Dynamic recrystallization study of a Fe-Mn-Si based shape memory alloy in constant and variable thermomechanical conditions

被引：32
作者：
Zarnbrano, O. A. [1 ]
Loge, Roland E. [2 ]
机构：
[1] Univ Valle, Res Grp Tribol Polymers Powder Met & Proc Solid W, Cali, Colombia
[2] EPFL, Thermomech Met Lab, PX Grp Chair, CH-2002 Neuchatel, Switzerland
来源：
MATERIALS CHARACTERIZATION | 2019年 / 152卷
关键词：
Fe-Mn-Si steel; Thermo-mechanical treatment; Shape memory alloy; Hot deformation; Dynamic recrystallization; CHANGING STRAIN-RATE; HOT DEFORMATION; STAINLESS-STEEL; FLOW-STRESS; GRAIN-SIZE; MICROSTRUCTURE; INITIATION; EVOLUTION; BEHAVIOR; GAMMA;
D O I：
10.1016/j.matchar.2019.04.016
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The dynamic recrystallization of a Fe-Mn-Si based shape memory is studied for the first time, under constant and variable thermo-mechanical conditions. The effect of strain rate and deformation temperature on the microstructural evolution is investigated, considering that the grain size distribution can reduce or increase drastically the shape memory effect. The dynamic recrystallization behavior and the processability are analyzed from hot compression tests at both constant and variable strain rate and temperature, using a Gleeble 3800 machine. The microstructures were characterized by EBSD. The results showed that dynamic recrystallization and the resulting microstructure are strongly dependent of the thermomechanical path.
引用
收藏
页码：151 / 161
页数：11
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