材料科学
无扩散变换
形状记忆合金
磁性形状记忆合金
大气温度范围
马氏体
拉伤
铁磁性
合金
凝聚态物理
应变工程
磁场
工作(物理)
冶金
热力学
微观结构
磁化
磁各向异性
医学
物理
量子力学
硅
内科学
作者
Qinhan Xia,Chaolin Tan,Binglun Han,Xiaohua Tian,Lei Zhao,Wenbin Zhao,Tianyou Ma,Cheng Wang,Kun Zhang
出处
期刊:Materials
[MDPI AG]
日期:2022-08-26
卷期号:15 (17): 5889-5889
被引量:2
摘要
Ni-Mn-Sn ferromagnetic shape memory alloys, which can be stimulated by an external magnetic field, exhibit a fast response and have aroused wide attention. However, the fixed and restricted working temperature range has become a challenge in practical application. Here, we introduced strain engineering, which is an effective strategy to dynamically tune the broad working temperature region of Ni-Co-Mn-Sn alloys. The influence of biaxial strain on the working temperature range of Ni-Co-Mn-Sn alloy was systematically investigated by the ab initio calculation. These calculation results show a wide working temperature range (200 K) in Ni14Co2Mn13Sn3 FSMAs can be achieved with a slight strain from 1.5% to −1.5%, and this wide working temperature range makes Ni14Co2Mn13Sn3 meet the application requirements for both low-temperature and high-temperature (151–356 K) simultaneously. Moreover, strain engineering is demonstrated to be an effective method of tuning martensitic transformation. The strain can enhance the stability of the Ni14Co2Mn13Sn3 martensitic phase. In addition, the effects of strain on the magnetic properties and the martensitic transformation are explained by the electronic structure in Ni14Co2Mn13Sn3 FSMAs.
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