In situ phase transformation of Laves phase from Chi-phase in Mo-containing Fe-Cr-Ni alloys

被引：20
|
作者：
Tan, L. [1 ]
Yang, Y. [1 ]
机构：
[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
来源：
MATERIALS LETTERS | 2015年 / 158卷
关键词：
Mo-containing stainless steels; TEM; Microstructure; Phase transformation; SIGMA-PHASE; PRECIPITATION; STEEL;
D O I：
10.1016/j.matlet.2015.06.018
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
An in situ phase transformation of the Chi (chi) phase to the Laves phase was observed in a Fe-Cr-Ni-Mo model alloy. The morphology, composition, and crystal structure of the chi and Laves phases, and their orientation relationship with the matrix austenite phase were investigated. The resulted Laves phase has larger lattice mismatch with the matrix phase than the chi phase, leading to the increase of local strain fields and the formation of dislocations. This finding is helpful to understand the precipitation behavior of the intermetallic phases in the Mo-containing austenitic stainless steels. (C) 2015 Elsevier B.V. All rights reserved.
引用
收藏
页码：233 / 236
页数：4
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