Influence of In-Plane Simple Shear Strain on the Grain Orientation Regulation and Stretch Formability of Pre-twinned AZ31 Magnesium Alloy Sheet

Pre-twin is widely accepted as an efficient method for weakening the basal texture to improve the plasticity of magnesium alloys, particularly for formability. However, the enhancement is limited since the largest Schmid factor (SF) of basal slip cannot be achieved. In-plane simple shear strain is u...

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Bibliographic Details
Published in:Metals and materials international 2023, 29(10), , pp.2965-2977
Main Authors: Xue, Liangliang, Wang, Lifei, Lu, Pengbin, Zhang, Qiang, Zhang, Hua, Huang, Guangsheng, Lu, Liwei, Zheng, Liuwei, Tiyyagura, Hanuma Reddy, Wang, Hongxia, Jiang, Shuyong, Shin, Kwang Seon
Format: Article
Language:English
Subjects:
Characterization and Evaluation of Materials
Chemistry and Materials Science
Elongation
Engineering Thermodynamics
Formability
Grain orientation
Heat and Mass Transfer
Machines
Magnesium base alloys
Magnetic Materials
Magnetism
Manufacturing
Materials Science
Metal sheets
Metallic Materials
Processes
Shear strain
Solid Mechanics
Texture
재료공학
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Summary:Pre-twin is widely accepted as an efficient method for weakening the basal texture to improve the plasticity of magnesium alloys, particularly for formability. However, the enhancement is limited since the largest Schmid factor (SF) of basal slip cannot be achieved. In-plane simple shear strain is used to control the twin orientation in accordance with Schmid law to further decrease the basal texture and improve the formability of the Mg alloys sheet. Consequently, secondary regulation of initial twin orientation (SRITO) technology, a novel combination procedure, was developed. In this method, the AZ31 Mg alloys sheet is compressed to pre-twins with various volumes (1%, 3%, and 5%), then the twin orientation is regulated by in-plane simple shear strain for the second time. Compared with the as-received sample, the average fracture elongation of the annealed sample with the best properties improves from 15.3 to 28.8%, and the Erichsen value increases from 2.8 to 6.1 mm due to the regulation of twin orientation. Graphical Abstract
ISSN:1598-9623
2005-4149
DOI:10.1007/s12540-023-01434-6