Effect of Rolling Parameters on Room-Temperature Stretch Formability of Mg-2Zn-0.5Ca Alloy

被引:1
作者
Li, Wei [1 ]
Huang, Guangjie [1 ]
Chen, Xingpin [1 ]
Huang, Xinde [1 ]
机构
[1] Chongqing Univ, Sch Mat Sci & Engn, Chongqing 400044, Peoples R China
基金
中国国家自然科学基金;
关键词
magnesium; rolling parameters; microstructure; texture; stretch formability; MECHANICAL-PROPERTIES; TEXTURE; SHEET; CA; MICROSTRUCTURE; MAGNESIUM; ANISOTROPY; REDUCTION; SOLUTE; SLIP;
D O I
10.3390/ma16020612
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
In this work, Mg-2Zn-0.5Ca (wt.%) alloy sheets fabricated according to various rolling parameters were evaluated to investigate the effect of rolling parameters on room-temperature stretch formability. The sheet rolled at 360 degrees C with a pass rolling reduction of 10 similar to 33% exhibited the worst I.E. value of 4.4 mm, while the sheet rolled at 360 degrees C with a pass rolling reduction of 20 similar to 50% exhibited the best index Erichsen (I.E.) value of 5.9 mm. Among the sheets, the (0002) basal texture intensity was the weakest, and the grain basal poles split away from the normal direction toward both the rolling direction and the transverse direction. Microstructural and deformation mechanism measurements of stretch forming to 2 mm for the sheet rolled at 360 degrees C with a pass rolling reduction of 20 similar to 50% by electron backscatter diffraction and in-grain misorientation axes showed that there was a higher activity of {10-12} extension twins and that a prismatic slip was initiated. As a result, the weakening of the texture and the broader distribution of basal poles in the plane contributed to the improved formability of the sheet rolled at 360 degrees C with a pass rolling reduction of 20 similar to 50%.
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页数:14
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