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

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Title Grain Growth and beta-Mg17Al12 Intermetallic Phase Dissolution During Heat Treatment and Its Impact on Deformation Behavior of AZ80 Mg-Alloy
 
Creator PALAI, P
PRABHU, N
HODGSON, PD
KASHYAP, BP
 
Subject AZ80 magnesium alloy
heat treatment
microstructure
strength asymmetry
MECHANICAL ANISOTROPY
MAGNESIUM ALLOY
AZ31
ZN
AL
MICROSTRUCTURE
COMPRESSION
SHEET
TWINS
SIZE
 
Description 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, beta-Mg17Al12 intermetallic phase, mechanical behavior, and flow asymmetry were investigated. The initial continuous network of beta-phase found to be reduced after solutionizing. The dissolution of beta-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.
 
Publisher SPRINGER
 
Date 2014-12-28T13:08:57Z
2014-12-28T13:08:57Z
2014
 
Type Article
 
Identifier JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 23(1)77-82
1059-9495
1544-1024
http://dx.doi.org/10.1007/s11665-013-0722-9
http://dspace.library.iitb.ac.in/jspui/handle/100/16672
 
Language English