摘要
通过激光熔覆技术在工具钢表面成功制备(FeCrCo/Ni)_5-SiTiNbMoW高熵合金涂层,并采用带有能谱仪的扫描电镜(SEM/EDS)、X射线衍射仪(XRD)、显微硬度计对涂层组织、成分、物相和硬度进行分析测试。结果表明,(FeCrCo)_5-SiTiNbMoW涂层含有BCC主相、少量MC相及Laves相,(FeCrNi)_5-SiTiNbMoW涂层含有FCC主相及少量MC相、Laves相;两种涂层组织均以树枝晶为主,(FeCrNi)_5-SiTiNbMoW涂层组织中同时还出现共晶组织。(FeCrCo)_5-SiTiNbMoW高熵合金涂层的显微硬度略高于(FeCrNi)_5-SiTiNbMoW高熵合金涂层。
The （FeCrCo/Ni）5-SiTiNbMoW high-entropy alloy coatings were successfully prepared on the surface of the tool steel by laser cladding technology. The microstructure,composition, phase and hardness of the coatings were analyzed and tested by SEM/EDS, XRD and microhardness tester. The results show that the （FeCrCo）5-SiTiNbMoW coating contains BCC main phase,and a small amount of MC phase and Laves phase. The （FeCrNi）5-SiTiNbMoW coating contains FCC main phase and a small amount of MC phase and Laves phase. The two coatings are dominated by dendrites,while the （FeCrNi）5-SiTiNbMoW coating also has eutectic microstructure. The microhardness of the （FeCrCo）5-SiTiNbMoW high-entropy alloy coating is slightly higher than that of the （FeCrNi）5-SiTiNbMoW high-entropy alloy coating.
作者
王茵
尚晓娟
田兴强
郭亚雄
汪震
陈佳
WANG Yin;SHANG Xiao-juan;TIAN Xing-qiang;GUO Ya-xiong;WANG Zhen;CHEN Jia(Department of Mechanical and Electronic Engineering,Guizhou Communication Vocational College,Guiyang 550008,China;College of Materials and Metallurgy,Guizhou University,Guiyang 550025,China)
出处
《稀有金属与硬质合金》
CAS
CSCD
北大核心
2018年第5期30-36,共7页
Rare Metals and Cemented Carbides
基金
国家自然科学基金项目(51671061)
贵州省科技计划项目(黔科合平台人才[2017]5788)
贵州省科技计划项目(黔科合基础[2016]1024)
贵州省高层次创新型人才培养项目(黔科合人才[2015]4009)
贵州省工业攻关项目(黔科合GZ字[2015]3022)
关键词
高熵合金
涂层
激光熔覆
显微组织
物相
硬度
high entropy alloy
coating
laser cladding
microstructure
phase
hardness
