Affiliation:
1. Wuhan Polytechnic University
2. Beijing Research Institute of Precise Mechanical and Electronic Control Equipment
Abstract
The phase field models have been built to study the influence of the nonuniform grain boundary energy for abnormal growth of grains in the AZ31 magnesium alloy in the real time and space. The simulated results show that if the grains of a certain orientation with low grain boundary energy in the AZ31 Mg alloy, abnormal grain growth will occur after annealing treatment, and only if the local low grain boundary energy is less than 0.98σ0, can the certain grains grow abnormally in the microstructure.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
Reference25 articles.
1. X B Zhao , W M Mao. Metal recrystallization and grain growth. Beijing: Metall Industry Press, (1994).
2. M Hillert . On the theory of normal and abnormal grain growth. Acta Metal. 13 (1965) 227-238.
3. A Lawrence, J M Rickman , M P Harmer , A D Rollett. Parsing abnormal grain growth. Acta Mater. 103 (2016) 681-687.
4. R T Xiao, H Yu, P Zhou. Abnormal grain growth mechanism of austenite in high-strength welded steel Q1030. J. Univ. Sci. Technol. B. 33 (2011) 1458-1462.
5. L Z Yan, Y A Zhang, B Q Xiong, X W Li, Z H Li, H W Liu, S H Huang and G Zhao. Mechanical properties, microstructure and surface quality of Al-1.2Mg-0,6Si-0.2Cu alloy after solution heat treatment. Rare Met. 36 (2017) 550-555.