Study on the formability of magnesium alloy for bearing cover of the car under hot forging

• Main Authors: Pao-Te Wang, 王寶德
• Other Authors: Su - Hai Hsiang
• Format: Others
• Language: zh-TW
• Published: 2008
• Online Access: http://ndltd.ncl.edu.tw/handle/93814136005946231551

碩士 === 國立臺灣科技大學 === 機械工程系 === 96 === This study investigates the formability of AZ31 and AZ61 magnesium alloy for bearing cover of the car under hot forging. Firstly high speed metal test machine of China steel Co. Ltd. is used to carry out the compression tests under different forming temperature and strain rates to obtain the stress-strain curves. Then, the stress-strain data obtained from compression test under different dies are applied to analyze the formability of magnesium alloy for bearing cover of the car under forging by commercial package DEFORM. Besides, hot forgings of magnesium alloy for bearing cover of car are carried out to study the formability of magnesium alloy, and to find the best forging condition. Finally, from the measured result of hardness and metallographic observation of forged part, the influence of forming temperatures on the strength and microstructure of magnesium alloy under forging of bearing cover of car are evaluated.