Grain Growth Model of AZ80 Magnesium Alloy Under Isothermal Condition

2017 International Symposium on Application of Materials Science and Energy Materials

材料科学;能源学

Wang, Zhongtang^1 ; Wang, Minghao^1 ; Wang, Lingyi^2 ; Yu, Xiaolin^1

School of Material Science and Engineering, Shenyang Ligong University, Shenyang

110159, China^1

Shenyang Institute of Technology, Liaoning, Fushun

113122, China^2

关键词: AZ80 magnesium alloy;    Grain growth modeling;    Heating temperatures;    Holding time;    Isothermal conditions;    Micro-structure evolutions;    Model calculations;    Relative errors;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/322/2/022050/pdf
DOI  :  10.1088/1757-899X/322/2/022050

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

Microstructure evolution of AZ80 magnesium alloy under isothermal condition is researched by experiment. Effect law of heating temperature and holding time on grain size for AZ80 magnesium alloy is researched. With increasing of holding time and with rising of heating temperature, the grain size increases obviously. According to the test data, the grain growth model of AZ80 magnesium alloy under isothermal condition is established based on Seller's model, and the activation energy of grain growth of AZ80 magnesium alloy is determined, Q=85900J/mol. The model calculation results are in good agreement with that of experiment, and the relative errors between the model calculation results and that of experiment are less than 15.6%.