沈阳工业大学学报2017，Vol.39Issue(5)：491-495,5.DOI:10.7688/j.issn.1000-1646.2017.05.03
W对Co基合金熔覆层组织和耐锌蚀性能的影响
Effect of W on microstructure and zinc corrosion resistance of Co-based alloy cladding layers
摘要
Abstract
In order to improve the service life of key components in the hot dip galvanizing production line and save the cost of hot dip galvanizing, two Co-based alloy cladding layers with different compositions were prepared on the surface of 316L stainless steel with the semiconductor laser. The microstructural morphology, composition, phase structure, microhardness and zinc corrosion resistance of laser cladding layers were studied, respectively. The results show that the addition of W element makes the grains of cladding layer refine. The microstructure of laser cladding layer is mainly composed of γ-Co solid solution, Co3 Mo2 Si and Cr7 C3 phases. Meanwhile, a small amount of Co6 W6 C phase forms. The average hardness of cladding layer reaches 986 HV, which is 114 HV higher than that of Co-based alloy cladding layer without the W element, and is about 4. 5 times as that of 316L stainless steel. Compared with the orginal Co-based alloy cladding layer, the Co6 W6 C phase sparsely distributes in the Co-based alloy cladding layer with W element, which significantly improves the zinc corrosion resistance of cladding layer.关键词
热镀锌/钴基合金熔覆层/显微组织/成分/相结构/晶粒细化/显微硬度/耐锌蚀性能Key words
hot dip galvanizing/Co-based alloy cladding layer/microstructure/composition/phase structure/grain refinement/microhardness/zinc corrosion resistance分类
矿业与冶金引用本文复制引用
张松,何斯文,关锰,崔文东,谭俊哲..W对Co基合金熔覆层组织和耐锌蚀性能的影响[J].沈阳工业大学学报,2017,39(5):491-495,5.基金项目
国家自然科学基金资助项目(51271126) （51271126）
国家重点研发计划资助项目(2016YFB1100204,2013ZX060002-002) （2016YFB1100204,2013ZX060002-002）
沈阳市科技局计划项目(F16-032-0-00). （F16-032-0-00）
