1998 年度実績報告書

非平衡材料超塑性

研究課題

研究課題/領域番号	08242107
研究種目	特定領域研究(A)
研究機関	大阪大学
研究代表者	馬越佑吉大阪大学, 大学院・工学研究科, 教授 (00029216)
研究分担者	河村能人東北大学, 金属材料研究所, 助手 (30250814) 東健司大阪府立大学, 工学部, 教授 (50173133) 長谷川正東京農工大学, 工学部, 教授 (50005328)
キーワード	アモルファス合金 / 超塑性 / 非平衡材料 / 粘弾性 / 転位 / 粒界すべり / ボイド / 破壊
研究概要	本年度の研究において、 (1) 高濃度γ-TiAl中に存在する各種長周期規則構造を有する微細金属間化合物相の相安定性と超塑性挙動、(2) Al基メカニカルアロイング合金の超塑性におよぼす粒界すべり以外の変形様式の寄与、(3)非平衡材料の高速超塑性特性とその変形機構、特に集中応力緩和の付随調整機構、(4)アモルファス合金の超塑性、特に金属ガラス高速超塑性と高加工性、耐熱性を有するナノ結晶アルミニウム合金の開発、に関して新たな進展が見られた。多くの研究成果の中の特記すべき事項は次の通り。 (a)La基およびPd基金属ガラスは、Zr基金属ガラスに比べて、優れた高速超塑性を示す。この超塑性は、数MPaの低応力で変形可能、0.6〜0.7Tmで起こる、m値が1に近いニュートン粘性を示す、等の特徴を有し、バルク成型加工が可能であるのみならず、室温で高強度、高靭性を示すことを見出した。(b)Al・遷移金属系合金を幅広く探索し、優れた高強度を示すN-Ti-Fe-Cr RS P/M合金を開発した。この合金は微細組織制御すれば、高速超塑性加工が可能である。(c)高Al濃度γ TiAl単結晶に粒界すべりの関与しない超塑性が発現することを見出した。この合金の超塑性は、L1_0型規則構造母相中に長周期規則構造を有する,Al_5Ti_3規則相の相安定性と密接に関係している。(d)高速超塑性の変形機構を、集中応力緩和の付随調整機構の観点から、accommodation helperの存在の必要条件を応力集中の緩和機構に及ぼすミクロ組織学的因子から考察するとともに、複合粒子を有するAl基複合材料で実験的に検証した。その結果、超塑性を発現させるためには液相の存在が必要であるとの結論を得た。

研究成果

(36件)

すべてその他

すべて文献書誌 (36件)

[文献書誌] Y.Umakoshi et al.: "supuplastic Dislocation of Al-Cu Ribbons Produced by Melt Spctra Method" PRICM-3,TMS. 2323-2330 (1998)
[文献書誌] 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)
[文献書誌] 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)
[文献書誌] 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)
[文献書誌] 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)
[文献書誌] N.Furushiro et al.: "Superplastic Characteristico of T2P Containity Various Amount of SiO_2" Inter.Conf.on Towards Innouation in Superplanticity. 94-94 (1998)
[文献書誌] T.hasegawa et al.: "Origin of Superplastic Elongation in Aluminum Alloys Produced by Mechanical Milling" Acta Mater.46. 6001-6007 (1998)
[文献書誌] 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)
[文献書誌] 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)
[文献書誌] 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)
[文献書誌] 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)
[文献書誌] 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)
[文献書誌] H.Iwasaki et al.: "The Characteristics of Microcavitation in High Strain Rate Superplasticity" Mater.Sci.Eng.A246. 118-124 (1998)
[文献書誌] M.Mabuchi et al.: "Mechanical Properties of Pure Aluminum Processed by Equal Channel Angular Extrusion" J.Mater.Sci.17. 215-217 (1998)
[文献書誌] H.Iwasaki et al.: "Fracture Mechanism in a High Strain Rate Superplastic Aluminum Matrix Composite" Superplasticity and Superplastic Forming. 209-215 (1998)
[文献書誌] T.Mukai et al.: "Ductility and Canvitation at Elevated Temperatures in a Superplastic ZK60-Based Composite" Superplasticity and Superplastic Forming. 313-319 (1998)
[文献書誌] 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)
[文献書誌] M.Mabuchi et al.: "Grain Refinement and Superplasticity in MG Alloys" PCIRM-3 on Advanced Materials and Processing. 1813-1818 (1998)
[文献書誌] 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)
[文献書誌] 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)
[文献書誌] 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)
[文献書誌] 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)
[文献書誌] H.Iwasaki et al.: "Grain Size Refinement and Mechanical Properties of Foil Metallurgically Processed 7475 Aluminum Alloy" Mater.Sci.Teohnology. 14. 579-584 (1998)
[文献書誌] 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)
[文献書誌] M.Mabuchi et al.: "The Processing and Applications of High-Strain-Rate Superplastic Materials" JOM. 50. 34-39 (1998)
[文献書誌] T.Mukai et al.: "Experimental Study of a Structural Magnesium Alloy with High Absorption Energy under Dynamic Loading" Scripta Mater.39. 1249-1253 (1998)
[文献書誌] 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)
[文献書誌] 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)
[文献書誌] H.Iwasaki et al.: "Quantitative Assessment of Superplastic Deformation Behavior in a Comercial 5083 Alloy" Mater.Sci.Eng.A252. 199-202 (1998)
[文献書誌] Y.Kawamura et al.: "Superplasticity in Pd_<40>Ni_<40>P_<20> Metallic Glass" Scripta Metall. Mater.39. 301-306 (1998)
[文献書誌] 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)
[文献書誌] Y.Kawamura et al.: "High Strain-Rate Superplasticity in Zr-and La-Based Metallic Glasses" PRICM 3. 1861-1866 (1998)
[文献書誌] Y.Kawamura et al.: "Superviscoplastic Forming of Zr-Based Metallic Glass" Proceeding of the Special Symposium on Advanced Materials-SSAM-4. 490-493 (1998)
[文献書誌] Y.Kawamura et al.: "Superviscoplastic Consolidation of Zr-Based Metallic Glass" Proceeding of the Special Symposium on Advanced Materials-SSAM-4. 486-489 (1998)
[文献書誌] T.Nakamura et al.: "Superviscoplasticity in Pd-Based Metallic Glass" Proceeding of the Special Symposium on Advanced Materials-SSAM-4. 494-497 (1998)
[文献書誌] 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)

