电焊机2026，Vol.56Issue(2)：40-47,62,9.DOI:10.7512/j.issn.1001-2303.2026.02.04
退火温度对12Cr1MoV钢表面激光熔覆Stellite 6合金组织与性能的影响
Effect of Annealing Temperature on Microstructure and Properties of Laser Cladding Stellite 6 Alloy on 12Cr1MoV Steel Surface
摘要
Abstract
Stellite 6 alloy coatings were fabricated on 12Cr1MoV steel via laser cladding and subsequently annealed at dif-ferent temperatures to investigate the effects of annealing on their microstructure and properties.The results indicate that the grain size of the clad layer increases with rising annealing temperature.While low-temperature annealing(450℃)had little influence on the phase composition,annealing at 650℃for 2 h promoted the transformation of the metastable FCC γ-Co phase into the stable HCP ε-Co phase,simultaneously improving microstructural homogeneity and the distribution of car-bides(e.g.,Cr7C3,Cr23C6).However,higher annealing temperatures led to coarsening of both the microstructure and carbide precipitates,accompanied by enhanced diffusion of Fe from the substrate into the coating.Consequently,the hardness and wear resistance of the clad layer deteriorated with increasing annealing temperature.The coating annealed at 650℃exhib-ited the best corrosion performance in 3.5 wt.%NaCl solution,reflected by the highest corrosion potential(-0.284 V)and the lowest corrosion current density(9.967×10⁻7 A/cm2).Further increase in annealing temperature significantly degraded the corrosion resistance.关键词
激光熔覆/12Cr1MoV钢/Stellite 6/退火温度/微观组织/力学性能/耐腐蚀性能Key words
laser cladding/12Cr1MoV steel/Stellite 6/annealing temperature/microstructure/mechanical properties/corro-sion resistance分类
矿业与冶金引用本文复制引用
符恒,顾玉芬,石玗,王全博..退火温度对12Cr1MoV钢表面激光熔覆Stellite 6合金组织与性能的影响[J].电焊机,2026,56(2):40-47,62,9.基金项目
中央引导地方科技发展资金项目(24ZYQA054) （24ZYQA054）
