Simultaneous improvement of magnetic-field-induced working temperature and mechanical properties in Ni–Mn–In shape memory alloy
Simultaneous improvement of magnetic-field-induced working temperature and mechanical properties in Ni–Mn–In shape memory alloy
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同时提高Ni-Mn-In形状记忆合金的磁场诱导工作温度和力学性能
DOI：
10.1063/5.0092428
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发表时间：
2022-06
期刊：
影响因子：
1.6
通讯作者：
Changlong Tan
中科院分区：
文献类型：
--
作者：
Tianyou Ma;Kun Zhang;Binglun Han;Lei Zhao;Wenbin Zhao;Cheng Wang;Rui Liu;Xiaohua Tian;Changlong Tan
Ni-Mn-In磁性形状记忆合金由于其能在外加磁场激励下快速响应，在机电驱动器领域引起了广泛的关注。然而，低的工作温度和固有的脆性严重限制了它们的应用场景。本文提出了一种提高Ni-Mn-In形状记忆合金磁感应工作温度和力学性能的有效方法。通过第一性原理研究，我们预测Pt掺杂的Ni 16 Mn 12 In 4合金可以同时解决上述问题.计算结果表明，Pt占据Ni位可同时提高马氏体温度（TM）和居里温度（TC）。Ni 14 Mn 12 In 4Pt 2的T_M和T_C分别高达440和476 K。这主要是由于Pt掺杂后马氏体的相稳定性增加以及Pt-Mn键比Ni-Mn键具有更强的铁磁交换效应。而且，根据Pt掺杂后B/G和v的增加，可以得出合金的力学性能得到了提高。
Ni–Mn–In magnetic shape memory alloys, which can be stimulated by an external magnetic field, exhibit a fast response and have aroused wide attention in the field of electro-mechanical actuators. However, the low working temperature and the inherent brittleness severely limit their application scenarios. Here, an effective strategy is proposed to improve the magnetic-field-induced working temperature and mechanical properties in Ni–Mn–In shape memory alloys. We predict that the Ni 16 Mn 12 In 4 alloy with Pt doping can solve the problems simultaneously through a comprehensive first-principles study. The calculations show that Pt occupying Ni sites can increase the martensitic temperature ( T M ) and Curie temperature ( T C ) simultaneously. T M and T C of Ni 14 Mn 12 In 4 Pt 2 are predicted to be as high as 440 and 476 K, respectively. This is mainly due to the increased phase stability of the martensite and Pt–Mn bonds having stronger ferromagnetic exchange effects than Ni–Mn bonds after Pt doping. Moreover, according to the increase of B/G and v after Pt doping, it can be concluded that the mechanical properties of the alloy have been improved.
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影响因子：
3.7
作者：
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通讯作者：
V. Sharma;M. Chattopadhyay;A. Khandelwal;Subhadeep Roy
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影响因子：
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影响因子：
9.4
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通讯作者：
Eggeler, G.