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| Microstructure Evolution of Semi-Solid AZ91D Alloy During Isothermal Heat Treatment Process |
Yong HU1,**( ),Li RAO1,Qiang HU2 |
1. School of Mechanical and Electromechanical Engineering, East China Jiaotong University, Nanchang 330013
2. Jiangxi Key Laboratory for Advanced Copper and Tungsten Materials, Jiangxi Academy of Sciences, Nanchang 330029 |
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Cite this article:
Yong HU,Li RAO,Qiang HU. Microstructure Evolution of Semi-Solid AZ91D Alloy During Isothermal Heat Treatment Process. Chinese Journal of Materials Research, 2014, 28(12): 909-913.
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Abstract The effect of isothermal heat treatment on the microstructure evolution of semi-solid AZ91D magnesium alloy was investigated. The results show that the roundness of the primary α-Mg phase increases with the increasing temperature and time. The microstructure evolution of the semi-solid AZ91D experiences three stages during isothermal heat treatment process, i.e. the structure separation, spheroidization and final coarsening. The liquid phase of semi-solid alloy has three types, namely, the molten pool, the “entrapped liquid” pool and the liner liquid film which separates two neighbor particles. The solid phase has two types, namely, the primary α-Mg particles and the α-Mg phase formed in the second solidification.
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Received: 23 May 2014
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| Fund: *Supported by Natural Science Foundation for Distinguished Young Scholars of Jiangxi Province No.2014-2BAB216015, and Jiangxi Key Laboratory for Advanced Copper and Tungsten Materials Project No.2013-KLP-07. |
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