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J. Jpn Inst. Metal 56(10) 1200.pdf980.14 kBPDFView/Open
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Title: IVB亜族元素Siを添加したNi3Al単結晶の変形挙動
Other Titles: Deformation Behaviour in Ni3Al Single Crystals Containing IVB-Subgroup Element Si
Authors: 三浦, 誠司1 Browse this author →KAKEN DB
三島, 良直2 Browse this author
鈴木, 朝夫3 Browse this author
Authors(alt): Miura, Seiji1
Mishima, Yoshinao2
Suzuki, Tomoo3
Keywords: Ni3Al
single crystal
plastic behaviour
nickel-aluminum-silicon ternary alloy
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: 1200
End Page: 1206
Publisher DOI: 10.2320/jinstmet1952.56.10_1200
Abstract: The temperature, strain-rate and orientation dependences of strength are investigated in single crystalline Ni3(Al, 5.0Si), and the results are compared with those on Ni3(Al, 2.5Si) single crystals reported previously by the present authors. The magnitude of the anomalous positive temperature dependence of strength is found to increase with increasing Si additions and the value of activation energy to yield the mechanical anomaly is found to be in good accordance with that being predicted from the data for polycrystals. For an orientation near [\bar111], where the cube slip governs the plastic behaviour above the peak temperature, the temperature and strain-rate dependences of strength are found to differ considerably from what was found in Ni3(Al, 2.5Si). This is shown to be caused by the difference in the deviation from stoichiometry and not by the difference in Si content of the alloys. On the other hand, the steady-state deformation behaviour being governed by the octahedral viscous flow for the orientation near [001] resembles that in Ni3(Al, 2.5Si), where the stress exponent as well as the activation energy for the deformation is found to be nearly identical. The activation energy evaluated is of the same order as that for diffusion of Si in Ni3Al.
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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