(Ti,W)C Surface Reinforced Iron Matrix Composites by Cast Sintering Technology
Author of the article:DONG Xiaorong;ZHENG Kaihong;WANG Juan;LUO Tiegang;WANG Haiyan
Author's Workplace：Guangdong Institute of Materials and Processing,Guangzhou 510650,China;Guangdong Key Laboratory of Metal Strengthening and Toughening Technology and Application,Guangzhou 510650,China
Key Words：cast sintering technology (Ti,W)C iron-based composites microstructure wear resisting property
Abstract：The reinforcement was prepared by sintering compact of mixed ferrotungsten,titanium,graphite,high-carbon chrome alloy,iron powders,and(Ti,W)C/Fe composite was synthesized by cast sintering technology.The microstructure of composite was analyzed by scanning electron microscopy and X-ray diffraction.The results showed that the reinforcement was consisted of α-Fe、Fe3W3C、(Ti,W)C and a few of TiC.(Ti,W)C particles are spherical with the size below 1μm.The hardness of the reinforcement is 59.3 HRC.The three-body wear resisting property of the composite is 1.2 times of high-chromium cast-iron.
