期刊
SCRIPTA MATERIALIA
卷 65, 期 2, 页码 123-126出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2011.03.019
关键词
Shape memory alloys; Coefficient of thermal expansion; High-temperature recovery; Transformation induced plasticity; Creep
类别
资金
- NASA [NNX07AB56A]
- Div Of Industrial Innovation & Partnersh
- Directorate For Engineering [0832545] Funding Source: National Science Foundation
When Ni29.5Ti50.5Pd30 shape memory alloy is thermally cycled under stress, significant strain can accumulate due to elasticity, remnant oriented martensite and plasticity. The strain due to remnant martensite can be recovered by further thermal cycling under 0 MPa until the original transformation-induced volume change and martensite coefficient of thermal expansion are obtained. Using this technique, it was determined that the 8.15% total accumulated strain after cycling under 200 MPa consisted of 0.38%, 3.97% and 3.87% for elasticity, remnant oriented martensite and creep/plasticity, respectively. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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