Hot deformation to high strains; Microstructure, texture and flow stress behaviour

被引:0
|
作者
Pettersen, T [1 ]
Nes, E [1 ]
机构
[1] Norwegian Univ Sci & Technol, Dept Mat Technol & Electrochem, NO-7034 Trondheim, Norway
来源
ALUMINIUM ALLOYS: THEIR PHYSICAL AND MECHANICAL PROPERTIES, PTS 1-3 | 2000年 / 331-3卷
关键词
hot deformation; large strain deformation; texture development; torsion;
D O I
10.4028/www.scientific.net/MSF.331-337.601
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
An investigation of the development of the stress-strain curve during deformation in torsion has been carried out. A fall in the flow stress of about 20% was found from the peak of the stress-strain curve to a second steady state. To investigate the origin of the fall in the flow stress the change in texture and microstructure during deformation was followed. The texture was found to change from a close to random texture at the peak of the stress-strain curve to a texture mainly consisting of the components {001}< 110 > and {112}< 110 > at the second steady state strain. A fall in the stress of 5%-7% could hence be ascribed to the change in texture. The subgrain size was found to increase by about 20% corresponding to a fall in the flow stress of 10%.
引用
收藏
页码:601 / 606
页数:6
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