Microstructure evolution and mechanical response of extruded AZ31B magnesium alloy sheet at large strains followed by annealing treatment

Extruded AZ31B magnesium alloy sheets were stretched to large strains (7%, 13%, 15% and 17%) along the transverse direction, and then were annealed at 350°C for 60min. The uniaxial tensile tests and Erichsen tests on the as-received sheet and stretched samples in annealed condition (SA) were conduct...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2014-11, Vol.618, p.262-270
Main Authors: Dong, Jingren, Zhang, Dingfei, Dong, Yufeng, Chai, Sensen, Pan, Fusheng
Format: Article
Language:English
Subjects:
Annealing
Applied sciences
Cold working, work hardening
annealing, quenching, tempering, recovery, and recrystallization
textures
Cross-disciplinary physics: materials science
rheology
Elasticity. Plasticity
Evolution
Exact sciences and technology
Extruded AZ31 sheet
Extrusion
Formability
Heat treatment
Magnesium base alloys
Materials science
Mechanical properties and methods of testing. Rheology. Fracture mechanics. Tribology
Metals. Metallurgy
Microstructure
Other heat and thermomechanical treatments
Physics
Production techniques
Static recrystallization
Strain
Surface layer
Texture
Treatment of materials and its effects on microstructure and properties
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Summary:Extruded AZ31B magnesium alloy sheets were stretched to large strains (7%, 13%, 15% and 17%) along the transverse direction, and then were annealed at 350°C for 60min. The uniaxial tensile tests and Erichsen tests on the as-received sheet and stretched samples in annealed condition (SA) were conducted. The results showed that the microstructure of extruded AZ31B magnesium alloy sheets was modified by static recrystallization (SRX). The basal texture intensity was significantly weakened and its spread became more dispersive. Compared with the as-received sheets, improved mechanical properties of SA sheets were achieved. The Erichsen value was significantly increased from 2.5 to 5.6 by about 124% due to the weakened texture.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2014.09.057