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首页> 外文期刊>Journal of Alloys and Compounds: An Interdisciplinary Journal of Materials Science and Solid-state Chemistry and Physics >Microstructure evolution of the undercooled Co-Ni-Ga magnetic shape memory alloy
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Microstructure evolution of the undercooled Co-Ni-Ga magnetic shape memory alloy

机译：过冷Co-Ni-Ga磁性形状记忆合金的组织演变

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摘要

Microstructure evolution of the martensite Co_(50)Ni_(22)Ga_(28) magnetic shape memory alloy was investigated by the method of glass fluxing combined with superheating cycling. A maximum bulk undercooling of 220 K is achieved and a mass of sub-grains are introduced by the undercooling. A number of dislocations and large internal stress, due to the undercooling rapid solidification, give rise to the production of sub-grains during the recovery process. These sub-grains, as well as martensite variants, are remarkably refined with the increase of undercooling. The recrystallization and growth of sub-grains during the following annealing are also discussed.
机译：采用玻璃熔剂与过热循环相结合的方法研究了马氏体Co_（50）Ni_（22）Ga_（28）磁性形状记忆合金的组织演变。达到最大的220 K的整体过冷度，并且过冷度会引入大量的亚晶粒。由于过冷的快速凝固，许多位错和较大的内部应力导致在回收过程中产生亚晶粒。随着过冷度的增加，这些亚晶粒以及马氏体变体得到了显着改善。还讨论了随后退火过程中亚晶粒的重结晶和生长。

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