Ambient effect on damping peak of NiTi shape memory alloy

被引：74

作者：

He, Yongjun ^{[1
]}

Yin, Hao ^{[1
]}

Zhou, Runhua ^{[1
]}

Sun, Qingping ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Mech Engn, Hong Kong, Hong Kong, Peoples R China

来源：

MATERIALS LETTERS | 2010年 / 64卷 / 13期

关键词：

Damping property; Rate dependence; Heat transfer; Martensitic transformation; Shape memory materials; TRANSFORMATION BEHAVIOR; HYSTERESIS; MARTENSITE; CAPACITY;

D O I：

10.1016/j.matlet.2010.03.068

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We report the effects of ambient condition and loading rate on the damping capacity of a superelastic nickel-titanium shape memory alloy during stress-induced martensitic phase transformation with release and absorption of latent heat The damping capacity was measured via a tensile loading-unloading cycle in the strain-rate range of 10(-5)-10(-1)/s and three ambient conditions still air and flowing air with velocities of 2 m/s and 17 m/s. It is found that. for each ambient condition. the maximum damping capacity (damping peak) is achieved at the strain rate whose loading time (t(gamma)) is close to the characteristic heat-transfer time (t(h)) of the ambient condition (C) 2010 Elsevier BV All rights reserved

引用

页码：1483 / 1486

页数：4

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