Effect of cryorolling on microstructure and mechanical properties of a peak-aged AA6082 extrusion

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• 作者：Zebing Xu^a ; Manping Liu^b ; ^{manpingliu@ujs.edu.cn} ; Zhihong Jia^c ; Hans J. Roven^a ; ^{hans.j.roven@material.ntnu.no}
• 关键词：Peak-aged AA6082 alloy ; Cryorolling ; Microbands ; Hierarchical microstructure ; Mechanical properties
• 刊名：Journal of Alloys and Compounds
• 出版年：2017
• 出版时间：25 February 2017
• 年：2017
• 卷：695
• 期：Complete
• 页码：827-840
• 全文大小：6364 K
• 卷排序：695

文摘

A peak-aged AA6082 alloy was rolled to different thickness reductions at temperature of liquid nitrogen. Under cryorolling, microbands are most likely to form in the grains having high Schmid factors. A hierarchical microstructure is developed as a consequence of microbands intersection. An extraordinary combination of high ductility and high strength is achieved in the severely cryorolled alloy. The cryorolling technology should be attractive for industry application in view of producing ultrafine grained alloys.