New extrusion process of Mg alloy automobile wheels

来源期刊：中国有色金属学报(英文版)2010年增刊第2期

论文作者：王强 张治民 张星 李国俊

文章页码：599 - 603

Key words：magnesium alloy; road wheel; extrusion; flow-forming; spin forging

Abstract: The recent research and development of forged magnesium road wheel were reviewed. Methods of flow-forming, spin forging of manufacturing a forged magnesium alloy wheel were introduced. A new extrusion method was investigated especially. Extrusion from hollow billet was proposed in order to enhance the strength of spoke portion and reduce the maximum forming load. By means of the developed technique, the one-piece Mg wheels were produced successfully by extrusion from AZ80+ alloy. At the same time, the existing problems on the research and development of forged magnesium road wheel were analyzed. The impact testing, radial fatigue testing and bending fatigue testing results show that AZ80+ wheel can meet application requirement in automobile industry.

基金信息：the National Natural Science Foundation of China