Effect of the width on AZ31 sheet rolling

被引：4
作者：
Dai, Qingwei [1 ,2 ]
Zhang, Dingfei [1 ,2 ]
Lan, Wei [3 ]
Fang, Lin [1 ,2 ]
Zhang, Junping [1 ,2 ]
机构：
[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China
[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China
[3] Chongqing Univ Sci & Technol, Chongqing 401331, Peoples R China
来源：
ACTA METALLURGICA SINICA-ENGLISH LETTERS | 2010年 / 23卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Finite elements method; Magnesium alloys; Rolling; Pyramid sheet; Crack; MAGNESIUM ALLOY SHEETS; CONTACT FATIGUE; MECHANICAL-PROPERTIES; CRACK; MICROSTRUCTURE;
D O I：
10.11890/1006-7191-102-154
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
A pyramid sheet has been used in experiments and three-dimensional finite element simulation to study the edge cracks and effects of width on AZ31 sheet under rolling. Results show that the edge cracks of Mg sheet comply with the Normalized Crockroft & Latham theory. It can be predicted by D=-0.124+0.09X - 0.008X(2), if D >= 0, the edge cracks occur. The sheet shearing deformation at the edge brings about cracks. The strain rate changes periodically with different X. With initial width increases, the recrystallized grain size decreases. The finite element model has been validated by the experiment results.
引用
收藏
页码：154 / 160
页数：7
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