2007, Vol. 43

Issue (6): 619-624 DOI:

Research Articles

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. . Acta Metall Sin, 2007, 43(6): 619-624 .

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Abstract In this paper the grain orientation of as-cast AZ80 magnesium alloy during multiple forging process was studied. The results show that preferred orientation during plastic flow mostly result from grain rotation and orientation shift. In the case of very small deformation without any initiation of new grains, slipping and twinning resulting in grain rotation may lead to the formation of relatively strong basal preferred orientation. Basal preferred orientation changes with the applied loading axis rotation and is aligned parallel to the compression direction during the first 9 passes except the 4th one. After 10 passes of multiple forging processing, the final orientation distribution is close to random. Forging temperature and deformation mode have an important influence on the evolution of grain orientation while pass strain does not. Both decreasing deformation temperature in some degree and multi-directional deformation mode can promote the formation of strong basal orientation.

Key words: magnesium alloy multiple forging grain orientation

Received: 23 October 2006

ZTFLH:

TG319， TG146.2

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2007/V43/I6/619

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