Damping behavior of Ti50.1Ni49.9 alloy in reverse martensitic transformation region

被引：5
作者：
Zeng JianMin [1 ]
Jiang HaiChang [1 ]
Liu ShuWei [1 ]
Rong LiJian [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China
来源：
SCIENCE CHINA-TECHNOLOGICAL SCIENCES | 2012年 / 55卷 / 02期
基金：
中国国家自然科学基金;
关键词：
internal friction; attenuation; strain amplitude; martensitic transformation; shape memory alloys; MEMORY; CAPACITY; CU; TI;
D O I：
10.1007/s11431-011-4686-4
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Damping behavior of Ti50.1Ni49.9 shape memory alloy during reverse martensitic transformation has been investigated by dynamic mechanical analyzer in a dual-cantilever mode. With the increase of strain amplitude, internal friction (IF) of the alloy increases in martensite and austenite states while decreases in transformation region. Based on the regularity of IF attenuation in isothermal condition, IFTr and (IFPT+ IFI) are decomposed from the strain amplitude dependent IF in transformation region. For practical application of shape memory alloys as a damping material, it is significant to evaluate the damping capacity by eliminating the influence of IFTr and consider its time independent real IF (IFPT+ IFI).
引用
收藏
页码：470 / 474
页数：5
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