1997 Fiscal Year Annual Research Report

非平衡材料超塑性

Research Project

Project/Area Number	08242107
Research Institution	Osaka University
Principal Investigator	馬越佑吉大阪大学, 工学部, 教授 (00029216)
Co-Investigator(Kenkyū-buntansha)	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)
Keywords	超塑性 / 非晶質 / 金属間化合物 / 転位 / 粒界 / メカニカルアロイング / 破壊 / 塑性
Research Abstract	(1)不安定微細分散相を含む金属間化合物の組織安定性と超塑性変形挙動、特に転位の振る舞いと組織安定性が関与した異常伸びの発現、(2)高速超塑性における粒界予融解ならびにキャビテーションの役割、(3)アモルファス合金の液体過冷却域での新しい超粘塑性挙動とこれを利用しての加工・成形技術の開発に関して、新たな進展が見られた。特筆すべき成果は次の通りである。 (a)TiAl単結晶中にはAl_5Ti_3ならびにAl_2Ti等の微細化合物相が存在する。Al_5Ti_3相を含有する場合は超塑性は発現しない。しかし、Al_2Tiが高温で微細に分散すると、この化合物の熱的・力学的安定性と転位運動の相互作用の結果として結晶粒界すべりを伴うことなく超塑性が発現する。 (b)高速超塑性において粒界近傍に存在する液相の形態が極めて重要であり、超塑性発現のためには数10nmオーダー以下の液相が必要とされる。 (c)Zr_<65>Al_<10>Ni_<10>Cu_<15>金属ガラスは過冷液体状態においてアモルファス相を保有しつつ複数形状への加工が可能である。この条件下で1nm/sに近い高速での加工が可能で、結晶化を抑制して1000mm級の加工材の作成が可能となった。また、押し出しの圧力とラム速度、変形温度との構成方程式を決定した。 (d)MA法で作成したAl基合金の変形において、高速超塑性が顕著な領域ではキャビティの発生が抑制される。このような条件下では、キャビティの寸法は数10nmと極めて小さく、このキャビテーションそれ自体が変形中の局所応力集中の緩和をもたらし、巨大伸びを生み出す。

Research Products
(50 results)

All Other

All Publications (50 results)

[Publications] Y.Umakoshi, et al.: "Superplasticity of HoSi/NbSi_2 Puplex Silicides" Mater.Sci.Forum. 233/234. 271-278 (1997)
[Publications] N.Furushiro et al.: "Dynamics in High Strain Rate Superplanticity" Mater.Sci.Forum. 233/234. 171-176 (1997)
[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)
[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)
[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)
[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)
[Publications] Y.Umakoshi et al.: "Grain Growth and Grain Orientation Distribution of Al Mg Alloys." Materials and Design. (in press). (1997)
[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)
[Publications] T.Hasegawa et al.: "Microstructural Study of High Strain Pate Supeuplosticity in Mechanically Alloyed Aluminum Alloys." Thermec'97. 2. 1961-1968 (1997)
[Publications] T.Yasuno et al.: "Stress-Strain Behavior and Contisuous Observation of Reformation in Superplastic MA Al Alloys" Thermec'97. (in press). (1997)
[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)
[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)
[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)
[Publications] M.Mabuchi et al.: "Row Tenperature Superplosticity in on A291Magnesium Alloy Processed by ECAE" Scripta Mater.36. 681-686 (1997)
[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)
[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)
[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)
[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)
[Publications] T.Mukai et al.: "Ductility Enhancementat Elevated Temperature in a ZKbo-Based Composite" Mater.Sci.Forum. 233/234. 261-268 (1997)
[Publications] K.Higashi et al.: "Racent Works in High Strain Rate Superplasticity" Mater.Sci.Forum. 233/234. 155-162 (1997)
[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)
[Publications] H.Iwasaki et al.: "Canitation in Superplostic Al-Mg Alloy" Mater.Sci.Forum. 233/234. 81-87 (1997)
[Publications] K.Higashi et al.: "Critical Aspects of High Strain Rate Superplasticity" Mater.Sci.Forum. 243/245. 267-276 (1997)
[Publications] H.Iwasaki et al.: "Conitation in High Strain Rate Superplastic Metal Matrix Composite" Mater.Sci.Forum. 243/245. 303-308 (1997)
[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)
[Publications] M.Mabuchi et al.: "Low Temperature Superplasticity of Magnesium Alloys Processed by FCAE." Mater.Sci.Forum. 243/245. 547-552 (1997)
[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)
[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)
[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)
[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)
[Publications] M.Mabuchi et al.: "Grain Size Control in Metal Matrix Composites" Proc.of Recrystallization and Ralated Phenomena. 611-618 (1997)
[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)
[Publications] T.Asahina et al.: "Mechanical Properties of Mg-Si Alloys" Proc.of 3rd Inter.Magnesium Conf.439-447 (1997)
[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)
[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)
[Publications] 東健司: "超塑性材料の最大伸び値" まてりあ. 36. 1131-1131 (1997)
[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)
[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)
[Publications] A.Inoue et al.: "High-Strain-Rate Superplasticity of Super cooled higuid for Anophous Alloys" Mater.Sci.Forum. 233/234. 147-154 (1997)
[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)
[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)
[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)
[Publications] Y.Kawamura et al.: "Fabrication of Bulk Amorphous Alloys by Powder Consolidation" J.Powder Metallwgy. 33. 50-61 (1997)
[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)
[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)
[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)
[Publications] Y.Kawamura et al.: "Rapidly Solidified Metallwgy Al-Ti-Fe Alloys" Scripta Metall.Matery. 37. 205-210 (1997)
[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)
[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)
[Publications] K.Aoki et al.: "Nenocrystalline TeAl Compacts Prepared by HDDR and Hot Pressing" Mat.Res.Soc.Symp.Proc.460. 153-158 (1997)

1997 Fiscal Year Annual Research Report

非平衡材料超塑性

Principal Investigator

馬越 佑吉 大阪大学, 工学部, 教授 (00029216)

Research Products

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

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

[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)

[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)

[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)

[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)

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

[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)

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

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

[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)

[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)

[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)

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

[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)

[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)

[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)

[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)

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

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

[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)

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

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

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

[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)

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

[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)

[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)

[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)

[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)

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

[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)

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

[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)

[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)

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

[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)

[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)

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

[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)

[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)

[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)

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

[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)

[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)

[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)

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

[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)

[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)

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

馬越佑吉大阪大学, 工学部, 教授 (00029216)