Cavitation erosion behavior of WC coatings on CrNiMo stainless steel by laser alloying

作     者：Xiao-bin Zhang Chang-sheng Liu Xiao-dong Liu Jiang Dong Bo Yu 

作者机构：School of Materials and Metallurgy Northeastern University Shenyang 110004 China School of Material Science and Engineering Chongqing Institute of Technology Chongqing 400050 China Shenyang Research Institute of Foundry Shenyang 110022 China 

出 版 物：《International Journal of Minerals,Metallurgy and Materials》 (矿物冶金与材料学报（英文版）)

年 卷 期：2009年第16卷第2期

页      面：203-207页

核心收录：

学科分类：080503[工学-材料加工工程] 08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

主　　题：martensite stainless steel laser surface alloying cavitation erosion WC 

摘      要：The WC powder was precoated on the surface of CrNiMo stainless steel and then made into an alloying layer by using the laser alloying technique. Phases in the layers were investigated by X-ray diffraction （XRD） analysis and surface morphologies after cavitation erosion were observed with the help of scanning electron microscopy （SEM）. The cavitation erosion behavior of the CrNiMo stainless steel and WC laser alloying layer in distilled water was tested with the help of ultrasonic vibration cavitation erosion equipment. The results showed that the thickness of the laser alloying layer was about 0.13 mm. The layer had a dense microstructure, metallurgically bonded to the substrate, and no crack had been found. The cavitation erosion mass loss rate of the laser alloying layer was only 2/5 that of the CrNiMo stainless steel. The layer had better cavitation resistance properties because of its metallurgical combination and the strengthening effects of the precipitate phases.