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《Heat Treatment of Metals》 2007-10
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Effects of Solution and Aging on Microstructure of AZ80 Magnesium Alloy

ZHANG Ju-mei1,2,JIANG Bai-ling1,WANG Zhi-hu1,YUAN Sen1,XIA Peng-ju1 (1.School of Materials Science and Engineering,Xi′an University of Technology,Xi′an Shaanxi 710048,China; 2.Department of Materials Science and Engineering,Xi′an University of Science & Technology,Xi′an Shaanxi 710054,China)  
The microstructure and element distribution of AZ80 magnesium alloy as-cast and after solution and aging treatment were observed and analyzed by field emission scanning electron microscope(FESEM),energy dispersive spectrometer(EDS) and X-ray diffraction(XRD).The results show that the coarse and net β-Mg17Al12 phase distributed along the grain boundaries and dendrite is almost dissolved after solution treatment,only a little β-Mg17Al12 phase discontinuously distributed along the grain boundary,a little fine grain β-Mg17Al12 phase appears in the α-Mg matrix and the content of Al in the α-Mg matrix has increased remarkably.While after aging treatment,both discontinuous and continuous precipitations of β-Mg17Al12 phase occur in the structure of AZ80 alloy.The discontinuous precipitation that is fine lamellar structure distribute in the grain boundary.However,the continuous precipitation of β-Mg17Al12 phase with granular-like and lozenge-like distribute in the grains.The distributions of Mg and Al in the microstructure of aging treated AZ80 magnesium alloy are homogeneous.
【CateGory Index】: TG166.4
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