Study on forming limit of single-point progressive forming of AZ31B magnesium alloy under isothermal local loading

2021 ◽  
Author(s):  
Chunjian Su ◽  
Mingyu Zhang ◽  
Hongxi Yang ◽  
Shipeng Lv ◽  
Xuemeng Li ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Single Point ◽  
Forming Limit ◽  
Local Loading ◽  
Az31b Magnesium Alloy ◽  
Progressive Forming

Experimental Research of the Formability of Lightweight Metallic Materials Used in Automotive Industry

2015 ◽  
Vol 760 ◽  
pp. 391-396 ◽  
Author(s):  
Claudia Girjob ◽  
Octavian Bologa ◽  
Sever Gabriel Racz ◽  
Cristina Biris
Keyword(s):  
Magnesium Alloy ◽  
Deformation Behaviour ◽  
Alloy System ◽  
Tensile Tests ◽  
Forming Limit ◽  
Metallic Materials ◽  
Az31b Magnesium Alloy ◽  
Materials Used ◽  
Experimental Researches ◽  
Forming Limit Curves

This paper aims to study the plastic deformation behaviour of lightweight metallic materials in order to reduce the total weight of the vehicles without affecting their performances. For the theoretical and experimental researches presented here, among these materials the AZ31B magnesium alloy has been chosen, a representative alloy for the magnesium-zinc-aluminium alloy system. The results of the theoretical researches, made on finite elements models, were validated by means of experimental researches consisting of tensile tests, forming limit curves determination tests and AZ31B magnesium alloy drawing, respectively.

FORMING LIMIT OF AZ31B MAGNESIUM ALLOY SHEET IN THE DEEP DRAWING WITH CROSS-SHAPED DIE

2008 ◽  
Vol 22 (31n32) ◽  
pp. 6045-6050 ◽  
Author(s):  
HEON YOUNG KIM ◽  
SUN CHUL CHOI ◽  
HYUNG JONG KIM ◽  
SEOK MOO HONG ◽  
YONG SEUNG SHIN ◽  
...  
Keyword(s):  
Finite Element ◽  
Magnesium Alloy ◽  
Deep Drawing ◽  
Temperature Deformation ◽  
Dome Height ◽  
Forming Limit ◽  
Process Conditions ◽  
Geometrical Parameters ◽  
Element Analysis ◽  
Az31b Magnesium Alloy

Magnesium alloy sheets are usually formed at temperatures between 150 and 300°C because of their poor formability at room temperature. In the present study, the formability of AZ31B magnesium alloy sheets was investigated by the analytical and experimental approaches. First, tensile tests and limit dome height tests were carried out at several temperatures between 25 and 300°C to get the mechanical properties and forming limit diagram (FLD). A FLD-based criterion considering the material temperature during deformation was used to predict the forming limit from a finite element analysis (FEA) of the cross-shaped cup deep drawing process. This criterion proved to be very useful in designing the geometrical parameters of the forming tools and determining optimal process conditions such as tool temperatures and blank shape by the comparison between finite element temperature-deformation analyses and physical try-out. The heating and cooling channels were also optimally designed through heat transfer analyses.

A Study on the Formability of AZ31B Magnesium Alloy Sheet with Experiment and Simulation

2009 ◽  
Vol 620-622 ◽  
pp. 173-176
Author(s):  
Jung Han Song ◽  
Geun An Lee ◽  
Hye Jin Lee ◽  
Nak Kyu Lee ◽  
S.H. Kim ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Testing Machine ◽  
Alloy Sheet ◽  
Forming Limit ◽  
Limit Curve ◽  
Forming Limit Curve ◽  
Initial Shape ◽  
Az31b Magnesium Alloy ◽  
Magnesium Alloy Sheet ◽  
Hemispherical Punch

This paper is concerned with formability of AZ31B magnesium alloy sheets at various temperatures. In order to acquire the forming limit curve for quantifying the formability of the magnesium alloy sheet, hemispherical punch forming tests are performed under various temperatures. The initial shape of the blank is rectangular and six different types of specimens are used with their length along the rolling direction of 175mm and widths along the transverse direction of 25, 50, 75, 100, 120 and 175mm. With the equipment of on a SIMADZU 100-ton universal testing machine, hemispherical punch forming tests are performed and a forming limit diagram is constructed at the temperature of 100°C, 200°C and 250°C. FE analyses of hemispherical punch forming tests are also conducted by considering ductile failure model in order to compare the forming limit curve obtained from the experiment and numerical analysis. The comparison examines problems in the current material model and it suggests a future research direction.

Forming Limit of Magnesium Alloy Sheet in Hydromechanical Deep Drawing

2012 ◽  
Vol 482-484 ◽  
pp. 2086-2089 ◽  
Author(s):  
Xian Chang Mao ◽  
Ming Guang Wang
Keyword(s):  
Magnesium Alloy ◽  
Internal Pressure ◽  
Deep Drawing ◽  
Alloy Sheet ◽  
Forming Limit ◽  
Az31b Magnesium Alloy ◽  
Hydromechanical Deep Drawing ◽  
Magnesium Alloy Sheet ◽  
Deformation Behaviors ◽  
Az31b Magnesium Alloy Sheet

The experimental research on the hydromechanical deep drawing of AZ31B magnesium alloy sheet was conducted in this paper. The deformation behaviors and the influence of internal pressure on its formability are investigated, moreover, the fracture behaviors of the obtained workpieces are discussed. The experimental results show that the formability of AZ31B magnesium alloy sheet in hydromechanical deep drawing is poorer than that in mechanical deep drawing at room temperature because the internal pressure fails to work effectively due to the weak plastic deformation capacity and the premature fracture of the kind alloy.

Evaluation and prediction of the forming limit of AZ31B magnesium alloy sheets in a cross-shaped cup deep drawing process

2009 ◽  
Vol 15 (4) ◽  
pp. 575-584 ◽  
Author(s):  
Sun Chul Choi ◽  
Heon Young Kim ◽  
Seok Moo Hong ◽  
Yong Seung Shin ◽  
Geun Ho Lee ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Deep Drawing ◽  
Forming Limit ◽  
Drawing Process ◽  
Deep Drawing Process ◽  
Az31b Magnesium Alloy
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