铸造烧结法制备(Ti,W)C表面增强铁基复合材料  

(Ti,W)C Surface Reinforced Iron Matrix Composites by Cast Sintering Technology

作　　者：董晓蓉 郑开宏 王娟 罗铁钢 王海艳 DONG Xiaorong;ZHENG Kaihong;WANG Juan;LUO Tiegang;WANG Haiyan(Guangdong Institute of Materials and Processing,Guangzhou 510650,China;Guangdong Key Laboratory of Metal Strengthening and Toughening Technology and Application,Guangzhou 510650,China)

机构地区：[1]广东省材料与加工研究所,广东广州510650 [2]广东省金属强韧化技术与应用重点实验室,广东广州510650

出　　处：《铸造技术》2021年第8期679-682,共4页Foundry Technology

基　　金：广东省协同创新与平台环境建设专项(2014B050503007);广州市产学研协同创新(201508010061);广东省科学院科研基础条件建设专题(2016GDASPT-0320);广东省产学研合作项目(2016B090918072);广东省科学院院属骨干科研机构创新能力建设专项项目(2017GDASCX-0117)。

摘　　要：以钨铁粉钛粉、石墨粉、高碳铬铁粉、铁粉等为原料进行粉末冶金烧结制备增强坯体,利用铸造烧结法制备(Ti,W)C表面增强铁基复合材料,利用X射线衍射、扫描电镜等对制得的试样进行组织及成分分析。结果表明:热处理后,复合材料增强表面的相组成为α-Fe、Fe_(3)W_(3)C、(Ti,W)C和少量TiC;硬质相(Ti,W)C颗粒近球形,粒径小于1μm。增强表面层与基体结合良好,其洛氏硬度达到59.3HRC;经三体磨损性能测试,复合材料抗磨损性能是高铬铸铁基体的1.2倍。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、Fe_(3)W_(3)C、(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.

关 键 词：铸造烧结 (TI W)C 铁基复合材料 显微组织 耐磨性 

分 类 号：TB333[一般工业技术—材料科学与工程]