Browse > Article

A study on forming characteristics of magnesium alloy (AZ31) on various temperatures  

LEE, Han-Gyu (Dept. of Mechanical System Design and Engineering, Seoul National University of Science and Technology)
La, Won-Bin (Dept. of Mechanical System Design and Engineering, Seoul National University of Science and Technology)
Hong, So-Dam (Dept. of Mechanical System Design and Engineering, Seoul National University of Science and Technology)
LEE, Chang-Whan (Dept. of Mechanical System Design and Engineering, Seoul National University of Science and Technology)
Publication Information
Design & Manufacturing / v.12, no.3, 2018 , pp. 42-47 More about this Journal
Abstract
Recently, in the surge of global environmental issues, there has been a great attention to lightweight materials in purpose of saving energy. Magnesium alloys not only have low specific gravity, and superb specific stiffness, but are also excellent in blocking vibrations and electromagnetic waves. So demand for this material is getting bigger rapidly throughout the industry. In this study, we examined the improvement of formability of magnesium alloy AZ31 material in warm working. Drawing, bending and shearing process were carried out by varying the forming temperature and the forming speed, and the influence of the variables on each process was studied. In the experiments, the high forming temperature and low forming speed results in high formability in the drawing process and the bending process. In the shearing process, as the forming temperature increases, the length of the fracture decreases.
Keywords
Formability; Magnesium alloy; Punch speed; Temperature;
Citations & Related Records
연도 인용수 순위
  • Reference
1 Y. G. LEE, "A Study on the Warm Deep Drawability of Mg-Alloy Sheet Metal", Seoul National University of Science and Technology, Master Thesis, pp. 9-10, 2004.
2 J. H. Park, "A development of temperature dependent constitutive equation for Magnesium alloy sheet regarding twinning behavior", Korea Polytechnic University, Ph. D Thesis, pp. 28-30, 2016.
3 B. K. Raghunath, K. Raghukandan, R. Karthikeyan, K. Palanikumar, U. T. S. Pillai, & R. Ashok Gandhi, "Flow stress modeling of AZ91 magnesium alloy at elevated temperature.", Journal of Alloys and Compounds. 509. pp. 4992-4998, 2011.   DOI
4 T. Obara, H. Yoshinga, & S. Morozumi, "Slip system in magnesium", Acta Metallurgica, 21., pp. 845-858, 1973.   DOI
5 I. D. CHoi, D. M. Kim, D. M. Bruce, D. K. Matlock, & J. G. Speer, "Effect of Prestrain and Bake Hardening Treatment on the High Speed Deformation Behavior of Automotive Steels", Korean Journal of Metals and Materials, 43(4), 139, 2005.