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76 at%Niを含むNi3Ge単結晶の変形挙動

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Title: 76 at%Niを含むNi3Ge単結晶の変形挙動
Other Titles: Deformation Behaviour in Ni3Ge Single Crystals Containing 76 at%Ni
Authors: 三浦, 誠司1 Browse this author →KAKEN DB
小池, 基行2 Browse this author
王, 昆3 Browse this author
三島, 良直4 Browse this author
鈴木, 朝夫5 Browse this author
Authors(alt): Miura, Seiji1
Koike, Motoyuki2
Wang, Kung3
Mishima, Yoshinao4
Suzuki, Tomoo5
Keywords: Ni3Ge
mechanical property
single crystal orientation
Li2 ordered structure
Issue Date: 1-Oct-1992
Publisher: 日本金属学会
Journal Title: 日本金属学会誌
Journal Title(alt): Journal of the Japan Institute of Metals
Volume: 56
Issue: 10
Start Page: 1207
End Page: 1213
Publisher DOI: 10.2320/jinstmet1952.56.10_1207
Abstract: In order to make a comparison of the plastic behaviour between Ni3Al and Ni3Ge, where Al is a 3B and Ge a 4B-subgroup element, effects of temperature, orientation and strain-rate on the temperature dependence of strength are investigated in Ni3Ge single crystals with 76 at%Ni. It is found that at 77 K there is an appreciable orientation dependence in compressive 0.2% flow stress. For orientation near [\bar111], the onset of cube slip is found to occur at as low as ambient temperature which is unusual for the L12 single crystals. The thermal component of critical resolved shear stress for the cube slip vanishes also at a much lower temperature and the athermal component is found to exhibit a slight negative temperature dependence arising from the temperature dependence of shear modulus. For orientation near [001] and at the temperatures above the peak, the characteristic yield drop and the following steady-state deformation are found as in other L12 intermetallic compounds. The activation energy for the steady-state deformation is found to be 277 kJ/mol which is reasonably in good agreement with the value for the diffusion of Ge in Ni3Ge.
Type: article
Appears in Collections:工学院・工学研究院 (Graduate School of Engineering / Faculty of Engineering) > 雑誌発表論文等 (Peer-reviewed Journal Articles, etc)

Submitter: 三浦 誠司

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