1994 年度実績報告書

金属間化合物の変形と破壊のメカニズム

研究課題

研究課題/領域番号	04239105
研究機関	京都大学
研究代表者	山口正治京都大学, 工学部, 教授 (90029108)
研究分担者	森博太郎大阪大学, 超高圧電顕センター, 助教授 (10024366) 馬越佑吉大阪大学, 工学部, 教授 (00029216) 菊池実東京工大, 工学部, 教授 (30089817) 及川洪東北大学, 工学部, 教授 (30005243) 竹内伸東京大学, 物性研究所・所長, 教授 (60013512)
キーワード	金属間化合物 / アルミナイド / シリサイド / 格子欠陥 / 変形 / すべり系 / 破壊
研究概要	本研究は,平成4年度に発足した重点領域研究「金属間化合物」の「変形とと破壊のメカニズム(A02)計画研究班」の第3年度の研究として実施した。新しい高温構造材料の開発を目標に、軽量のTi-Al系、高融点のTi-Si系、Mo-Si系、Nb-Si系、Nb-Al系金属間化合物に関する研究を進めたが、特に、Ti-Al系化合物、なかでもTi_3Al相と平衡するTiAl相について、注目すべき実験的成果が得られた。特に、単一のラメラ方位を持つTiAl/Ti_3Al 2相組織の結晶(PST結晶)が育成された結果、TiAl相、Ti_3Al相それぞれの力学特性が明らかになったことは注目に値する。しかも、Ti合金の重要な合金元素であるいくつかの遷移金属元素を含むTi-Al-X三元素状態図が明らかにされ、TiAl相、Ti_3Al相に関する結晶組成上の新知見と併せて、TiAl/Ti_3Al 2相組織を持つ新しい金属間化合物ベースの合金を開発するための基礎がほぼ固まった。このPST結晶を用いたTiAl/Ti_3Al 2相合金の研究を中心としてTiAlに関する本計画研究班の研究成果は国際的にも注目されており、TiAl基合金あるいはTiAl基合金に関わるプロセス(たとえば一方向性凝固プロセス)の開発への応用が検討されている。さらに,Nb,Mo等高融点金属のシリサイド、アルミナイドの脆性の本質と脆性→延性遷移に対する研究を押し進め、その結果、モリブデンシリサイドの変形機構、変形モードと変形挙動の異方性ならびにそれらと破壊挙動との関わりについて多くの新知見が得られた。

研究成果
(30件)

すべてその他

すべて文献書誌 (30件)

