Interaction Potential between a Dislocation and a Pinning Atom in FCC Metals

被引：0

作者：

Kosugi, T. ^{[1
]}

Kogure, Y. ^{[1
]}

Nishino, Y. ^{[2
]}

Ide, N. ^{[2
]}

Nakamichi, I. ^{[3
]}

机构：

[1] Teikyo Univ Sci, 2525 Yatsusawa, Uenohara, Yamanashi 4090193, Japan

[2] Nagoya Inst Technol, Showa Ku, Nagoya, Aichi 4668555, Japan

[3] Hiroshima Univ, Cryogen Ctr, Higashihiroshima 7398526, Japan

来源：

INTERNAL FRICTION AND MECHANICAL SPECTROSCOPY | 2012年 / 184卷

关键词：

Dislocation-point defect Interaction; Interaction potential; Amplitude-dependent internal friction (ADIF); FCC Metals;

D O I：

10.4028/www.scientific.net/SSP.184.131

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Amplitude dependent internal friction (ADIF) was measured on 4N and 6N Cu crystals at 4K-40 K to study the interaction between a dislocation and a pinning atom. The temperature dependence of the stress amplitude necessary to produce a constant ADIF was well explained by assuming the Cottrell type interaction potential based on linear elasticity. This is clearly different from the case of Al crystals where it was necessary to consider a modified Cottrell potential including a deviation from linear elasticity near the dislocation center.

引用

页码：131 / +

页数：2

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