Microstructure characteristic and its effect on mechanical and shape memory properties in a Fe-17Mn-8Si-0.3C alloy

被引：7
作者：
Koyama, Motomichi [1 ]
Sawaguchi, Takahiro [1 ]
Tsuzaki, Kaneaki [1 ,2 ]
机构：
[1] Natl Inst Mat Sci, Tsukuba, Ibaraki 3050047, Japan
[2] Univ Tsukuba, Tsukuba, Ibaraki 3050047, Japan
来源：
JOURNAL OF ALLOYS AND COMPOUNDS | 2013年 / 573卷
基金：
日本学术振兴会;
关键词：
Shape memory; Microstructure; Phase transition; Metallography; Scanning electron microscopy (SEM); MN-SI ALLOYS; EPSILON-MARTENSITIC-TRANSFORMATION; STACKING-FAULT ENERGY; C ALLOYS; GAMMA; IRON;
D O I：
10.1016/j.jallcom.2013.03.289
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The influences of the Si content on the mechanical and shape memory properties of Fe-17Mn-xSi-0.3C alloys (wt.%) were examined, and a specific focus was placed on the properties of the Fe-17Mn-8Si-0.3C alloy. The 8%Si addition changed the initial microstructure from an austenite to an austenite/ferrite dual phase. A sufficient amount of deformation-induced e-martensite was observed despite the pre-existing ferrite. Mn and C were preferentially distributed to the austenite, while Si was localized in the ferrite. The formation of ferrite increased the yield strength and the shape recovery stress, and decreased the starting temperature for the shape recovery. (C) 2013 Elsevier B. V. All rights reserved.
引用
收藏
页码：15 / 19
页数：5
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