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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
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- DOI:
- 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
- 作者单位:
- 广东省材料与加工研究所 广东省金属强韧化技术与应用重点实验室
Guangdong Institute of Materials and Processing,Guangzhou 510650,China;Guangdong Key Laboratory of Metal Strengthening and Toughening Technology and Application,Guangzhou 510650,China
- 关键词:
- 铸造烧结 (TI,W)C 铁基复合材料 显微组织 耐磨性
cast sintering technology (Ti,W)C iron-based composites microstructure wear resisting property
- 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、Fe3W3C、(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、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.