SUPERPLASTIC FORMABILITY OF AZ31 MAGNESIUM ALLOY SHEETS PRODUCED BY TWIN ROLL CASTING AND SEQUENTIAL HOT ROLLING

被引:0
|
作者
Yu, Yandong [1 ]
Lin, Kai [1 ]
Jiang, Peng [1 ]
机构
[1] Harbin Univ Sci & Technol, Sch Mat Sci & Engn, Harbin 150040, Heilongjiang, Peoples R China
来源
MODERN PHYSICS LETTERS B | 2013年 / 27卷 / 19期
关键词
Magnesium alloy; AZ31+Y+Sr; superplastic; twin roll casting; TRC; cavities; DEFORMATION;
D O I
10.1142/S0217984913410200
中图分类号
O59 [应用物理学];
学科分类号
摘要
In this paper, superplastic tensile testing and gas bulging forming of AZ31 and AZ31+Y+Sr magnesium alloys produced by twin roll casting (TRC) and sequential hot rolling were carried out. At 673 K, the superplastic formability of the TRC AZ31 magnesium alloy sheets added Y and Sr elements has improved significantly compared to the common TRC AZ31 sheets. Formations of cavities on the bulging part go through three stages of the nucleation, growth and aggregation, finally cavities merging lead to rupture at the top of the bulging part.
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页数:6
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