Microstructure and Properties of Porous Magnesium Fabricated by HD+SPS
Author of the article:TIAN Xiaoying;FAN Jianfeng;ZHANG Hua;ZHANG Qiang;WU Yucheng;LIWeiguo;DONG Hongbiao;XU Bingshe
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;Department of Engineering,University of Leicester,Leicester LE17RH,UK.
Key Words：porous magnesium hd+sps pore structure compression property energy absorption
Abstract：
Porous magnesium block materials were prepared by hydrogenated dehydrogenation(HD)+discharge plasma sintering(SPS)process.The porosity,pore structure,compression and energy absorption properties of porous magnesium with different MgH2 contents were studied.The results show that the total porosity of porous magnesium is 7.5%and 17.8%respectively by HD+SPS method,and the pore size is small and the internal structure is uniform.Porous magnesium with a porosity of 17.8%has a relatively low compression yield strength of 43 MPa,high energy absorption per unit volume(34.04 MJ/m3),and a maximum energy absorption efficiency of 1.42.Compared with the porous magnesium with 7.5%porosity,the compressive stress-strain curve of porous magnesium with 17.8%porosity has a relatively low yield strength and a long stress platform stage,which is more advantageous in the application of energy-absorbing materials.
