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Supervised by Ministry of Industry and Information Technology of The People's Republic of China Sponsored by Harbin Institute of Technology Editor-in-chief Yu Zhou ISSNISSN 1005-9113 CNCN 23-1378/T

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Related citation:Zhen-Ling Wang,Yu-Cheng Yu,Zun-Jie Wei.Microstructure of the Hypoeutectic Al-Mg Alloy Solidified at 4 GPa High Pressure[J].Journal of Harbin Institute Of Technology(New Series),2013,20(5):101-105.DOI:10.11916/j.issn.1005-9113.2013.05.018.
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Microstructure of the Hypoeutectic Al-Mg Alloy Solidified at 4 GPa High Pressure
Author NameAffiliation
Zhen-Ling Wang College of Materials Science and Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China 
Yu-Cheng Yu College of Materials Science and Engineering, Heilongjiang University of Science and Technology, Harbin 150022, China 
Zun-Jie Wei School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 150001, China 
Abstract:
High pressure solidification rules of Al-Mg alloy needs to be discussed further for its wide range of application. Microstructures and phases of Al-25wt％Mg alloy solidified at 4 GPa were studied by optical microscope, X-ray diffractmeter, energy dispersive X-ray spectroscopy and transmission electron microscopy (TEM). The microstructure evolution mechanism of Al-25Mg alloy under high pressure was analyzed. The result shows that the alloy consists of α-Al phase and Al3Mg2 phase under normal pressure. However, only Al12Mg17 phase forms without Al3Mg2 phase at 4 GPa. In addition, Mg concentration in α-Al phase increases and that of the lattice constant also increases. The α-Al dendrite presents the broken arms under normal pressure, after high pressure solidification, the morphology of the dendrite tends to integrate and the size of the dendrite arms decreases.
Key words:  Al-25Mg alloys  High pressure solidification  microstructure  phase
DOI：10.11916/j.issn.1005-9113.2013.05.018
Clc Number:TG146.2+1
Fund:

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