Evaluation of Deep Drawability of Flame- Retardant Magnesium Alloy Sheets

Evaluation of Deep Drawability of Flame- Retardant Magnesium Alloy Sheets

Akihiro Minami Hirokazu Tamura Hidetoshi Sakamoto Yoshifumi Ohbuchi Yasuo Marumo

National Institute of Technology, Ariake college, Japan.

Graduate School of Science and Technology, kumamoto university, Japan.

Department of mechanical System Engineering, Doshisha university, Japan.

Faculty of Advanced Science and Technology, kumamoto university, Japan.

Page: 
182-191
|
DOI: 
https://doi.org/10.2495/SAFE-V9-N2-182-191
Received: 
N/A
|
Accepted: 
N/A
|
Published: 
30 June 2019
| Citation

OPEN ACCESS

Abstract: 

The deep drawability of flame-retardant Amca602 magnesium alloy sheets (aluminum, 6.5%; zinc, 0.08%, manganese, 0.32%; calcium, 2.1%) was investigated. Firstly, fundamental mechanical properties were obtained by performing uniaxial tension tests in the range of temperatures of 160–320°c. The tensile velocity was 0.5, 5 or 50 mm/min. Next, in deep-drawing tests, the temperature and punch velocity were changed, and a punch with a diameter of 10 mm was used. The experimental temperature was changed in the range from 240 to 340°c in increments of 20°c, and the punch velocity was 0.1, 0.5, 1.0 or 1.5 mm/s. Deep drawability improved as the temperature increased. The optimum deep- drawing temperature was found to be 320°c. A numerical simulation of deep drawing was conducted by finite element method for examining stress and strain distribution around breaking location. The experimental results and numerical simulation results were in relatively good agreement. A maximum deep-drawing depth was also obtained in the experiments and simulation.

Keywords: 

Deep Drawing, Flame-Retardant Mg Alloy, Formability, Mechanical Properties.

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