1998 年度 実績報告書

非平衡材料超塑性

研究代表者

馬越 佑吉 大阪大学, 大学院・工学研究科, 教授 (00029216)

研究成果

[文献書誌] Y.Umakoshi et al.: "supuplastic Dislocation of Al-Cu Ribbons Produced by Melt Spctra Method" PRICM-3,TMS. 2323-2330 (1998)

[文献書誌] 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)

[文献書誌] 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)

[文献書誌] 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)

[文献書誌] 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)

[文献書誌] N.Furushiro et al.: "Superplastic Characteristico of T2P Containity Various Amount of SiO_2" Inter.Conf.on Towards Innouation in Superplanticity. 94-94 (1998)

[文献書誌] T.hasegawa et al.: "Origin of Superplastic Elongation in Aluminum Alloys Produced by Mechanical Milling" Acta Mater.46. 6001-6007 (1998)

[文献書誌] 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)

[文献書誌] 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)

[文献書誌] 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)

[文献書誌] 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)

[文献書誌] 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)

[文献書誌] H.Iwasaki et al.: "The Characteristics of Microcavitation in High Strain Rate Superplasticity" Mater.Sci.Eng.A246. 118-124 (1998)

[文献書誌] M.Mabuchi et al.: "Mechanical Properties of Pure Aluminum Processed by Equal Channel Angular Extrusion" J.Mater.Sci.17. 215-217 (1998)

[文献書誌] H.Iwasaki et al.: "Fracture Mechanism in a High Strain Rate Superplastic Aluminum Matrix Composite" Superplasticity and Superplastic Forming. 209-215 (1998)

[文献書誌] T.Mukai et al.: "Ductility and Canvitation at Elevated Temperatures in a Superplastic ZK60-Based Composite" Superplasticity and Superplastic Forming. 313-319 (1998)

[文献書誌] 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)

[文献書誌] M.Mabuchi et al.: "Grain Refinement and Superplasticity in MG Alloys" PCIRM-3 on Advanced Materials and Processing. 1813-1818 (1998)

[文献書誌] 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)

[文献書誌] 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)

[文献書誌] 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)

[文献書誌] 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)

[文献書誌] H.Iwasaki et al.: "Grain Size Refinement and Mechanical Properties of Foil Metallurgically Processed 7475 Aluminum Alloy" Mater.Sci.Teohnology. 14. 579-584 (1998)

[文献書誌] 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)

[文献書誌] M.Mabuchi et al.: "The Processing and Applications of High-Strain-Rate Superplastic Materials" JOM. 50. 34-39 (1998)

[文献書誌] T.Mukai et al.: "Experimental Study of a Structural Magnesium Alloy with High Absorption Energy under Dynamic Loading" Scripta Mater.39. 1249-1253 (1998)

[文献書誌] 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)

[文献書誌] 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)

[文献書誌] H.Iwasaki et al.: "Quantitative Assessment of Superplastic Deformation Behavior in a Comercial 5083 Alloy" Mater.Sci.Eng.A252. 199-202 (1998)

[文献書誌] Y.Kawamura et al.: "Superplasticity in Pd_<40>Ni_<40>P_<20> Metallic Glass" Scripta Metall. Mater.39. 301-306 (1998)

[文献書誌] 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)

[文献書誌] Y.Kawamura et al.: "High Strain-Rate Superplasticity in Zr-and La-Based Metallic Glasses" PRICM 3. 1861-1866 (1998)

[文献書誌] Y.Kawamura et al.: "Superviscoplastic Forming of Zr-Based Metallic Glass" Proceeding of the Special Symposium on Advanced Materials-SSAM-4. 490-493 (1998)

[文献書誌] Y.Kawamura et al.: "Superviscoplastic Consolidation of Zr-Based Metallic Glass" Proceeding of the Special Symposium on Advanced Materials-SSAM-4. 486-489 (1998)

[文献書誌] T.Nakamura et al.: "Superviscoplasticity in Pd-Based Metallic Glass" Proceeding of the Special Symposium on Advanced Materials-SSAM-4. 494-497 (1998)

[文献書誌] 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)

1998 年度実績報告書

馬越佑吉大阪大学, 大学院・工学研究科, 教授 (00029216)

[文献書誌] 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)

[文献書誌] 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)

[文献書誌] 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)

[文献書誌] 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)