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Acta Metall Sin  2011, Vol. 47 Issue (2): 140-144    DOI: 10.3724/SP.J.1037.2010.00523
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EFFECT OF ORIGINAL ORIENTATION ON MICROTEXTURE EVOLUTION OF AZ31 Mg ALLOY
WU Xinxing1), YANG Xuyue1, 2), ZHANG Lei1), ZHANG Zhiling1)
1) School of Materials Science and Engineering, Central South University, Changsha 410083
2) Key Laboratory of Nonferrous Metal Materials Science and Engineering, Ministry of Education, Central South University, Changsha 410083
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Abstract  The deformation behavior of AZ31 Mg alloy was studied in the temperature range from 523 to 723 K under a strain rate of 3×10-3 s-1. Cuboid samples with different orientations were machined from an extruded rod along angles of 0o, 45o and 90o to the extrusion direction, respectively. The effects of original orientation on microtexture evolution were analysed by OM and SEM/EBSD techniques. The results showed that the true stress-true strain curves were sensitive to original orientation especially below 623 K. Extensive {1012} tension twins were formed at 523 K in the 0o samples and the volume fraction of twins increased rapidly to 90\% at a strain of ε=0.3. Namely, the basal planes initially parallel to the compression axis rotated quickly by twinning to an orientation perpendicular to the compression axis. In contrast, the volume fraction of {1012} twinning in the 45o or 90o samples was lower than 10%. The initial texture in the 90o sample scarcely changes and the relative intensity decreased with increasing strain.
Key words:  Mg alloy      original orientation      tension twinning      microtexture evolution     
Received:  07 October 2010     
Fund: 

Supported by National Natural Science Foundation of China (No.51071182)

Corresponding Authors:  YANG Xuyue     E-mail:  yangxuyue@mail.csu.edu.cn

Cite this article: 

WU Xinxing YANG Xuyue ZHANG Lei ZHANG Zhiling. EFFECT OF ORIGINAL ORIENTATION ON MICROTEXTURE EVOLUTION OF AZ31 Mg ALLOY. Acta Metall Sin, 2011, 47(2): 140-144.

URL: 

https://www.ams.org.cn/EN/10.3724/SP.J.1037.2010.00523     OR     https://www.ams.org.cn/EN/Y2011/V47/I2/140

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