Stereo configurations of the dislocations in the γ-phase in a Ti-48Al alloy compressed at 800°C

被引：0
|
作者：
Liang, W [1 ]
机构：
[1] Taiyuan Univ Technol, Ctr Testing & Measuring, Taiyuan 030024, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MATERIALS & PRODUCT TECHNOLOGY | 2001年
关键词：
TiAl-based alloy; high temperature deformation; dislocation; stereo microscopy;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The stereo configurations of the ordinary dislocations in the gamma-phase in a Ti-48Al alloy after deformation at 800degreesC were analyzed by developing an accurate method for the stereo analysis on structure features in TEM. It was found that the ordinary dislocations with b=(1/2)[110] always appear as three-dimensional curves which do not lie in single planes. The segments on these dislocations were found to lie either near (111) planes or near (112) planes. Based on the results obtained, the mechanism for the formation of helical ordinary dislocations was proposed.
引用
收藏
页码：664 / 669
页数：6
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