[文献書誌] M. Yamahuchi: "Environmental Embrittlement of PST TiAl" Trans. Mater. Res. Soc. Japan. 13B. 61-73 (1994)
[文献書誌] H. Inui: "Deformation of Ti-36.5 at.% Al" Philosophical Magazine A 1994. 69. 1161-1177 (1994)
[文献書誌] M. Yamaguchi: "Mechanical Properties of TiAl" J. Mater. Sci. Technol.10. (1994)
[文献書誌] K. Ito: "Plastic Deformation of CoSi_2" Acta metall. mater.42. 1261-1271 (1994)
[文献書誌] J. Kawai: "Chemical Effects on Ti X-ray Fluorescene Spectra" Analyst. 119. 601-603 (1994)
[文献書誌] Y. Shirai: "Vancacies in Al_<67>Mn_8Ti_<25>" Intermetallics. 2. 221-224 (1994)
[文献書誌] M. Yamaguchi: "Twinning in Intermetallic Compounds" Twinning in Advanced materials,TMS,1994. 177-190 (1994)
[文献書誌] K. Suzuki: "HRTEM of Extended Defects in Wurtzite" Jpn.J.Appl.Phys.33. 1114-1120 (1994)
[文献書誌] S Takeuchi: "Plastic Deformation of Single Crystals of TiSi_2" Intermetallics. 2. 289-296 (1994)
[文献書誌] Y. Ishikawa: "Dynamic Recrystallization Regions in the Creep of Ti-53Al" Strength of Materials,ed. by H.Oikawa et al.733-736 (1994)
[文献書誌] Y. Yamabe: "Determination of Transition Temperatures in Ti-(40-45)at% Al" Scr. Metall. Mater.30. 553-557 (1994)
[文献書誌] N. Tada: "Inverse Analysis of Distribution of Internal Smaal Defects" JSME International Journal. Ser.A 37. 450-455 (1994)
[文献書誌] T. Kitamura: "Stochastic Simulation of Small Cracks in Creep-Fatigue" IUTAM Symposium on Probabilistic Structural Mechanics. 301-318 (1994)
[文献書誌] T. Nakano: "Effects of B Addition on the Plastic Behaviour of TiAl PST Crystals" Intermetallics. 2. 185-194 (1994)
[文献書誌] Y. Umakoshi: "The Fatigue Behaviour of TiAl PST Crystals" Porc.10th Inter.Conf. on Strength of Materials. 1. 345-348 (1994)
[文献書誌] Y. Umakoshi: "Effect of Lamellar Structure on Oxidation Behaviour of TiAl" Ceramics, Powders, Corrosion and Advanced Processing. 1. 229-232 (1994)
[文献書誌] Y. Umakoshi: "High Temperature Deformation of Ti_5Si_3 Single Crystals" Scripta metall mater.30. 1431-1436 (1994)
[文献書誌] Y. Umakoshi: "Plastic Behavior and Deformation Structure Silicide Single Crystals" Mat. Res. Soc. Sympo.322. 9-20 (1994)
[文献書誌] H.Y. Yasuda: "Cyclic Deformation Behaviour of TiAl Alloys" Phil. Mag. A. 71. 127-138 (1995)
[文献書誌] H. Mori: "Effect of MeV Electron Irradiation on Gold Atom Implantation into Silicon" J. Vacuum Science and Technology B. 12. 2376-2379 (1994)
[文献書誌] M. Komatsu: "Design of a Hot Tensile Stage for an Ultra-High Voltage Electron Microscope" J. American CEram. Soc.76. 839-842 (1994)
[文献書誌] H. Yasuda: "Structure of Nm-Sized InSb Clusters Formed by Spontaneous Alloying" Zeotscjroft fir Physik, D. 31. 209-212 (1994)
[文献書誌] H. Mori: "HREM Study on Crystallization of Gold-Implanted Amorphous SiC" Nucl. Instr. Methods in Phys. Res.,B. 94. 73-80 (1994)
[文献書誌] K. Masuda-Jindo: "Simulation Study on the Structure and Strength of GB" Trans. Mat. Res. Soc. Jpn.16B. 1345-1348 (1994)
[文献書誌] K. Masuda-Jindo: "Dislocation Nucleation Process at Crack Tip" Trans. Mat. Res. Soc. Jpn.16B. 397-400 (1994)
[文献書誌] T. Shinoda: "Design of Ni-Al Base High Temperature Alloys" Trans. Mat. Res. Soc. Jpn. 16B. 213-216 (1994)
[文献書誌] K. Masuda-Jindo: "Dislocations and Grain Boundaries in Semiconductors" Trans. Mat. Res. Soc. Jpn.16B. 349-354 (1994)
[文献書誌] K. Masuda-Jindo: "Interaction of Grain Boundaries,Dislocations and Impurity Atoms in Semiconductors" Solid State Phenomena. 37-38. 125-130 (1994)
[文献書誌] M.Yamaguchi: "Intermatallic Compounds" J.H.Westbrook and R.L.Fleischer ed.Wiley, 147-174 (1995)
[文献書誌] M.Yamaguchi: "Physical Metallurgy and Processing of Intermetallic Coumpounds" N.S.Stoloff and V.K.Sikka ed. Chapman & Hall (in press),

1994 年度 実績報告書

金属間化合物の変形と破壊のメカニズム

研究代表者

山口 正治 京都大学, 工学部, 教授 (90029108)

研究成果

[文献書誌] M. Yamahuchi: "Environmental Embrittlement of PST TiAl" Trans. Mater. Res. Soc. Japan. 13B. 61-73 (1994)

[文献書誌] H. Inui: "Deformation of Ti-36.5 at.% Al" Philosophical Magazine A 1994. 69. 1161-1177 (1994)

[文献書誌] M. Yamaguchi: "Mechanical Properties of TiAl" J. Mater. Sci. Technol.10. (1994)

[文献書誌] K. Ito: "Plastic Deformation of CoSi_2" Acta metall. mater.42. 1261-1271 (1994)

[文献書誌] J. Kawai: "Chemical Effects on Ti X-ray Fluorescene Spectra" Analyst. 119. 601-603 (1994)

[文献書誌] Y. Shirai: "Vancacies in Al_<67>Mn_8Ti_<25>" Intermetallics. 2. 221-224 (1994)

