Room-temperature mechanical properties of WSi2/MoSi2 composites
来源期刊：Rare Metals2002年第4期
论文作者：ZHANG Houan, CHEN Pin, WANG Mengjun, and LIU Xinyu Institute of Material Surface Engineering, Xiangtan Polytechnic University, Xiangtan , China Department of Material Science and Engineering, Central South University, Changsha , China Research Center of advanced Material, Guilin Institute of Electric Technology, Guilin , China
文章页码：304 - 307
摘 要：<正>Five kinds of WSi2/MoSi2 composites were successfully prepared by mechanical alloying, IP and high tempera-ture sintering techniques. And their hardness and fracture toughness were measured by the Vickers indentation fracturemode through an Hv-10A type sclerometer. The microstructure and morphology were investigated by a JSM-56001V scan-ning electron microscope. Results show that the addition of 50% WSi2 （in mole fraction） has remarkable hardening andtoughening effects on the MoSi2 matrix, whose hardness value and fracture toughness value are increased about 60% and86%, respectively. For WSi2/MoSi2 composite, the hardening mechanisms are fine-grain and the second phase particlesstrengthening, and the toughening mechanisms include fine-grain, grain drawing, crack deflection, microbridge and bowingtoughening.
摘要：<正>Five kinds of WSi2/MoSi2 composites were successfully prepared by mechanical alloying, IP and high tempera-ture sintering techniques. And their hardness and fracture toughness were measured by the Vickers indentation fracturemode through an Hv-10A type sclerometer. The microstructure and morphology were investigated by a JSM-56001V scan-ning electron microscope. Results show that the addition of 50% WSi2 （in mole fraction） has remarkable hardening andtoughening effects on the MoSi2 matrix, whose hardness value and fracture toughness value are increased about 60% and86%, respectively. For WSi2/MoSi2 composite, the hardening mechanisms are fine-grain and the second phase particlesstrengthening, and the toughening mechanisms include fine-grain, grain drawing, crack deflection, microbridge and bowingtoughening.
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