Vibration mitigation by the reversible fcc/hcp martensitic transformation during cyclic tension-compression loading of an Fe-Mn-Si-based shape memory alloy
Vibration mitigation by the reversible fcc/hcp martensitic transformation during cyclic tension-compression loading of an Fe-Mn-Si-based shape memory alloy
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DOI：
10.1016/j.scriptamat.2006.02.013
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发表时间：
2006-06-01
影响因子：
6
通讯作者：
Ogawa, T
中科院分区：
文献类型：
--
作者：
Sawaguchi, T;Sahu, P;Ogawa, T
通过低周疲劳试验，研究了Fe-28Mn-6Si-5Cr-0.5NbC（质量%）形状记忆合金在循环拉压载荷下的阻尼特性及其变形机理。比阻尼能力随应变幅值的增大而增大，在应变幅值0.4%以上接近80%处达到饱和；定量x射线衍射分析和原子力显微镜显微组织观察表明，大量拉伸应力诱导的epsilon马氏体在随后的压缩中反向转变为奥氏体；换句话说，应力诱导的“反向”马氏体转变发生在合金中。(c) 2006材料学报Elsevier Ltd.出版。版权所有。
The present work concerns the damping behavior of an Fe-28Mn-6Si-5Cr-0.5NbC (mass%) shape memory alloy determined by low cycle fatigue tests, and the corresponding deformation mechanism under cyclic tension-compression loading. The specific damping capacity increases with increasing strain amplitude and reaches saturation at similar to 80%, above the strain amplitude of 0.4%. Quantitative X-ray diffraction analyses and microstructural observations using atomic force microscopy revealed that a significant amount of the tensile stress-induced epsilon martensite is reversely transformed into the austenite by subsequent compression; in other words, the stress-induced, 'reverse' martensitic transformation takes place in the alloy. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.