激光熔覆原位自生TiC-VC复合增强铁基合金层的研究

山东大学学报(工学版)

激光熔覆原位自生TiC-VC复合增强铁基合金层的研究

赵冠琳, 邹增大, 王新洪, 杜宝帅

山东大学材料科学与工程学院, 山东济南 250061

收稿日期:2007-08-30 修回日期:1900-01-01 出版日期:2008-04-16 发布日期:2008-04-16
通讯作者: 赵冠琳

In situ synthesis of TiC-VC particles reinforced Fe-basedMMC coatings produced by laser cladding

ZHAO Guan-lin, ZOU Zeng-da, WANG Xin-Hong, DU Bao-shuai

School of Materials Science and Engineering, Shandong University, Jinan 250061, China

Received:2007-08-30 Revised:1900-01-01 Online:2008-04-16 Published:2008-04-16
Contact: ZHAO Guan-lin

摘要/Abstract

摘要： 利用钛铁、钒铁、石墨等组分,采用5kW横流CO₂激光器在低碳钢板上熔覆制备出原位自生TiC-VC复合碳化物颗粒增强Fe基合金层.利用金相显微镜、X射线衍射仪、电子探针及滑动磨损试验机,研究了合金熔覆层的显微组织及性能.研究结果表明,通过钛铁、钒铁与石墨之间的反应,可以得到TiC-VC复合碳化物增强相,细小的TiC-VC复合碳化物颗粒弥散分布在Fe基体之中,合金熔覆层的耐磨性在一定范围内随增强颗粒的增加而提高.

关键词: 激光熔覆, 原位自生, TiC-VC复合颗粒

Abstract: Using a 5kW CO₂ laser, in situ synthesis of TiC-VC particles reinforced Fe-based alloy composite coatings were put forth by using ferrotitanium, ferrovanadium and graphite. The microstructure and properties of the composite coatings were investigated by optical microscopy, X-ray diffractometer (XRD), electron probe microanalyzer (EPMA) and a skimming wear machine. Results indicate that TiC-VC particles can be produced by direct metallurgical reaction between ferrotitanium, ferrovanadium and graphite during the laser cladding process. It was also found that fine TiC-VC particles disperse in the matrix. The wear-resisting property of the higher TiC-VC particles coating is larger than the lower ones in certain areas.

Key words: in situ synthesis, TiC-VC particles , laser cladding

中图分类号:

TB331

赵冠琳,邹增大,王新洪,杜宝帅 . 激光熔覆原位自生TiC-VC复合增强铁基合金层的研究[J]. 山东大学学报(工学版), 2008, 38(2): 6-9 .

ZHAO Guan-lin,ZOU Zeng-da,WANG Xin-Hong,DU Bao-shuai . In situ synthesis of TiC-VC particles reinforced Fe-basedMMC coatings produced by laser cladding[J]. JOURNAL OF SHANDONG UNIVERSITY (ENGINEERING SCIENCE), 2008, 38(2): 6-9 .

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