Investigation on martensitic transformation behavior, microstructures and mechanical properties of Fe-doped Ni-Mn-In alloys

被引：47
作者：
Feng, Y. [1 ]
Sui, J. H. [1 ]
Gao, Z. Y. [1 ]
Zhang, J. [1 ]
Cai, W. [1 ]
机构：
[1] Harbin Inst Technol, Sch Mat Sci & Engn, Harbin 150001, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2009年 / 507卷 / 1-2期
关键词：
Intermetallics; Phase transformation; Microstructure; Precipitates; Brittleness and ductility; SHAPE-MEMORY ALLOYS; FIELD-INDUCED STRAIN; MAGNETIC-PROPERTIES; GA; PHASE;
D O I：
10.1016/j.msea.2008.12.003
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Ni-Mn-In alloys are doped by Fe in order to improve the ductility of this intermetallic. The phase transformation behavior, microstructures and mechanical properties of Ni50Mn34In16-yFey (y=0, 2, 3, 4, 5, 8) alloys are investigated in this paper. The phase transformation temperatures increase with the increase of Fe content, and some second phase particles appear both along the grain boundaries and inside the grains after being doped 5 at.% and 8 at.% Fe. The compressive strength and maximum compressive strain reach up to 1200 MPa and 15.8% for amounts higher than 8 at.% Fe. In addition, the fracture type changes from typical intergranular crack to transgranular crack gradually with the increase of Fe content. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：174 / 178
页数：5
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