Effect of the rolling process on microstructures and mechanical properties of the extruded LA91 alloy sheet

摘要：

The microstructure evolution of the extruded Mg-9Li-1Al (LA91) during rolling was investigated taking account of effects of different routes including hot rolling, and cross rolling. The rolling parameters were suggested by thermal compression testing. As a result, the suggested rolling parameters were 250℃ and 1.0s-1. Transverse hot rolling would bring a finer microstructure to the as-rolled LA91 sheet. With the enhancement of the rolling reduction during unidirectional hot rolling the α-Mg phase became granular or short rod-like from long strip-like. Transverse + longitudinal hot rolling would improve the microstructure and was a better cross rolling route by which the strength and the elongation of the cross rolled LA91 sheet reached 243MPa and 20％ respectively. The over-aging existed in the cross rolled LA91 sheets.

关键词： Mg-9Li-1Al alloy cross rolling microstructure mechanical properties

作者: Bin Jiang Qingshan Yang Liang Gao Fusheng Pan

作者单位: College of Materials Science and Engineering, Chongqing University, Chongqing, China, 400045 Nationa College of Materials Science and Engineering, Chongqing University, Chongqing, China, 400045

会议类型: 国际会议

会议名称: 11th IUMRS International Conference in Asia(第十一届国际材联亚洲材料大会 IUMRS-ICA 2010)

会议地点: 青岛

会议语种:英文

页码: 90-95

在线出版日期: 2010-09-25（万方平台首次上网日期，不代表论文的发表时间）