再结晶对FeCoCrNiMn高熵合金组织及耐蚀性的影响

Effect of Recrystallization on Microstructures and Corrosion Resistance of FeCoCrNiMn High Entropy Alloy

摘要: 采用激光沉积制备了FeCoCrNiMn高熵合金，研究了再结晶对其组织和耐蚀性能的影响。利用XRD、OM和电化学工作站分析了相组成、微观组织和耐蚀性。结果表明，激光沉积制备的FeCoCrNiMn高熵合金为FCC单相结构，其经冷轧变形50%后在900℃保温1 h开始发生再结晶，在1000℃保温1 h时再结晶完成。经1000℃保温1 h再结晶处理的FeCoCrNiMn高熵合金的耐蚀性优于激光沉积制备的FeCoCrNiMn高熵合金。

Abstract: FeCoCrNiMn high entropy alloy was prepared by laser deposition, and the effect of recrystallization on its microstructure and corrosion resistance was studied. The phase composition, microstructure and corrosion resistance were analyzed by XRD, OM and electrochemical workstation. The results show that the microstructure of laser deposited FeCoCrNiMn high entropy alloy is single FCC phase. The laser deposited FeCoCrNiMn high entropy alloy begins to recrystallize at 900 ℃ for 1 h after 50% cold rolling deformation, and completes recrystallization at 1000 ℃ for 1 h. The corrosion resistance of FeCoCrNiMn high entropy alloy recrystallized at 1000 ℃ for 1 h is better than that of FeCoCrNiMn high entropy alloy prepared by laser deposition.