材料工程Issue(3)：50-54,5.
激光熔覆Fe-Ti-V-Cr-C合金涂层的微观组织和性能
Microstructure and Property of Laser Cladding Fe-Ti-V-Cr-C Alloy Coatings
摘要
Abstract
Fe-Ti-V-Cr-C hardfacing coatings were produced by laser cladding, the influence of ferrochromium on the microstructure and property of the coatings was investigated by optical microscope (OM), X-ray diffraction (XRD), scanning electron microscope (SEM), micro-hardness tester and wear tester. The results show that the stable carbide hard phases are generated through in-situ reaction between ferrotitanium, ferrovanadium, ferrochromium and graphite. The multiple TiC-VC presented graininess or efflorescent and intermittent Cr7 C3 emerged reticulation evenly disperse in the coating, which largely increase the micro-hardness and wear resistance of the coating. The micro-hardness of the coatings increases with increasing ferrochromium content. The coating, which contented 12％ (mass fraction) ferrochromium, holds compact microstructure and excellent wear resistance. Under the same condition, its mass loss is only one seventh of that of the substrate. However, when the ferrochromium content is beyond 15 ％, coarse Ledeburite which may cause crack and failure of coating is found.关键词
激光熔覆/TiC-VC/Cr7C3/显微硬度/耐磨性Key words
laser cladding/ TiC-VC/ Cr7C3/ micro-hardness/ wear resistance分类
矿业与冶金引用本文复制引用
王晓荣,王新洪,杜宝帅,王承伟..激光熔覆Fe-Ti-V-Cr-C合金涂层的微观组织和性能[J].材料工程,2011,(3):50-54,5.基金项目
山东省科技攻关计划项目(06GG3203009) （06GG3203009）
