AZ31 마그네슘 합금의 크리이프 특성과 단시간 크리이프 수명 예측

Abstract

As the machine industry develop recently, the use of the serviceable material is increasing. A study on development of magnesium alloy and high creep characteristics and rupture life prediction was advanced actively. However, there are very few studies on high creep life prediction of AZ31 magnesium alloy to an initial strain method(ISM). Thus, in this study was investigated about relationship expression of creep stress vs steady state creep rate and relationship expression of creep stress vs initial strain, relationship expression of creep life vs initial strain through high creep experiment of AZ31 magnesium alloy. And then, creep rupture life prediction expression was investigated by ISM. The creep deformation will investigate about the activation energy Qc and the applied stress in the temperature range of 160~180℃ and stress range of 109~141MPa.