Effect of the width on AZ31 sheet rolling

金属学报(英文版), 2010, 23(2): 154-160.

^1, , ^2, , ^3, , ^4, , ^5,

1.College of Materials Science and Engineering,Chongqing University,Chongqing,400044,China;National Engineering Research Center for Magnesium Alloys,Chongqing University,Chongqing 400044,China

2.College of Materials Science and Engineering,Chongqing University,Chongqing,400044,China;National Engineering Research Center for Magnesium Alloys,Chongqing University,Chongqing 400044,China

3.Chongqing University of Science and Technology,Chongqing 401331,China

4.College of Materials Science and Engineering,Chongqing University,Chongqing,400044,China;National Engineering Research Center for Magnesium Alloys,Chongqing University,Chongqing 400044,China

5.College of Materials Science and Engineering,Chongqing University,Chongqing,400044,China;National Engineering Research Center for Magnesium Alloys,Chongqing University,Chongqing 400044,China

基金项目: National Natural Science Foundation of China(50725413) 973 National Grand Theoretical Research Program(2007CB613700) Chongqing Sci & Technol Program(CSTC;2009AB4008) National Sci & Technal Support Program(2007BAG06B04)

Effect of the width on AZ31 sheet rolling

Qingwei DAI ^1, , Dingfei ZHANG ^2, , Wei LAN ^3, , Lin FANG ^4, , Junping ZHANG ^5,

1.College of Materials Science and Engineering,Chongqing University,Chongqing,400044,China;National Engineering Research Center for Magnesium Alloys,Chongqing University,Chongqing 400044,China

2.College of Materials Science and Engineering,Chongqing University,Chongqing,400044,China;National Engineering Research Center for Magnesium Alloys,Chongqing University,Chongqing 400044,China

3.Chongqing University of Science and Technology,Chongqing 401331,China

4.College of Materials Science and Engineering,Chongqing University,Chongqing,400044,China;National Engineering Research Center for Magnesium Alloys,Chongqing University,Chongqing 400044,China

5.College of Materials Science and Engineering,Chongqing University,Chongqing,400044,China;National Engineering Research Center for Magnesium Alloys,Chongqing University,Chongqing 400044,China

Keywords： Finite elements method

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 -0.008X2, 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.

参考文献

[1]	A. Styczynski;Ch. Hartig;J. Bohlen;D. Letzig .Cold rolling textures in AZ31 wrought magnesium alloy[J].Scripta materialia,2004(7):943-947.
[2]	Y.H. Ji;J.J. Park;W.J. Kim .Finite element analysis of severe deformation in Mg-3Al-lZn sheets through differential-speed rolling with a high speed ratio[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(0):570-574.
[3]	D. Canadinc;H. Sehitoglu;K. Verzal .Analysis of surface crack growth under rolling contact fatigue[J].International Journal of Fatigue,2008(9):1678-1689.

上一张下一张

上一张下一张

计量

下载量()
访问量()

作者相关

在本站搜索
在百度学术搜索
在万方数据库搜索
在CNKI搜索

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%