Paper Titles
Development of a τ-Type Mg-Zn-Al Alloy: An Investigation of the Microstructure and Solidification Characteristics
p.123
Ultrasonic Treatment of Magnesium Alloy Melts and its Effects on Solidification Microstructures
p.129
Microstructure Simulation of Magnesium Alloy
p.133
Effect of Sc on Microstructures and Corrosion Properties of AZ91
p.139
Microstructure of AZ91D in Different Treatment Conditions
p.143
Low-Cycle Fatigue Behavior of Three Die Cast Magnesium Alloys
p.147
Compression Deformation Behavior of AZ91D Magnesium Alloy in Semi-Solid State
p.151
Effects of CaCO3 Modificator on Microstructure and Mechanical Properties of Cast AZ91 Magnesium Alloy
p.155
Microstructure and Mechanical Properties of Mg-Gd-Sm-Zr Alloy
p.159

Microstructure of AZ91D in Different Treatment Conditions

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Abstract:

The microstructures of magnesium alloy AZ91D in as-cast, solid solution and aging conditions were studied by optical, scanning electron and transmission electronic microscopes. The relationship between microstructure and the microhardness was analyzed. It has been found that the microhardness in the matrix varied slightly with the increasing solution time, but increased quickly with the aging time. The difference of the microhardness between the matrix and the second phase in as-cast condition is larger than that in T6 aging condition, because the aluminum-zinc-magnesium (poor) phase existed in the as-cast condition.

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Periodical:

Materials Science Forum (Volumes 546-549)

Pages:

143-146

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.546-549.143

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Online since:

May 2007

Authors:

Jin Zhang, Yan Ling Tao, Zhi Fu Sun

Keywords:

AZ91D, Hardness, Heat Treatment, Microstructure

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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