摘要
采用激光熔覆方法制备Al Co Cr Fe Ni Ti0.5高熵合金涂层,研究了激光工艺参数对涂层成形及组织性能的影响。结果表明:激光功率为3.5 k W,扫描速度为300 mm/min,光斑直径5 mm时,单道熔覆涂层表面成形性最好。熔覆层主要为BCC结构固溶体,并且有Al80Cr13Co7和Al95Fe4Cr复杂相析出,涂层平均硬度已达到989 Hv。
AlCoCrFeNiTi high-entropy alloys coatings were prepared by laser cladding. And the effect of laser parameters on the forming, microstructure and property of the coatings were investigated in the thesis. The resuits show that the quality of surface coating is good with smooth surface and compact structure when the laser power is 3.5 kW and scanning speed is 300 mm/min. The coating has BCC structure solid solution phase with Al80Cr13Co7 and Al95Fe4Cr complicated phases. The average hardness value is 989 HV when the laser power is 3.5 kW.
出处
《辽宁科技大学学报》
CAS
2015年第3期170-173,共4页
Journal of University of Science and Technology Liaoning
基金
辽宁省科学技术计划资助项目(2012415026)
国家级大学生创新训练项目(201310146014)
关键词
高熵合金
涂层
激光熔覆
组织结构
high-entropy alloy
coating
laser cladding
microstructure
