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Calculation of thermodynamic parameters of Mg-Al-Y alloy

Content Provider	Springer Nature Link
Author	Huang, Wenxian Yan, Hong
Copyright Year	2014
Abstract	By means of Miedema formation enthalpy model with Toop model, the excess free-energy, enthalpies of formation, excess entropies and activity values of all components of Mg-Al-Y ternary alloy were calculated with computer programming. The experimental results show that enthalpies of formation, excess free-energy and excess entropies of the ternary alloy are negative in the whole content range, the minimum values at 1 123 K are all obtained at x $_{Al}$=55%, x $_{Y}$=45%, x $_{Mg}$=0%, which are −37.969, −30.961 kJ/mol and −6.24 J/(mol·k) respectively. Activity curves show that the activity values of Al and Y in Mg-Al-Y ternary alloy rapidly decrease with the decrease of molar fraction, the values of which are very small when the molar fraction decreases to 0.4. It means that there is a strong interaction between Al and Y and stable compounds can be form in the Mg-Al-Y ternary alloy system.
Starting Page	374
Ending Page	378
Page Count	5
File Format	PDF
ISSN	10002413
Journal	Journal of Wuhan University of Technology-Mater. Sci. Ed.
Volume Number	29
Issue Number	2
e-ISSN	19930437
Language	English
Publisher	Wuhan University of Technology
Publisher Date	2014-04-16
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Mg-Al-Y ternary alloy thermodynamic parameters miedema formation enthalpy model toop model Materials Science
Content Type	Text
Resource Type	Article
Subject	Materials Science

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