Microstructure Evolution and Grain Growth Model of AZ31 Magnesium Alloy under Condition of Isothermal | Zendy

Zhongtang Wang | Zendy; Lingyi Wang | Zendy; Lizhi Liu | Zendy

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Microstructure Evolution and Grain Growth Model of AZ31 Magnesium Alloy under Condition of Isothermal

Author(s) -

Zhongtang Wang,

Lingyi Wang,

Lizhi Liu

Publication year - 2015

Publication title -

indian journal of materials science

Language(s) - English

Resource type - Journals

ISSN - 2314-7490

DOI - 10.1155/2015/897686

Subject(s) - materials science , grain growth , microstructure , magnesium alloy , grain size , isothermal process , metallurgy , atmospheric temperature range , annealing (glass) , alloy , activation energy , magnesium , thermodynamics , chemistry , physics , organic chemistry

Microstructure evolution of AZ31 magnesium alloy in annealing process had been investigated by experiment study at heating temperature range of 150°C–450°C and holding time range of 15 min–60 min. The effects of heating temperature and holding time on grain growth had been analyzed. The results presented that the grain size tends to grow up with the increase of holding time at a certain temperature. At a certain holding time, the grain size increased firstly and then decreased at the heating temperature range of 150–250°C. And when heating temperature is higher than 250°C, the grain grows up gradually with the increase of heating temperature. The grain growth model of AZ31 Mg alloy has been established by regression based on the experimental data at temperature of 250–450°C, and the relative error between model calculation results and experimental results is less than 19.07%. Activation energy of grain growth of AZ31 magnesium alloy had been determined

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