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Evolution of microstructure and texture of AZ31 magnesium alloy during hot-rolling process

Zhang, Z and Wang, MP and Li, SM and Jiang, N and Hu, HL and Hao, SM (2010) Evolution of microstructure and texture of AZ31 magnesium alloy during hot-rolling process. Zhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals, 20. pp. 1447-1454. ISSN 1004-0609

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Abstract

The single-pass hot-rolling was processed on the cast-rolled sheet of AZ31 magnesium alloy. The evolution of microstructure and texture was studied with OM, TEM and XRD. The results show that the cast-rolled sheet has a strong basal texture, and the main deformation mechanism is twinning in hot-rolling with small reduction while the dislocation slip becomes the main deformation mechanism in hot-rolling with large reduction. The thick lenticular {101̄2} twins generated in 10% hot-rolling process seriously weakens the basal texture, while two types of twins {101̄2} and {101̄1}-{101̄2} with different morphologies are produced in 20% rolling process. As the rolling reduction exceeds 20%, the dislocation slip is activated in a wider range, thus intensifying the basal texture. And the fragmentation morphology produced in the rolling process transforms to equal-axis recrystallization grains in following annealing.

Item Type: Article
Subjects: UNSPECIFIED
Divisions: UNSPECIFIED
Depositing User: Cron Job
Date Deposited: 13 Mar 2020 20:30
Last Modified: 26 Nov 2020 06:20
DOI: