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Title: Numerical Modeling of Magnesium Alloy Sheet Metal Forming at Elevated Temperature

Abstract

The development of light-weight vehicle is in great demand for enhancement of fuel efficiency and dynamic performance. The vehicle weight can be reduced effectively by using lightweight materials such as magnesium alloys. However, the use of magnesium alloys in sheet forming processes is still limited because of their low formability at room temperature and the lack of understanding of the forming process of magnesium alloys at elevated temperatures. In this study, uniaxial tensile tests of the magnesium alloy AZ31B-O at various temperatures were performed to evaluate the mechanical properties of this alloy relevant for forming of magnesium sheets. To construct a FLD (forming limit diagram), a forming limit test were conducted at temperature of 100 and 200 deg. C. For the evaluation of the effects of the punch temperature on the formability of a rectangular cup drawing with AZ31B-O, numerical modelling was conducted. The experiment results indicate that the stresses and possible strains of AZ31B-O sheets largely depend on the temperature. The stress decreases with temperature increase. Also, the strain increase with temperature increase. The numerical modelling results indicate that formability increases with the decrease in the punch temperature at the constant temperature of the die and holder.

Authors:
;  [1]; ;  [2];  [3]
  1. School of Mechanical and Aerospace Engineering, Seoul National University, Seoul 151-744 (Korea, Republic of)
  2. Division of Mechanical and Mechatronics Engineering, Kangwon National University, Gangwon-Do 200-701 (Korea, Republic of)
  3. Press Manufacutring Eng. Dept, KIA MOTORS CORP., Gunggi-Do 445-711 (Korea, Republic of)
Publication Date:
OSTI Identifier:
21061728
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 908; Journal Issue: 1; Conference: NUMIFORM 2007: 9. international conference on numerical methods in industrial forming processes, Porto (Portugal), 17-21 Jun 2007; Other Information: DOI: 10.1063/1.2740871; (c) 2007 American Institute of Physics; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; COMPUTERIZED SIMULATION; DRAWING; EFFICIENCY; EVALUATION; MAGNESIUM; MAGNESIUM ALLOY-AZ31B; MECHANICAL PROPERTIES; NUMERICAL ANALYSIS; PERFORMANCE; SHEETS; STRAINS; STRESSES; TEMPERATURE DEPENDENCE; TESTING

Citation Formats

Lee, Myeong-Han, Oh, Soo-Ik, Kim, Heon-Young, Kim, Hyung-Jong, and Choi, Yi-Chun. Numerical Modeling of Magnesium Alloy Sheet Metal Forming at Elevated Temperature. United States: N. p., 2007. Web. doi:10.1063/1.2740871.
Lee, Myeong-Han, Oh, Soo-Ik, Kim, Heon-Young, Kim, Hyung-Jong, & Choi, Yi-Chun. Numerical Modeling of Magnesium Alloy Sheet Metal Forming at Elevated Temperature. United States. doi:10.1063/1.2740871.
Lee, Myeong-Han, Oh, Soo-Ik, Kim, Heon-Young, Kim, Hyung-Jong, and Choi, Yi-Chun. Thu . "Numerical Modeling of Magnesium Alloy Sheet Metal Forming at Elevated Temperature". United States. doi:10.1063/1.2740871.
@article{osti_21061728,
title = {Numerical Modeling of Magnesium Alloy Sheet Metal Forming at Elevated Temperature},
author = {Lee, Myeong-Han and Oh, Soo-Ik and Kim, Heon-Young and Kim, Hyung-Jong and Choi, Yi-Chun},
abstractNote = {The development of light-weight vehicle is in great demand for enhancement of fuel efficiency and dynamic performance. The vehicle weight can be reduced effectively by using lightweight materials such as magnesium alloys. However, the use of magnesium alloys in sheet forming processes is still limited because of their low formability at room temperature and the lack of understanding of the forming process of magnesium alloys at elevated temperatures. In this study, uniaxial tensile tests of the magnesium alloy AZ31B-O at various temperatures were performed to evaluate the mechanical properties of this alloy relevant for forming of magnesium sheets. To construct a FLD (forming limit diagram), a forming limit test were conducted at temperature of 100 and 200 deg. C. For the evaluation of the effects of the punch temperature on the formability of a rectangular cup drawing with AZ31B-O, numerical modelling was conducted. The experiment results indicate that the stresses and possible strains of AZ31B-O sheets largely depend on the temperature. The stress decreases with temperature increase. Also, the strain increase with temperature increase. The numerical modelling results indicate that formability increases with the decrease in the punch temperature at the constant temperature of the die and holder.},
doi = {10.1063/1.2740871},
journal = {AIP Conference Proceedings},
number = 1,
volume = 908,
place = {United States},
year = {Thu May 17 00:00:00 EDT 2007},
month = {Thu May 17 00:00:00 EDT 2007}
}