[文献書誌] M. Yamaguchi: "Twinning in Intermetallic Compounds" Twinning in Advanced materials,TMS,1994. 177-190 (1994)

[文献書誌] K. Suzuki: "HRTEM of Extended Defects in Wurtzite" Jpn.J.Appl.Phys.33. 1114-1120 (1994)

[文献書誌] S Takeuchi: "Plastic Deformation of Single Crystals of TiSi_2" Intermetallics. 2. 289-296 (1994)

[文献書誌] Y. Ishikawa: "Dynamic Recrystallization Regions in the Creep of Ti-53Al" Strength of Materials,ed. by H.Oikawa et al.733-736 (1994)

[文献書誌] Y. Yamabe: "Determination of Transition Temperatures in Ti-(40-45)at% Al" Scr. Metall. Mater.30. 553-557 (1994)

[文献書誌] N. Tada: "Inverse Analysis of Distribution of Internal Smaal Defects" JSME International Journal. Ser.A 37. 450-455 (1994)

[文献書誌] T. Kitamura: "Stochastic Simulation of Small Cracks in Creep-Fatigue" IUTAM Symposium on Probabilistic Structural Mechanics. 301-318 (1994)

[文献書誌] T. Nakano: "Effects of B Addition on the Plastic Behaviour of TiAl PST Crystals" Intermetallics. 2. 185-194 (1994)

[文献書誌] Y. Umakoshi: "The Fatigue Behaviour of TiAl PST Crystals" Porc.10th Inter.Conf. on Strength of Materials. 1. 345-348 (1994)

[文献書誌] Y. Umakoshi: "Effect of Lamellar Structure on Oxidation Behaviour of TiAl" Ceramics, Powders, Corrosion and Advanced Processing. 1. 229-232 (1994)

[文献書誌] Y. Umakoshi: "High Temperature Deformation of Ti_5Si_3 Single Crystals" Scripta metall mater.30. 1431-1436 (1994)

[文献書誌] Y. Umakoshi: "Plastic Behavior and Deformation Structure Silicide Single Crystals" Mat. Res. Soc. Sympo.322. 9-20 (1994)

[文献書誌] H.Y. Yasuda: "Cyclic Deformation Behaviour of TiAl Alloys" Phil. Mag. A. 71. 127-138 (1995)

[文献書誌] H. Mori: "Effect of MeV Electron Irradiation on Gold Atom Implantation into Silicon" J. Vacuum Science and Technology B. 12. 2376-2379 (1994)

[文献書誌] M. Komatsu: "Design of a Hot Tensile Stage for an Ultra-High Voltage Electron Microscope" J. American CEram. Soc.76. 839-842 (1994)

[文献書誌] H. Yasuda: "Structure of Nm-Sized InSb Clusters Formed by Spontaneous Alloying" Zeotscjroft fir Physik, D. 31. 209-212 (1994)

[文献書誌] H. Mori: "HREM Study on Crystallization of Gold-Implanted Amorphous SiC" Nucl. Instr. Methods in Phys. Res.,B. 94. 73-80 (1994)

[文献書誌] K. Masuda-Jindo: "Simulation Study on the Structure and Strength of GB" Trans. Mat. Res. Soc. Jpn.16B. 1345-1348 (1994)

[文献書誌] K. Masuda-Jindo: "Dislocation Nucleation Process at Crack Tip" Trans. Mat. Res. Soc. Jpn.16B. 397-400 (1994)

[文献書誌] T. Shinoda: "Design of Ni-Al Base High Temperature Alloys" Trans. Mat. Res. Soc. Jpn. 16B. 213-216 (1994)

[文献書誌] K. Masuda-Jindo: "Dislocations and Grain Boundaries in Semiconductors" Trans. Mat. Res. Soc. Jpn.16B. 349-354 (1994)

[文献書誌] K. Masuda-Jindo: "Interaction of Grain Boundaries,Dislocations and Impurity Atoms in Semiconductors" Solid State Phenomena. 37-38. 125-130 (1994)

[文献書誌] M.Yamaguchi: "Intermatallic Compounds" J.H.Westbrook and R.L.Fleischer ed.Wiley, 147-174 (1995)

[文献書誌] M.Yamaguchi: "Physical Metallurgy and Processing of Intermetallic Coumpounds" N.S.Stoloff and V.K.Sikka ed. Chapman & Hall (in press),

1994 年度実績報告書

山口正治京都大学, 工学部, 教授 (90029108)