Dynamic precipitation behavior and mechanical property of an Mg₉₄Y₄Zn₂ alloy prepared by multi-pass successive equal channel angular pressing

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• 作者：Huan Liu^a ; ^b ; ^{liuhuanseu@hhu.edu.cn} ; Jia Ju^c ; Fumin Lu^a ; Jingli Yan^d ; Jing Bai^d ; Jinghua Jiang^a ; ^b ; Aibin Ma^a ; ^b ; ^{aibin-ma@hhu.edu.cn}
• 关键词：Mg94Y4Zn2 ; Equal channel angular pressing ; Long period stacking ordered phase ; Dynamic recrystallization ; Dynamic precipitation
• 刊名：Materials Science and Engineering: A
• 出版年：2017
• 出版时间：13 January 2017
• 年：2017
• 卷：682
• 期：Complete
• 页码：255-259
• 全文大小：927 K
• 卷排序：682

文摘

After sixteen successive passes of equal channel angular pressing (ECAP), kinked 18R-LPSO phase and refined DRX grains were developed in Mg94Y4Zn2 alloy. Simultaneously, nano-sized 14H micro cells and Mg24Y5 particles were dynamically precipitated. Owing to the above microstructure characteristics, the 16p-ECAP alloy exhibited outstanding mechanical property with compressive strength and fracture strain of 611 MPa and 20.1%, respectively.