36. 475-480 (1997)

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  • [Publications] Y.Kawamura et al.: "Rapidly Solidified Metallwgy Al-Ti-Fe Alloys" Scripta Metall.Matery. 37. 205-210 (1997)

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  • [Publications] 木村久道, 等他: "準結晶を含むガス噴霧Al-Cr系合金粉末の押出し成形と機械的性質" 粉体および粉末冶金. 44. 858-863 (1997)

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  • [Publications] 木村久道, 等他: "メカニカルグライディング処理したAl-7.9%V-4%Fe合金粉末の押出し成形と耐熱強度" 軽金属. 47. (1997)

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  • [Publications] K.Aoki et al.: "Nenocrystalline TeAl Compacts Prepared by HDDR and Hot Pressing" Mat.Res.Soc.Symp.Proc.460. 153-158 (1997)

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  • [Publications] Y.Umakoshi: "Superplasticity of MoSi_2/NbSi_2 Suplex Silicides" Mater.Sci.Forum.233-234. 163-170 (1997)

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  • [Publications] N.Furushiro: "Microstructural Dynmics in High Strain Rate Superplasticity" Mater.Sci.Forum. 233-234. 171-176 (1997)

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  • [Publications] N.Furushiro: "Grain Boundary Sliding Behavior during Superplastic Deformation in a Sn-Pb Eutectic Alloy" Mater.Sci.Forum. 243-245. 109-113 (1997)

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  • [Publications] T.Shibayanagi: "Grain Rotation in Ni_3Al" Scripta Mater.34. 1491-1495 (1996)

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  • [Publications] T.Hasegawa: "Effects of Addition of Alloying Elements on Superplastic Behavior in Mechanically Alloyed Aluminum Alloys" Mater.Sci.Forum. 233-234. 163-170 (1997)

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  • [Publications] H.Iwasaki: "Cavitation Control by Static Annealing after Deformation of a Si_3N_4p/Al-Mg-Si composite at High-Strain-Rates" Scripta Mater.34・7. 1179-1184 (1996)

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  • [Publications] H.Iwasaki: "The Development of Cavitation in Superplastic Aluminum Composites Reinforced with Si_3N_4" Mater.Sci.Eng.208・4. 116-121 (1996)

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  • [Publications] H.Iwasaki: "Cavitation and Fracture in High Strain Rate Superplastic Si_3N_4p/Al Alloy Composites" Mater.Sci.Technol.12・6. 505-512 (1996)

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  • [Publications] M.Mabuchi: "Activation Energy for Superplastic Flow in Aluminum Matrix Composites Exhibiting High-Strain-Rate Superplasticity" Scripta Mater.34・12. 1893-1897 (1996)

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  • [Publications] H.G.Jeong: "Interface Structure of Si_3N_4-Whisker-Reinforced Al-Mg-Si(Al Alloy 6061) Composites Studied by High-Resolution Electron Microscopy" Phil.Mag.Lett.74・2. 73-80 (1996)

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  • [Publications] S.Wada: "A Quanitative Analysis of Caviation in Al-Cu-Mg Metal Matrix Composites Exhibiting High Strain Rate Superplasticity" J.Mater.Res.11・7. 1755-1764 (1996)

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  • [Publications] M.Mabuchi: "High-Strain-Rate Superplasticity in Magnesium Matrix Composites Contaning Mg_2Si Particles" Phil.Mag.A. 74・4. 957-964 (1996)

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  • [Publications] A.Uoya: "Superplastic Deformation Characteristics and Consitution Equation in Repidly Solidified Mg-Al-Ga Alloy" J.Mater.Res.11・11. 2731-2737 (1996)

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  • [Publications] M.Mabuchi: "Elevated Temperature Mechanical Properties of Magnesium Alloys Containing Mg_2Si" Mater.Sci.Technol. 12・1. 35-39 (1996)

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  • [Publications] 岩崎 源: "粉末冶金法により作製したマグネシウム合金の機械的性質" 粉体および粉末冶金. 43・11. 1350-1353 (1996)

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  • [Publications] Y.Kawamura: "Deformation Behavior of Zr_<65>Al_<10>Ni_<10>Cu_<15> Glassy Alloy with Wide Supercooled Liquid Region" Appl.Phys.Lett.69. 1208-1210 (1996)

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  • [Publications] A.Inoue: "Viscous Flow Deformation of Supercooled Liquid for Bulk Glassy Zr_<55>Al_<10>Ni_5Cu_<30> Alloy" Mater.Trans.JIM. 37. 713-718 (1996)

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  • [Publications] A.Inoue: "High Strain-Rate Superplasticity of Supercooled Liquid for Amorphous Alloys" Materials Science Forum. 233-234. 147-154 (1997)

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  • [Publications] Y.Kawamura: "Effects of Extrusion Conditions on Mechanical Properties in Zr_<65>Al_<10>Ni_<10>Cu_<15> Glassy Alloy Compacts" Mater.Sci.Eng.A219. 39-43 (1996)

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  • [Publications] Y.Kawamura: "Consolidation of Glassy Alloy Powders at Supercooled Liquid State" Advances in Powder Metallurgy & particulate Materials. 7. 365-380 (1996)

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  • [Publications] H.Kato: "High Tensile Strength Bulk Classy Alloy Zr_<65>Al_<10>Ni_<10>Cu_<15> Prepared by Extrusion of Atomized Glassy Powder" Mater.Trans.JIM. 37. 70-77 (1996)

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  • [Publications] Y.Kawamura: "Production of Nanocrystalline Fe_<86>Zr_7B_6Cu_1 Compacts and Their Soft-Magnetic Properties" Sci.Rep.RITU. A39. 133-141 (1996)

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  • [Publications] A.Kojima: "Soft Magnetic Properties of Bulk Nanocrystalline Fe-(Zr,Hf)-B Alloys Produced Extruding Amorphous Powders" Sci.Rep.RITU. A39. 127-132 (1996)

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  • [Publications] A.Kojima: "Soft-Magnetic Properties of Nanocrystalline Fe-Zr-B-Ni Bulk Alloy Produced by Warm Extruction" Jpn.J.Appl.Phys.35. L19-L22 (1996)

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  • [Publications] Y.Kawamura: "Nanocrystalline Soft-Magnetic Fe-Zr-B-Cu Composites by Consolidation of Amorphous Powders Coated with OxideFilm through Sol-Gel Process" Jpn.J.Appl.Phys.35. L828-L831 (1996)

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  • [Publications] Y.Kawamura: "Densification Behavior of Amorphous and Nanocrystalline Fe_<88>Zr_7B_3Ni_2 Powders under Uniaxial Hot-Pressing" Advances in Powder Metallurgy & Particulate Materials. 5. 159-170 (1996)

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Published: 1996-04-01   Modified: 2019-02-15  

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