MICROSTRUCTURE AND TEXTURE EVOLUTION DURING ECAP PROCESSING OF PURE MAGNESIUM

被引：0
|
作者：
Seda, Petra [1 ]
Jaeger, Ales [1 ]
Lejcek, Pavel [1 ]
机构：
[1] Inst Phys AS CR, Prague 18221 8, Czech Republic
来源：
METAL 2010: 19TH INTERNATIONAL METALLURGICAL AND MATERIALS CONFERENCE | 2010年
关键词：
Magnesium; Equal channel angular pressing; Severe plastic deformation; Electron backscattered diffraction; DEFORMATION; CRYSTAL; ALLOY;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Equal channel angular pressing (ECAP) is a promising severe plastic deformation technique for grain refining in various bulk materials. In this paper, the magnesium (coarse grained polycrystals as well as single crystal) were subjected to ECAP at different temperatures. Microstructure and texture were investigated by light microscopy and scanning electron microscope equipped with electron backscattered diffraction camera (SEM?EBSD). The aim of the present work is to outline the microstructure and texture evolution of pure magnesium during severe plastic deformation by ECAP. A suitable temperature for ECAP processing is also discussed. Due to the relatively high processing temperatures (similar to 260 degrees C) and accumulation of plastic strain, recrystallization occurs during ECAP. Several twinning systems were active in deformed crystals. Texture observations show significant reorientation of the basal planes during ECAP processing.
引用
收藏
页码：172 / 175
页数：4
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