Phase equilibria of Mg-rich corner in Mg-Zn-Al ternary system at 300 degree C

The phase equilibria and compositions in Mg-rich corner at 300 degree C were determined in the Mg-Zn-Al ternary system through the equilibrated alloy method by using X-ray diffraction (XRD) and scanning electron microscopy (SEM) assisted with energy dispersive spectroscopy of X-ray (EDS). The result...

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Published inTransactions of Nonferrous Metals Society of China Vol. 22; no. 2; pp. 241 - 245
Main Authors REN, Yu-ping, QIN, Gao-wu, PEI, Wen-li, LI, Song, GUO, Yun, ZHAO, Hong-da
Format Journal Article
LanguageEnglish
Published 01.02.2012
Subjects
Alloy systems
Corners
Magnesium
Phase equilibria
Scanning electron microscopy
Ternary systems
X-rays
Zinc
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Summary:The phase equilibria and compositions in Mg-rich corner at 300 degree C were determined in the Mg-Zn-Al ternary system through the equilibrated alloy method by using X-ray diffraction (XRD) and scanning electron microscopy (SEM) assisted with energy dispersive spectroscopy of X-ray (EDS). The results show that there exist three three-phase regions consisted of alpha -Mg+Mg17Al12( gamma )+Al5Mg11Zn4( phi ), alpha -Mg+Mg32(Al, Zn)49( tau )+Al5Mg11Zn4( phi ) and alpha -Mg+MgZn+Mg32(Al, Zn)49( tau ), respectively. The intermetallic compounds in equilibrium with alpha -Mg phase all have large composition ranges, not appear to be linear. At the same time, both zinc and aluminum are soluble in the alpha -Mg solid solution, with which the compounds are in equilibrium.
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ISSN:1003-6326
DOI:10.1016/S1003-6326(11)61166-7