Effect of heating/cooling rate on martensitic transformation of NiMnGa-Co high temperature ferromagnetic shape memory alloys
Effect of heating/cooling rate on martensitic transformation of NiMnGa-Co high temperature ferromagnetic shape memory alloys
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DOI：
10.1016/j.jallcom.2016.08.143
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发表时间：
2017-01
影响因子：
6.2
通讯作者：
A. Nespoli;C. Biffi;E. Villa;A. Tuissi
中科院分区：
文献类型：
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作者：
A. Nespoli;C. Biffi;E. Villa;A. Tuissi
对Ni56Mn(25-x)Ga19Cox(x=0，2，4at.%)铁磁形状记忆合金进行了完全退火热处理，然后按不同的热路径制备。研究发现，淬火过程和较高的升温速率共同改善了Co掺杂样品的热响应，稳定了热弹性转变；此外，观察到低速率的热循环相当于奥氏体热老化。
Ni56Mn(25-x)Ga19Cox(x = 0, 2, 4 at.%) ferromagnetic shape memory alloys were fully annealed and then prepared according to different thermal routes. It was found that a quench process, together with a high heating rate, improves the thermal response and stabilizes the thermo-elastic transformation in Co-doped samples; in addition, it was observed that a low-rate thermal cycling is comparable to an austenitic aging.