激光技术Issue(1)：132-136,5.DOI:10.7510/jgjs.issn.1001-3806.2014.01.029
激光堆焊单道 Co 基合金与 WC 混合粉末的性能研究
Characteristics of clad layer of mixture of stellite-6 and tungsten carbide powder by means of single-pass laser cladding
摘要
Abstract
In order to improve the wear resistance of the clad layer,the powder mixture of stellite-6 and tungsten carbide (WC)in the range of 0 ~0.47 mass fraction of WC was deposited on mild steel plates by CO2 laser cladding system.The phase constitution,microstructure,hardness and wear resistance of the clad layer were studied with an X-ray diffractometer,energy dispersive spectroscopy,scanning electron microscope,laser microscope,Vickers hardness tester and wear tester.According to the analyzed results,the microstructure of the clad layer consists of hypoeutectic structure and undissolved tungsten carbides dispersed in the matrix of the Co-based alloy.The Vickers hardness increases with the increase of WC weight fraction.On the other hand,the crack sensitivity of the laser clad layer is low.关键词
激光技术/激光堆焊/亚共晶组织/裂纹敏感性/耐磨性能Key words
laser technique/laser cladding/hypoeutectic structure/crack sensitivity/wear resistance分类
矿业与冶金引用本文复制引用
徐国建,刘爽,杭争翔,于恩洪,李永波,范荣博..激光堆焊单道 Co 基合金与 WC 混合粉末的性能研究[J].激光技术,2014,(1):132-136,5.基金项目
辽宁省自然科学基金资助项目 （）
