Relation between martensite morphology and volume change accompanying fcc to bcc martensitic transformation in Fe–Ni–Co alloys
Relation between martensite morphology and volume change accompanying fcc to bcc martensitic transformation in Fe–Ni–Co alloys
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DOI：
10.1016/j.msea.2005.12.044
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发表时间：
2006-11
期刊：
影响因子：
6.4
通讯作者：
A. Shibata;H. Yonezawa;K. Yabuuchi;S. Morito;T. Furuhara;T. Maki
中科院分区：
文献类型：
--
作者：
A. Shibata;H. Yonezawa;K. Yabuuchi;S. Morito;T. Furuhara;T. Maki
使用各种 Fe-Ni-Co 合金研究了伴随奥氏体 (fcc) 向马氏体 (bcc) 转变的 α′ 马氏体形态和亚结构的变化以及体积变化。在 Fe-Ni 二元合金中添加 Co 后，奥氏体因瓦效应降低了伴随马氏体转变的体积变化。在 Fe-28Ni-20Co 和 Fe-24Ni-30Co（质量％）合金中，出现了较小的负体积变化（分别为 -0.30％ 和 -0.39％）。随着体积变化的减小，马氏体形态从透镜状到板条状的转变温度升高。随着体积变化接近零，马氏体和奥氏体中的位错密度降低。
The change in morphology and substructure of α′ martensite with a volume change accompanying austenite (fcc) to martensite (bcc) transformation was studied using various Fe–Ni–Co alloys. The volume change accompanying martensitic transformation was decreased by the Invar effect of austenite with Co addition to the Fe–Ni binary alloys. In Fe–28Ni–20Co and Fe–24Ni–30Co (mass%) alloys, small and negative volume changes were established (−0.30% and −0.39%, respectively). With a decrease in volume change, the transition temperature of martensite morphology from lenticular to lath increases. The dislocation densities in martensite and austenite decrease as the volume change approaches zero.