Microstructure and Wear Properties of Ni-W-Si Coatings by Laser Cladding

摘要：

　　Ni-W-Si intermetallic composite coatings consisting of primary tungsten dendrites and eutectic W/WSi2 were fabricated on 45 steel by laser cladding process using Ni-W-Si powers.The microstructure and composition of the coatings was characterized by SEM, XRD and EDS.The effect of the W content on the hardness and wear resistance of coatings was investigated.Results indicate that attributed to the high hardness and toughness of tungsten dendrites and fine and compact eutectic W/WSi2, coatings had high hardness (the highest being 950HV) and the wear resistance was elevated to 4~8 times higher.

关键词： Coating Laser cladding,Microhardness,Microstructure

作者: Xiaopeng Liu Peilei Zhang Hua Yan Yunlong Lu Zhishui Yu Chonggui Li Qinghua Lu

作者单位: School of Materials Engineering,Shanghai University of Engineering Science,Shanghai 201620,China;Research & Development Center for Key Technologies of Intelligent Equipments of Ultra-Intense Laser Processing,Shanghai 201620,China

会议类型: 国际会议

会议名称: 2014 International Symposium on Structural Integrity,ISSI2014(2014国际结构完整性学术会议)

会议地点: 兰州

会议语种:英文

页码: 421-426

在线出版日期: 2014-08-20（万方平台首次上网日期，不代表论文的发表时间）