Microstructure and Abrasive Mechanism of Surfacing Welding Based on TiC-VC Particle
来源期刊：材料热处理学报2004年第5期
论文作者：LOU Song-nian LU Xue-qin ZOU Zeng-da YANG Shang-lei
关键词：Surfacing welding; Abrasive mechanism; TiC-VC particle;
摘 要：Ultrahard titanium and vanadium carbides (TiC-VC) particles are combined among ferrotitanium (Fe-Ti),ferrovanadium (Fe-V), graphite, rutile, etc. by means of high temperature arc metallurgic reaction in deposited metal. The microstructure, properties and wear mechanism of surfacing metal were systemically studied. The results show carbides particles are embedded in Fe matrix, Microstructure of which is lath martensite. The carbides mixed in the lath martensite provide a combination of good hardness and toughness. The residual austenite transforms to martensite, which is caused by the press stress, strengthens the matrix and releases the stress. The surface layers have high abrasive resistance and cracking resistance. The integration of dispersedly distributed carbides, lath martensite and residual austenite of the surface layer results in satisfactory wear resistance.
LOU Song-nian1，LU Xue-qin1，ZOU Zeng-da2，YANG Shang-lei3
(1.Institute of Welding, Shanghai Jiaotong University, Shanghai 200030, China;
2.School of materials science and technology, Shandong University, Jinan 250061, China;
3.Institute of Welding, Shanghai Jiaotong University, Shanghai 200030, China ;
4.Institute of Polymer, Qingdao University of Science and Technology, Qingdao 266042, China)
摘要:Ultrahard titanium and vanadium carbides (TiC-VC) particles are combined among ferrotitanium (Fe-Ti),ferrovanadium (Fe-V), graphite, rutile, etc. by means of high temperature arc metallurgic reaction in deposited metal. The microstructure, properties and wear mechanism of surfacing metal were systemically studied. The results show carbides particles are embedded in Fe matrix, Microstructure of which is lath martensite. The carbides mixed in the lath martensite provide a combination of good hardness and toughness. The residual austenite transforms to martensite, which is caused by the press stress, strengthens the matrix and releases the stress. The surface layers have high abrasive resistance and cracking resistance. The integration of dispersedly distributed carbides, lath martensite and residual austenite of the surface layer results in satisfactory wear resistance.
关键词:Surfacing welding; Abrasive mechanism; TiC-VC particle;
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