Acta Metall Sin  2005, Vol. 41 Issue (4): 375-379     DOI:

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Deformation~ Features Of AZ31 Mg--Alloy In Initial Period Of High Temperature Creep

TIAN Sugui; YANG Jinghong; YU Xingfu;SOHN Keunyong; KIM Kyunghyun;XU Yongbo; HU Zhuangqi

Department of Materials Science and Engineering; Shenyang University of Technology; Shenyang 110023

TIAN Sugui; YANG Jinghong; YU Xingfu; SOHN Keunyong; KIM Kyunghyun; XU Yongbo; HU Zhuangqi. Deformation~ Features Of AZ31 Mg--Alloy In Initial Period Of High Temperature Creep. Acta Metall Sin, 2005, 41(4): 375-379 .

Abstract References Related Articles Recommended Metrics Download:  PDF(415KB)  Export:  BibTeX | EndNote (RIS)       Abstract  By means of the measurement of the creep curve and the observation of TEM, an investigation has been made into the deformation feature and microstructure evolution of AZ31 Mg--alloy in the initial creep at elevated temperature. The results show that the deformation feature during creep produced in the primary stage is that a great deal of $\langle a\rangle$ dislocation is activated on basal and non--basal planes, and $\langle a+c\rangle$ dislocation slips on pyramidal planes. $\langle a\rangle$ dislocation generated during creep may cross--slip from one of non--basal plane to another non--basal planes. As creep goes on, the dynamic recovery (DRV) may occur, and the dislocations are concentrated to form the dislocation cells or walls. Another feature observed during creep is that twinning occurs as an important deformation mechanism, leading to improvement of the alloy ductility. Key words:  AZ31 Mg-alloy      creep      dislocations       Received:  26 May 2004      ZTFLH:  TG111     TG146.2   Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors TIAN Sugui YANG Jinghong YU Xingfu SOHN Keunyong KIM Kyunghyun XU Yongbo HU Zhuangqi URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y2005/V41/I4/375 [1]Winandy C D. In: Smith S D, Winandy C D, eds., Automotive Sourcing Special Report, London: Automotive Sourcing UK Ltd., 1998: 1 [2]Robert S B. Magnesium Products Design. USA: The International Magnesium Association. 1987: 373 [3]Claude D W. In: Smith S D, Winandy C D, eds., Automotive Sourcing Special Report, London: Automotive Sourcing UK Ltd., 1998: 8 [4]McQueen H J, Bourell D L. J Met, 1987; 39: 28 [5]McQueen H J, Bourell D L. 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