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Journal of Materials Engineering and Performance
Published in: Journal of Materials Engineering and Performance 1/2014

01-01-2014

Grain Growth and β-Mg17Al12 Intermetallic Phase Dissolution During Heat Treatment and Its Impact on Deformation Behavior of AZ80 Mg-Alloy

Authors: P. Palai, N. Prabhu, P. D. Hodgson, B. P. Kashyap

Published in: Journal of Materials Engineering and Performance | Issue 1/2014

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Abstract

Microstructure evolution after solutionizing and ageing treatment of cast AZ80 Mg alloy were investigated using optical and scanning electron microscopy. Effect of these treatments on grain size, β-Mg17Al12 intermetallic phase, mechanical behavior, and flow asymmetry were investigated. The initial continuous network of β-phase found to be reduced after solutionizing. The dissolution of β-phase and simultaneous grain growth are found to be interrelated. Mechanical properties including yield strength, maximum strength (ultimate compressive strength), and maximum strain attainable in compressive found almost twice than the corresponding values obtained in tension. The asymmetry in compressive and tensile properties is found to decrease with grain size at certain solutionizing duration. Particular heat treatment found to offer best combination of tensile compressive flow properties in AZ80 Mg alloy. Aging under certain conditions found to minimize the strength asymmetry.
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Metadata
Title
Grain Growth and β-Mg17Al12 Intermetallic Phase Dissolution During Heat Treatment and Its Impact on Deformation Behavior of AZ80 Mg-Alloy
Authors
P. Palai
N. Prabhu
P. D. Hodgson
B. P. Kashyap
Publication date
01-01-2014
Publisher
Springer US
Published in
Journal of Materials Engineering and Performance / Issue 1/2014
Print ISSN: 1059-9495
Electronic ISSN: 1544-1024
DOI
https://doi.org/10.1007/s11665-013-0722-9

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