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MIAO Yu gang, LIU Li ming, ZHAO Jie, DING De kai. Microstructure feature analysis of fusion welded joint of wrought Mg-alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2003, (2): 63-66.
Citation: MIAO Yu gang, LIU Li ming, ZHAO Jie, DING De kai. Microstructure feature analysis of fusion welded joint of wrought Mg-alloy[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2003, (2): 63-66.
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Microstructure feature analysis of fusion welded joint of wrought Mg-alloy

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    Depart. of Material Science and Engineering, Dalian University of Technology, Dalian 116024, China

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  • Received Date: August 04, 2002
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  • In this paper,the microstructures,phase constituent and micro zone analysis of AZ31B wrought Mg alloy welded joint were investigated by optical microscope,XRD and EPMA.The results showed that the fibrous structure of AZ31B Mg alloy disappeared;the fine crystal grain appeared in weld metal and the microstructure of heat affected zone (HAZ) obviously became coarse.The fine equiaxed grains were observed in the weld metal,the microstructure at room temperature consists of δ-Mg phase and compound of γ-Mg17Al12.It found the Mg content in the weld metal is lower than parent metal,however,Al content is higher than parent metal,at the same time there are the segregation of Mg,Al and Zn elements in weld metal.
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