An experimental study of creep‐ratchetting behavior of rolled AZ31B magnesium alloy at room temperature

2019 ◽  
Vol 43 (2) ◽  
pp. 417-428 ◽  
Author(s):  
Li Meng ◽  
Wufan Chen ◽  
Miaolin Feng
Keyword(s):  
Experimental Study ◽  
Magnesium Alloy ◽  
Room Temperature ◽  
Az31b Magnesium Alloy

Influence of Pressure Amplitude on Formability in Pulsating Hydro-Bugling of AZ31B Magnesium Alloy Sheet

2011 ◽  
Vol 128-129 ◽  
pp. 397-402
Author(s):  
Lian Fa Yang ◽  
Liang Yi ◽  
Chen Guo
Keyword(s):  
Magnesium Alloy ◽  
Wall Thickness ◽  
Room Temperature ◽  
Alloy Sheet ◽  
Pressure Amplitude ◽  
Excellent Performance ◽  
Az31b Magnesium Alloy ◽  
Stress Components ◽  
Uniform Expansion ◽  
Az31b Magnesium Alloy Sheet

The formability of the magnesium alloy sheets is poor at room temperature even though the magnesium alloy sheets are attractive because of their excellent characteristics. Application of pulsating hydroforming is a new and effective method to improve the formability. The effects of the pressure amplitude on the maximum bulging height and minimum wall thickness of the formed parts of AZ31B magnesium alloy sheets are examined using finite element simulations. It is shown that the distribution of maximum bugling height and minimum wall thickness is similar for different pressure amplitude A, and a uniform expansion in bulging region is obtained, the cause of the uniform expansion obtained may be caused by the variation of stress components. The AZ31B sheet has an excellent performance in formability when the pressure amplitude and pulsating frequency are properly selected.

Experimental study on brazing AZ31B magnesium alloy by magnalium alloys

2019 ◽  
Vol 64 (1) ◽  
pp. 233-241 ◽  
Author(s):  
Yongchao Wu ◽  
Wenqing Qu ◽  
Zheng Wang ◽  
Hongshou Zhuang
Keyword(s):  
Experimental Study ◽  
Magnesium Alloy ◽  
Az31b Magnesium Alloy

Research on Formability of AZ31B Magnesium Alloy at Room Temperature

2014 ◽  
Vol 886 ◽  
pp. 3-6
Author(s):  
Zu Jian Yu ◽  
Jian Hui Li ◽  
Yan Yang
Keyword(s):  
Magnesium Alloy ◽  
Room Temperature ◽  
Strain Ratio ◽  
Alloy Sheet ◽  
Strain Hardening Exponent ◽  
Drawing Ratio ◽  
Plastic Strain Ratio ◽  
Az31b Magnesium Alloy ◽  
Magnesium Alloy Sheet ◽  
Az31b Magnesium Alloy Sheet

Tensile tests and a cold deep drawing process were developed at room temperature to estimate the stamping formability of AZ31B magnesium alloy sheet. The results show that AZ31B magnesium alloy sheet has poor formability at room temperature with the total elongation of ~ 20%, the yield ratio is about 0.6 and the strain-hardening exponent is 0.18, while the plastic strain ratio is 1.58, and the earing ratio is-0.55.Thus, AZ31B magnesium alloy sheet can not suffer server plastic deformation. It was found that comparatively shallow magnesium alloy cups were satisfactorily formed at room temperature without heating when the punch fillet radius 6mm and the die fillet radius10mm with a 1mm thickness sheet with limit drawing ratio of 1.25.

Effect of Strain Rate on Mechanical Behavior of Extruded AZ31B Magnesium Alloy under Tensile Deformation

2012 ◽  
Vol 560-561 ◽  
pp. 979-983
Author(s):  
Chang Jian Geng ◽  
Bao Lin Wu ◽  
Yan Dong Wang
Keyword(s):  
Magnesium Alloy ◽  
Brittle Fracture ◽  
Tensile Test ◽  
Strain Rate ◽  
Mechanical Behavior ◽  
Room Temperature ◽  
Tensile Deformation ◽  
Az31b Magnesium Alloy ◽  
Axial Tensile ◽  
Fracture Character

Uni-axial tensile test was conducted at room temperature on a weak texture AZ31B magnesium alloy at different strain rate, from 2.8×10-5s-1 to 1.1×10-1s-1. The mechanical behavior was investigated. It was found that as strain rate is increased, flat character of the stress-strain curves can be found and {10-12} tension twinning is responsible for this phenomenon. The sample exhibites a brittle fracture at 1.1×10-1s-1 strain rate while exhibites a ductile fracture character at 2.8×10-5s-1 strain rate.

Formability of AZ31B Magnesium Alloy Sheet in Hydro-Bugling by Pulsating Hydraulic Pressure

2011 ◽  
Vol 295-297 ◽  
pp. 1699-1704
Author(s):  
Liang Yi ◽  
Lian Fa Yang ◽  
Chen Guo
Keyword(s):  
Finite Element ◽  
Magnesium Alloy ◽  
Room Temperature ◽  
Alloy Sheet ◽  
Hydraulic Pressure ◽  
Excellent Performance ◽  
Az31b Magnesium Alloy ◽  
Magnesium Alloy Sheet ◽  
Forming Technology ◽  
Az31b Magnesium Alloy Sheet

The formability of the magnesium alloy sheets is poor at room temperature even though the magnesium alloy sheets are attractive because of their excellent characteristics. Hydro-forming technology, especially the pulsating hydro-forming, may be a way to improve the formability. Finite element simulations have been conducted to investigate the formability of AZ31B magnesium alloy sheet in hydro-bugling by pulsating hydraulic pressure. The influence of linear pressure, pulsating pressure and pulsating frequency on the maximum bulging height and minimum wall thickness of the formed parts have been analyzed. The research results show that the formability of AZ31B magnesium alloy sheet can be improved dramatically by pulsating hydro-forming. And enough bugling height can be obtained by lesser forming hydraulic pressure. The AZ31B sheet has an excellent performance in formability when the pulsating frequency is properly selected.

Effect of Differential Speed Rolling on Microstructure and Mechanical Properties of AZ31B Magnesium Alloy Sheets

2011 ◽  
Vol 415-417 ◽  
pp. 1537-1544
Author(s):  
Hua Qiang Liu ◽  
Di Tang ◽  
Zhen Li Mi ◽  
Zhen Li
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Magnesium Alloy ◽  
Room Temperature ◽  
Az31b Magnesium Alloy ◽  
Microstructure And Mechanical Properties ◽  
Differential Speed Rolling ◽  
Conventional Rolling ◽  
Rolling Technology ◽  
Differential Speed

The grain size and the distribution of crystal orientation have an important effect on the mechanical properties of wrought AZ31B magnesium alloy sheets. Because the AZ31B magnesium alloy sheets rolled by conventional rolling have a poor formability at room temperature, a new rolling technology of differential speed rolling is used to improve the mechanical properties of AZ31B magnesium alloy. The research shows that the number of twinning crystal decreases, the number of the core of dynamically recrystallized grain increases, and the grain size become fine and isotropy by differential speed rolling with the increase of the reduction and the improving of the rolling temperature to some extent. The differential speed rolling not only improves the isotropy of the basal texture and also improves the microstructure and mechanical properties.

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