Hot Compression Deformation Simulation of AZ61B Magnesium Alloy

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The hot compression deformation behavior of AZ61B magnesium alloy has been investigated by using a Gleeble-1500D thermal simulator. The samples were compressed to a reduction of 50% at two temperatures (623 and 673K) with different strain rates (0.01, 0.1 and 1s-1). The relationships between flow stress and deformation temperature were analyzed, and the deformation activation energy and stress exponent were calculated based on the experimental results. With aid of the optical microscopy, scanning electron microscopy (SEM) and electron back scattered diffraction (EBSD) techniques, the microstructure and micro-texture of the deformed samples were characterized. The effects of the temperature and strain rates on the hot compression behavior of the AZ61B magnesium alloy have been investigated by detail analyses of the flow stress and microstructural characteristics of the deformed samples. For the 50% compressed samples, dynamic recrystallization occurred during the hot compression. The orientations of the dynamic recrystallized grains with equiaxed shape were investigated by EBSD technique. The relationships among the flow stress, dynamic recovery and recrystallization have been discussed by considering both the temperature and strain rate effects.

Info:

Periodical:

Materials Science Forum (Volumes 546-549)

Edited by:

Yafang Han et al.

Pages:

373-377

Citation:

P. Xiao et al., "Hot Compression Deformation Simulation of AZ61B Magnesium Alloy", Materials Science Forum, Vols. 546-549, pp. 373-377, 2007

Online since:

May 2007

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$38.00

[1] W. -J. KIM, S. W. CHUNG, C. S. CHUNG and D. KUM. Acta mater. 49 (2001) 3337-3345.

[2] Decker R F. Advanced Mater&Proc. 9 (1998) 31�35.

[3] YU Kun, LI Wenxian, WANG Richu, MA Zhengqing. The Chinese Journal of Nonferrous Metals. 13 (2003) 277-288.

[4] Mukai T. Material Science Forum. 350/351 (2000) 159-170.

[5] LIU Zheng, ZHANG Kui, ZENG Xiaoqin. Magnesium Alloy Theory and Application. CHINAMACHINE PRESS, Beijing. 2002. 9.

[6] Watanable H, Tsutsui H. Int. J. Plasticity. 17 (2001) 387-397.

[7] Cahn R W. Structure and Properties of Nonferrous Metals. Science Press, Beijing, (1999).

[8] ZHANG Xian-hong, CUI Zhen-shan, RUAN Xu-eyu. JOURNAL OF SHANGHAI JIAOTONG UNIVERSITY, 37 (2003) 1874-1877.

[9] XIA Chang-qing, WU Wen-hua, WU An-ru, WANG Yin-na. The Chinese Journal of Nonferrous Metals. 14 (2004) 1810-1815.

[10] YU Kun, LI Wenxian, WANG Richu, MA Zhengqing, ZHAO Jun, MENG Liping. ACTA METALLURGICA SINICA. 39 (2003) 492�498.

[11] Ion S E, Hunphreys F J, White S H. Acta mater. 30 (1982) (1909).

[12] CHEN Zhenhua. Magnesium Alloy. Chemical Industry Press, Beijing. (2004).

[13] Poirier J P. Plastic Deformation of Crystal. Dalian Science and Technology University Press, Dalian (1989).

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