Temperature Dependence of Pseudoelasticity and Shape Memory Effect in Fe_3Ga Single Crystals with D0_3 Structure
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概要
- 論文の詳細を見る
Pseudoelastic behavior and shape memory effect in D03-ordered Fe–24.4at%Ga single crystals deformed at different temperatures were investigated focusing on the microstructure and dislocation configuration. High strain recovery ratios more than 80% could be obtained at temperatures between −100 and 100°C. In particular, perfect pseudoelasticity appeared in the crystals deformed at room temperature. During unloading, antiphase boundaries (APB) left behind 1/4‹111› superpartial dislocations pulled back the superpartials resulting in the pseudoelasticity. In addition, Fe3Ga single crystals compressed at −150°C demonstrated shape memory effect during heating to room temperature. On the other hand, the recovery ratio decreased with increasing deformation temperature up to 300°C and remained constant at about 10%. The L12 phase precipitating during deformation, dislocation configuration associated with 1/4‹111› superpartials connected by two kinds of APB and relaxation of the APB were found to strongly influence the pseudoelasticity and shape memory effect in Fe3Ga single crystals.
- 社団法人 日本鉄鋼協会の論文
- 2008-07-15
著者
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馬越 佑吉
大阪大学
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Umakoshi Yukichi
大阪大学 医学系研究科器官制御外科学
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Umakoshi Y
Division Of Materials & Manufacturing Science Graduate School Of Engineering Osaka University
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Umakoshi Yukichi
Division Of Materials And Manufacturing Science Graduate School Of Engineering Osaka University
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Umakoshi Yukichi
Osaka Univ. Suita Jpn
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Umakoshi Yukichi
Department Of Materials Science And Engineering & Frontier Research Center Graduate School Of En
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Aoki Mitsuhiro
Division Of Materials And Manufacturing Science Graduate School Of Engineering Osaka University
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YASUDA Hiroyuki
Research Center for Ultra-High Voltage Electron Microscopy, Osaka University
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Yasuda Hiroyuki
Research Center For Ultra-high Voltage Electron Microscopy Osaka University
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Yasuda Hiroyuki
Div. Of Materials And Manufacturing Sci. Graduate School Of Engineering Osaka Univ.
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FUKUSHIMA Kouki
Division of Materials and Manufacturing Science, Graduate School of Engineering, Osaka University
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Fukushima Kouki
Division Of Materials And Manufacturing Science Graduate School Of Engineering Osaka University
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FUKUSHIMA Kouki
Research Center for Ultra-High Voltage Electron Microscopy, Osaka University
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AOKI Mitsuhiro
Research Center for Ultra-High Voltage Electron Microscopy, Osaka University
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UMAKOSHI Yukichi
Research Center for Ultra-High Voltage Electron Microscopy, Osaka University
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Aoki Mitsuhiro
Research Center For Ultra-high Voltage Electron Microscopy Osaka University
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