Thermodynamic Optimization Design of Casting Mg-Zn-Cu Alloy

Abstract:

The variation of the main strengthening phase MgZn₂ of Mg-Zn-Cu alloy amount and crystallization temperature with Zn and Cu content were studied by thermodynamic calculation using FactSage software and magnesium alloy database, and according to the thermodynamic optimization results we melted Mg-6Zn-1.5Cu.We researched the structure of the experimental alloy as-cast after peak aging at 160 °Caging by TEM, XRD and DSC. The results showed that the experimental alloy aged at 160 °C was about 15% higher than Mg-6Zn binary alloy, and peak aging organization's main strengthening phase is more evenly distributed, the higher density of -MgZn₂ phase. Cu is added to improve the phenomenon of the Mg-Zn binary alloy aged structure distribution uneven precipitation of low density as well as easy to averaging.

• Periodical: Advanced Materials Research (Volume 852)
• Pages: 183-187
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.852.183
• Online since: January 2014
• Authors: Liang Ge Xu, Xiao Xian Li, Jie Ye, Xia Ji, Hong Qiu, Jing Luo, Hui Guang Yang
• Keywords: Aging, MgZn₂ Phase, Mg-Zn-Cu, Thermodynamic Calculation

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