Study on Mechanical Behavior of Nanocrystalline Pure Magnesium Prepared by HDDR and Hot-pressing Sintering
Author of the article:GAO Jing;FAN Jianfeng;GUO Huijun;TIAN Xiaoying
Author's Workplace：Key Laboratory of Interface Science and Engineering in Advanced Materials Ministry of Education,Taiyuan University of Technology, Taiyuan 030024, China;Shanxi Key Laboratory of Advanced Magnesium Based Materials, Taiyuan University of Technology, Taiyuan 030024, China;School of Materials Science and Engineering, Taiyuan University of Technology,Taiyuan 030024, China
Key Words：nanocrystalline pure magnesium HDDR hot press sintering mechanical properties
Abstract：
On the basis of obtaining nanocrystalline pure magnesium powder after hydrogenation and dehydrogenation, orthogonal test scheme was adopted to explore the optimal hot-pressing sintering process parameters, and combined with hot extrusion process, large nanocrystalline pure magnesium blocks and bars with average grain size of 15 nm and uniform density were obtained. The results show that the tensile yield strength and the compressive yield strength of nanocrystalline pure magnesium bar reach 265 MPa and 178 MPa at room temperature, respectively.
