Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7974010 | Materials Science and Engineering: A | 2018 | 7 Pages |
Abstract
The effects of pre-rolling treatment on the grain refinement, dynamic precipitation and mechanical properties of a Mg-6 wt%Zn-1 wt%Mn alloy (ZM61) processed by high strain rate rolling (HSRR) were investigated. The results indicate that: (1) a large number of twins and microbands formed during pre-rolling treatment, which provide plenty of nucleation sites for dynamic recrystallization (DRX) during subsequent HSRR. As a result, an average grain size of 0.8 µm and a DRX degree of 99% were obtained for the alloy after pre-rolling and subsequent HSRR; (2) the pre-rolling treatment also resulted in the formation of a high density of fine precipitates, distributing uniformly in the matrix; (3) an excellent balance of the strength and ductility was achieved for the alloy processed by pre-rolling and subsequent HSRR, which is superior to that of the alloy processed only by HSRR.
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Physical Sciences and Engineering
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Authors
Jimiao Jiang, Jiang Wu, Song Ni, Hongge Yan, Min Song,