Microstructure and mechanical properties of Mg-Al-Zn alloy sheets severely deformed by asymmetrical rolling

作者：Kim W J^*; Lee J B; Kim W Y; Jeong H T; Jeong H G

来源：Scripta Materialia, 2007, 56(4): 309-312.

DOI：10.1016/j.scriptamat.2006.09.034

• texture
• magnesium alloy
• grain refining
• mechanical properties
• asymmetrical rolling

By applying a high ratio of the circumferential velocities between the upper and lower rolls in asymmetrical rolling, a very fine grain size of 1.4 mu m could be achieved after a single pass of 70% thickness reduction. Basal fiber texture was notably weakened during the rolling. The rolled sheets exhibited high yield stresses over 300 MPa and a maximum elongation of 35%. Their Hall-Petch relation was compared with those for the conventionally rolled and equal channel angular pressing processed AZ31 alloys.

• 出版日期2007-2