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10 at%Tiの添加によって単結晶化したNi3Siの変形挙動

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Title: 10 at%Tiの添加によって単結晶化したNi3Siの変形挙動
Other Titles: Deformation Behavior in Ni3Si Single-Crystalized by Addition of 10 at%Ti
Authors: 三浦, 誠司1 Browse this author →KAKEN DB
小池, 基行2 Browse this author
三島, 良直3 Browse this author
鈴木, 朝夫4 Browse this author
Authors(alt): Miura, Seiji1
Koike, Motoyuki2
Mishima, Yoshinao3
Suzuki, Tomoo4
Keywords: Ni3Si
plastic behavior
single crystal
nickel-silicon-titanium ternary alloy
activation energy
Issue Date: 1-Nov-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: 11
Start Page: 1343
End Page: 1351
Publisher DOI: 10.2320/jinstmet1952.56.11_1343
Abstract: The plastic behavior of Ni3(Si, Ti) single crystals with 10 at%Ti is investigated, and the effects of temperature, strain-rate and crystallographic orientation with respect to stress axis are examined. An appreciable orientation dependence of critical resolved shear stress (CRSS) is found at 77 K, where the CRSS increases as the orientation shifts from [001] toward [\bar111]. The apparent activation energy for the positive temperature dependence of strength, U, is evaluated to be 7.1 to 7.7 kJ/mol which is smaller than Ti free Ni3Si and is in good agreement with that expected from the data in polycrystals. For orientation near [001], where the octahedral viscous flow governs the steady-state deformation following characteristic yield drop, the stress exponent is found to be about 7 which is considerably higher than the values of 3.5-5 in other L12 compounds. The decrement in CRSS by the yield drop is unusually small as compared to the other L12 single crystals. The activation energy for the steady-state deformation is evaluated to be comparable to the value for diffusion of Si in Ni3Al. A good oxidation resistance of the alloy is also made clear in the present work.
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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