Strain-Rate Sensitivities of Different Deformation Mechanisms in AZ31B Magnesium Alloy Sheet at Various Temperatures

JOM ◽  
2021 ◽  
Author(s):  
Guowei Zhou ◽  
Ruxue Liu ◽  
Weiqin Tang ◽  
Dayong Li ◽  
Yinghong Peng ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Strain Rate ◽  
Alloy Sheet ◽  
Deformation Mechanisms ◽  
Az31b Magnesium Alloy ◽  
Magnesium Alloy Sheet ◽  
Az31b Magnesium Alloy Sheet

The Influence of Deformation Mechanisms on Rupture of AZ31B Magnesium Alloy Sheet at Elevated Temperatures

2013 ◽  
pp. 211-215 ◽  
Author(s):  
Aravindha R. Antoniswamy ◽  
Alexander J. Carpenter ◽  
Jon T. Carter ◽  
Louis G. Hector ◽  
Eric M. Taleff
Keyword(s):  
Magnesium Alloy ◽  
Elevated Temperatures ◽  
Alloy Sheet ◽  
Deformation Mechanisms ◽  
Az31b Magnesium Alloy ◽  
Magnesium Alloy Sheet ◽  
Az31b Magnesium Alloy Sheet

Study on Warm and Hot Tensile Deformation Behavior and Flow Stress of AZ31B Magnesium Alloy Sheet

2012 ◽  
Vol 488-489 ◽  
pp. 51-56 ◽  
Author(s):  
Wen Juan Li ◽  
Guo Qun Zhao ◽  
Xin Wu Ma ◽  
Jun Gao
Keyword(s):  
Flow Stress ◽  
Magnesium Alloy ◽  
Strain Rate ◽  
Magnesium Alloys ◽  
Alloy Sheet ◽  
True Stress ◽  
Stress Strain ◽  
Az31b Magnesium Alloy ◽  
Magnesium Alloy Sheet ◽  
Az31b Magnesium Alloy Sheet

The true stress-strain curves of AZ31B magnesium alloy sheet were obtained by using the uniaxial tensile tests at the temperature ranging from 50°Cto 300°C and the initial strain rate ranging from 0.001/s to 0.1/s. The influence of temperature and strain rate on the flow stress was analyzed. The results show that the flow stress decreases and the elongation in fracture increases with increasing temperature and decreasing strain rate，and the plastic performance is improved obviously. Through the analysis of the true stress-strain curves，a mathematical model of the flow stress was established based on an exponential form whose power is a quadratic function. All the coefficients in the model were fitted as functions of temperature and strain rate. The comparison of the calculated results with experimental data shows that the model established in this study can accurately reflect work hardening and strain softening effect of AZ31B magnesium alloys during the hot deformation. It can be used for the prediction of flow stress for AZ31B magnesium alloys under hot work conditions and numerical simulation of forming processes.

The Influence of Deformation Mechanisms on Rupture of AZ31B Magnesium Alloy Sheet at Elevated Temperatures

2013 ◽  
pp. 211-215
Author(s):  
Aravindha R. Antoniswamy ◽  
Alexander J. Carpenter ◽  
Jon T. Carter ◽  
Louis G. Hector ◽  
Eric M. Taleff
Keyword(s):  
Magnesium Alloy ◽  
Elevated Temperatures ◽  
Alloy Sheet ◽  
Deformation Mechanisms ◽  
Az31b Magnesium Alloy ◽  
Magnesium Alloy Sheet ◽  
Az31b Magnesium Alloy Sheet

Influence of Hot-Extrusion on Mechanical Properties of AZ31B Magnesium Alloy Sheet

2005 ◽  
Vol 15 (1) ◽  
pp. 25-30
Author(s):  
Yong-Gil Kim ◽  
Hak-Kyu Choi ◽  
Min-Cheol Kang ◽  
Hae-Yong Jeong ◽  
Cha-Hurn Bae
Keyword(s):  
Mechanical Properties ◽  
Magnesium Alloy ◽  
Hot Extrusion ◽  
Alloy Sheet ◽  
Az31b Magnesium Alloy ◽  
Magnesium Alloy Sheet ◽  
Az31b Magnesium Alloy Sheet

Double-Electrode GMAW Welding Process Research Based on the DSC

2013 ◽  
Vol 668 ◽  
pp. 321-324 ◽  
Author(s):  
Guo Hong Ma ◽  
Jun Nie ◽  
Chao Yang Zhang ◽  
Jia Ye
Keyword(s):  
Magnesium Alloy ◽  
Welding Process ◽  
Alloy Sheet ◽  
Process Research ◽  
Az31b Magnesium Alloy ◽  
Magnesium Alloy Sheet ◽  
Double Electrode ◽  
Az31b Magnesium Alloy Sheet ◽  
Gmaw Welding

Through a large number of technology experiments, finding out the matching parameters of the DE-GMAW welding of the AZ31B magnesium alloy sheet based on the DSC. This paper simply controls the motor based on the DSC to control the welding torches moving comfortably to make the welding process stable to obtain the good weld.

The tensile deformation behavior of AZ31B magnesium alloy sheet under intermittent pulse current

2021 ◽  
pp. 095440622110242
Author(s):  
Ju Guo ◽  
Xiao-Lei Cui ◽  
Wen-Kai Zhao ◽  
Cheng-Zhong Chi ◽  
Xiao-Qing Cao ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Deformation Behavior ◽  
Pulse Current ◽  
Tensile Deformation ◽  
Fracture Morphology ◽  
Alloy Sheet ◽  
Az31b Magnesium Alloy ◽  
Magnesium Alloy Sheet ◽  
Tensile Deformation Behavior ◽  
Az31b Magnesium Alloy Sheet

In this paper, to investigate the effect of loading method of pulse current on the tensile deformation behavior of AZ31B magnesium alloy sheet, the intermittent pulse current with short-time and high-frequency was introduced in uniaxial tensile tests and the influence of duty ratio and loading time of pulse current on the deformation behavior of AZ31B magnesium alloy sheet was discussed. The strain and temperature field distributions on the specimens were measured during the intermittent pulse electrically-assisted tension (IPEAT), and the microstructure and fracture morphology under different pulse current conditions were observed. Results shows appropriate pulse current parameters can effectively improve the elongation of AZ31B magnesium alloy sheet. The strain of the sample is closely related to temperature distribution. With the deformation of the sample, the temperature on the sample increases gradually and the temperature distribution is non-uniform along the tensile direction, resulting in an inhomogeneous strain distribution of the sample. In addition, grain growth and dynamic recrystallization were observed on the AZ31B magnesium alloy sheet in different degrees under intermittent pulse current. Fracture morphology analysis shows that the number of dimples and tearing edges increased on the fracture obtained under IPEAT. The microhardness analysis shows that when intermittent pulse current is applied in the tensile test, the hardness of the sheet may change. This research provides an effective idea for the forming process of magnesium alloy sheets, which can be used to form large size thin-walled sheet components, and can significantly improve the forming quality of the sheets.

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