Assessment of atomic mobilities and simulation of precipitation evolution in Mg-X（X=Al,Zn,Sn）alloys
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2021年第3期
论文作者：Yuhui Zhang Yuling Liu Shuhong Liu Hai-Lin Chen Qing Chen Shiyi Wen Yong Du
文章页码：70 - 82
摘 要：As potential cast and wrought Mg alloys,Mg-X（X=Al,Zn,Sn） based alloys have attracted great interest.This work is to develop a dataset of atomic mobilities that is valid over a wide composition range.With the obtained mobilities,and a compatible thermodynamic description,as well as thermophysical parameters,simulations are performed to predict the characteristics of precipitation evolution.Examples are presented for the isothermal aging processes in Mg-x wt.%Al（x=5.9,6,8.8,9）,Mg-x wt.%Zn（x=6,6.2,8,8.65）,Mg-x wt.%Sn（x=6.04,6.92,8.64） alloys.The simulated size distribution,number density and volume fraction of precipitates reasonably account for the experimental results and provide additional information for further alloy composition design and heat treatment optimization.
Yuhui Zhang1，Yuling Liu1，Shuhong Liu1，Hai-Lin Chen2，Qing Chen2，Shiyi Wen1，Yong Du1
1. National Key Laboratory of Science and Technology for National Defense on High-strength Structural Materials, Central South University2. Thermo-Calc Software AB
摘 要：As potential cast and wrought Mg alloys,Mg-X（X=Al,Zn,Sn） based alloys have attracted great interest.This work is to develop a dataset of atomic mobilities that is valid over a wide composition range.With the obtained mobilities,and a compatible thermodynamic description,as well as thermophysical parameters,simulations are performed to predict the characteristics of precipitation evolution.Examples are presented for the isothermal aging processes in Mg-x wt.%Al（x=5.9,6,8.8,9）,Mg-x wt.%Zn（x=6,6.2,8,8.65）,Mg-x wt.%Sn（x=6.04,6.92,8.64） alloys.The simulated size distribution,number density and volume fraction of precipitates reasonably account for the experimental results and provide additional information for further alloy composition design and heat treatment optimization.
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