Journal of Power System Engineering (동력기계공학회지)
- Volume 9 Issue 4
- /
- Pages.96-101
- /
- 2005
- /
- 2713-8429(pISSN)
- /
- 2713-8437(eISSN)
A Study on the Characteristics of High Temperature and Mechanisms for Creep Deformation of AZ31 Mg Alloy
AZ31마그네슘 합금의 고온특성 및 크리이프 변형기구에 관한연구
Abstract
Magnesium alloys have been widely used for many structural components of automobiles and aircraft because of high specific strength and good cast ability in spite of hexagonal closed-packed crystal structure of pure magnesium. In this study, uniaxial tension tests at high temperature and creep tests are done in order to investigate the characteristics of high temperature and mechanisms for creep deformation of AZ31 Mg alloy. Yield stress and ultimate tensile stress decreased with increasing temperature, but elongation increased from results of uniaxial tension test at high temperature. The apparent activation energy Qc, the applied stress exponent n and rupture life have been determined during creep of AZ31 Mg alloy over the temperature range of 473K to 573K and stress range of 23.42 MPa to 93.59 MPa, respectively, in order to investigate the creep behavior. Constant load creep tests were carried out in the equipment including automatic temperature controller, whose data are sent to computer. At around the temperature of
Keywords