Thermal and stress-induced martensitic transformations in quaternary Ni50Mn37(In, Sb)13 ferromagnetic shape memory alloys
Thermal and stress-induced martensitic transformations in quaternary Ni50Mn37(In, Sb)13 ferromagnetic shape memory alloys
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四元 Ni50Mn37(In, Sb)(13) 铁磁形状记忆合金中的热和应力诱导马氏体转变
DOI：
10.1016/j.intermet.2010.05.007
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发表时间：
2010-08-01
期刊：
影响因子：
4.4
通讯作者：
Wu, Guangheng
中科院分区：
文献类型：
--
作者：
Liu, Zhuhong;Wu, Zhigang;Wu, Guangheng
本研究对四元Ni50Mn37In13 - xSbx（x = 0、2、6、8、10）赫斯勒合金的马氏体相变和力学行为进行了研究。发现用Sb替代In可降低从L2(1)奥氏体转变的马氏体的正交畸变，但会增加相变体积变化。相变的临界温度随着因Sb替代In而导致的价电子浓度增加几乎呈线性下降，每原子百分比Sb的线性系数约为15 K。相变潜热和相变熵变随着Sb含量的增加而降低，在0 < x < 6和x > 6的浓度范围内呈现两种不同的成分依赖关系。这归因于马氏体的不同磁态。在多晶Ni50Mn37In3Sb10合金中获得了0.46%的可恢复相变应变。在Ni50Mn37In7Sb6样品中观察到了应力诱导马氏体稳定化效应。（C）2010爱思唯尔有限公司。保留所有权利。
This study investigated the martensitic transformation and the mechanical behaviour of quaternary Ni50Mn37In13-xSbx (x = 0, 2, 6, 8, 10) Heusler alloys. Substitution of Sb for In was found to reduce the orthorhombic distortion of the martensite form the L2(1) austenite, but increased the transformation volume change. The critical temperatures of the transformation are found to decrease nearly linearly with increasing valence electron concentration caused by Sb substitution for In, with a linearity coefficient of similar to 15 K per at% of Sb. The transformation latent heat and the transformation entropy change decreased with increasing Sb content, with two different composition dependencies in concentration ranges of 0 < x < 6 and x > 6. This is attributed to different magnetic states of the martensite. A recoverable transformation strain of 0.46% was obtained in the polycrystalline Ni50Mn37In3Sb10 alloy. An effect of stress-induced martensite stabilization was observed in the Ni50Mn37In7Sb6 sample. (C) 2010 Elsevier Ltd. All rights reserved.