Amplitude dependence of the internal friction in a Pb-62% Sn alloy

被引：9
|
作者：
Arzhavitin, VM [1 ]
机构：
[1] Ctr Nat Sci, Kharkov Phys & Technol Inst, UA-61108 Kharkov, Ukraine
来源：
TECHNICAL PHYSICS | 2004年 / 49卷 / 06期
关键词：
D O I：
10.1134/1.1767878
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The method of forced flexural vibrations is used to obtain the amplitude dependence of the internal friction (Q(-1)(epsilon(0))) in the Pb-62% Sn alloy, which exhibits superplasticity at room temperature. A phenomenological model of the internal friction, in which the plasticity of alloys is considered as a hybrid relaxation-hysteresis process, is proposed. The numerical values of the cyclic-strain-hardening exponent n of the Pb-62% Sn alloy are determined in the microplastic and superplastic states, and the nature of the experimentally detected asymmetric maximum in Q(-1)(epsilon(0)) is discussed. (C) 2004 MAIK "Nauka/Interperiodica".
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页码：707 / 710
页数：4
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