焊管2026，Vol.49Issue(5)：8-14,7.DOI:10.19291/j.cnki.1001-3938.2026.05.002
熔覆速度对AlCoCrFeNi高熵合金等离子熔覆涂层组织和性能的影响
Influence of Cladding Speed on Microstructure and Properties of AlCoCrFeNi High-entropy Alloy by Plasma Cladding Coatings
摘要
Abstract
To investigate the effect of plasma cladding speed on the microstructure and properties of AlCoCrFeNi high-entropy alloy coatings,AlCoCrFeNi high-entropy alloy plasma cladding coatings were prepared on the surface of 35CrMo steel at cladding speeds of 420 mm/min,300 mm/min,and 180 mm/min,respectively.The microstructure and properties of the coatings obtained at different cladding speeds were characterized and tested using stereomicroscope,metallographic microscope,X-ray diffractometer,and microhardness tester.Results indicate that as the cladding speed decreases,the cross-sectional dimensions of the cladding layer gradually increase,while the dilution rate gradually decreases.In each cladding layer,planar,columnar,dendritic crystals,and equiaxed crystals appear sequentially from the bottom to the top,and the grain size at each position increases with the decrease in cladding speed.Each cladding layer's microhardness and corrosion resistance are significantly superior to those of the 35CrMo substrate.As the cladding speed decreases,the microhardness of the cladding layer gradually decreases,while the corrosion resistance gradually increases.关键词
高熵合金/等离子熔覆/熔覆速度/显微组织/耐腐蚀性能Key words
high-entropy alloy/plasma cladding/cladding speed/microstructure/corrosion resistance分类
矿业与冶金引用本文复制引用
张明伟,邓智杰,肖行,杜泳成..熔覆速度对AlCoCrFeNi高熵合金等离子熔覆涂层组织和性能的影响[J].焊管,2026,49(5):8-14,7.基金项目
四川省省级大学生创新创业训练计划资助项目"B元素对AlCoCrFeNi2.1共晶高熵合金激光熔覆涂层组织及性能的调控研究"(项目编号S202510615203). （项目编号S202510615203）
