(1. College of Materials Science and Engineering, Chongqing University, Chongqing 400045，China) (2.National Engineering Research Center for Magnesium Alloys, Chongqing University, Chongqing 400045，China)
It is of great importance to increase the modulus of magnesium matrix materials for enlarging its application. At present, the research and development of high-modulus magnesium matrix materials have received much attention all over the world, and consequently many researches have been carried out. In the paper, the latest research progress of high-modulus magnesium matrix materials are reviewed. The effect of process conditions, alloying and composited process on improving the elastic modulus of magnesium alloys are illustrated. The internal mechanism of elastic modulus improvement and mechanical property of magnesium matrix materials are analyzed and introduced respectively. A certain amount of alloying elements are added to the magnesium alloys by alloying process, and various reinforcements such as ceramic particles, whisker or fiber reinforcements are added to the magnesium matrix by composited process, in order to significantly increase the elastic modulus of magnesium matrix materials. Finally, the main problems existing in the study and the future research direction of high-modulus magnesium matrix materials are discussed and proposed respectively.