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Understanding the Microscale Plastic Behavior and Deformation Mechanism of Magnesium Alloy via Ex Situ Experiments and Full-Field Crystal Plasticity Modeling by Haiming Zhang; Shuai Xu; Xiaoqing Shang; Zhenshan Cui is a book available to read on EtoBox.

What is Understanding the Microscale Plastic Behavior and Deformation Mechanism of Magnesium Alloy via Ex Situ Experiments and Full-Field Crystal Plasticity Modeling about?

Magnesium alloys have been of growing interest for their low density and high specific strength, but their applications are impeded by their poor formability at room temperature. This work employs the state-of-art experimental and modeling techniques to understand the joint effect of thickness and grain size on the plastic behavior and deformation mechanism of wrought Mg alloy. Equal channel angle pressing was applied to AZ31 Mg alloy to fabricate billets with different grain sizes but the similar basal texture. Interrupted micro-tensile tests combined with ex situ EBSD characterizations were carried on the fine-polished specimens with different grain sizes and thicknesses. It shows that mechanical twinning is significantly affected by both grain size and thickness. In particular, the volume fraction of extension twins decreases with the number of grains in the thickness. Full-field crystal plasticity simulations demonstrate that both the contributions of basal slip and twinning are rather sensitive to grain size.

Author

Haiming Zhang; Shuai Xu; Xiaoqing Shang; Zhenshan Cui

Publisher

Springer International Publishing AG

Published

2021

Language

EN

ISBN

9783030753818

Subjects

Engineering, Science, Stem