Yield and Plastic Deformation of Mg-Alloy AZ31 at Elevated Temperatures

Gaofeng Qan

doi:10.4028/www.scientific.net/MSF.488-489.623

Paper Titles

Development of Semi-Solid Processes for Hot Extrusion of Magnesium Alloys
p.605

The Influence of Twinning on the Hot Working Flow Stress and Microstructural Evolution of Magnesium Alloy AZ31
p.611

New Processing Technology of Twin Roll Strip Casting of AZ31B Magnesium Strip
p.615

Hot Rolling of AZ31 Magnesium Alloy and Its Effects on Microstructure and Mechanical Properties
p.619

Yield and Plastic Deformation of Mg-Alloy AZ31 at Elevated Temperatures
p.623

Microstructure and Mechanical Properties of AM50+xTi Magnesium Alloys Extruded from As-Cast and Solution Treated Conditions
p.629

An OIM Analysis on the Deformation Mechanism in Hot Compressed AZ31 Magnesium Alloy
p.633

Forming Limit and Loading Path of Mg-Alloy Tube Bulging
p.637

Microstructure Properties Study of Commercial Magnesium Alloy AZ31D
p.641

HomeMaterials Science ForumMaterials Science Forum Vols. 488-489Yield and Plastic Deformation of Mg-Alloy AZ31 at...

Yield and Plastic Deformation of Mg-Alloy AZ31 at Elevated Temperatures

Abstract:

The yield and plastic deformation behaviour of wrought Mg-alloy AZ31 sheets were investigated at elevated temperatures from ambient to 300°C. It is found that the 0.2% proof stress and ultimate strength decrease linearly with increasing temperature, and the Young’s modulus goes down in the same way. Whereas the ductility, expressed by elongation, increases with temperature, in contrast to the decrease in uniform elongation. The plastic deformation anisotropy, represented by the ratio of transverse and thickness strain of the plate sample, decreases as the temperature increases, and at about 225°C, coincidentally, reaches to unity. The activation volumes for yield stress and ultimate strength are discussed with a thermal activation law-Arrhenius Equation.

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Materials Science Forum (Volumes 488-489)

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623-628

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https://doi.org/10.4028/www.scientific.net/MSF.488-489.623

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Online since:

July 2005

Authors:

Gaofeng Qan

Keywords:

Anisotropy, AZ31 Alloy, Elevated Temperature, Sheet, Thermal Activation

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