Study on Hydroforming of Magnesium Alloy Tube under Temperature Condition

5th Annual International Conference on Material Science and Environmental Engineering

材料科学;生态环境科学

Wang, Xinsong^1 ; Wang, Shouren^1 ; Zhang, Yongliang^2 ; Wang, Gaoqi^1 ; Guo, Peiquan^1 ; Qiao, Yang^1

School of Mechanical Engineering, University of Jinan, Shandong, China^1

Shandong Academy of Metrology of China, China^2

关键词: Elongation rates;    Finite element simulations;    Forming limit diagrams;    Fracture topographies;    Mold temperatures;    Molding temperature;    Plastic deformation capacities;    Temperature conditions;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/301/1/012079/pdf
DOI  :  10.1088/1757-899X/301/1/012079

来源: IOP

【 摘 要 】

First of all, under 100 °C, 150 °C, 200 °C, 250 °C, 300 °C and 350 °C, respectively do the test of magnesium alloy AZ31B temperature tensile and the fracture of SEM electron microscopic scanning, studying the plastic forming ability under six different temperature. Secondly, observe and study the real stress-strain curves and fracture topography. Through observation and research can concluded that with the increase of temperature, the yield strength and tensile strength of AZ31B was increased, and the elongation rate and the plastic deformation capacity are increased obviously. Taking into account the actual production, energy consumption, and mold temperature resistance, 250 °Cwas the best molding temperature. Finally, under the temperature condition of 250 °C, the finite element simulation and simulation of magnesium alloy profiled tube were carried out by Dynaform, and the special wall and forming limit diagram of magnesium alloy were obtained. According to the forming wall thickness and forming limit diagram, the molding experiment can be optimized continuously.