摘要
利用激光熔覆技术制备了AlCrCoFeNiMoTi0.75Si0.25高熵合金涂层刀具,研究了激光快速凝固和经过1 000℃退火处理的AlCrCoFeNiMoTi0.75Si0.25高熵合金涂层微观组织和硬度、摩擦磨损性能,并比较了普通高速钢及高熵合金涂层刀具的切削加工性能。结果表明:激光熔覆AlCrCoFeNiMoTi0.75Si0.25高熵合金涂层的主要相结构为bcc相,涂层具有较好的高温稳定性。激光熔覆高熵合金涂层刀具表面硬度高,摩擦因数小,断屑效果好,被加工材料表面光洁度高。
AlCrCoFeNiMoTi0.75Si0.25 high-entropy alloy coated cutting tools was prepared by laser cladding. The microstructure, hardness, friction and wear properties of the AlCrCoFeNiMoTi0.75Si0.25 high-entropy alloy coatings prepared by laser rapid solidification and annealing treatment at 1 000 ℃ were studied. The machinability of the high-speed-steel tools and high-entropy alloy coated tools was compared. Results show that the main alloy structure of the coating is a body centered cubic （BCC） and the coating performs high temperature stability. The high-entropy coated cutting tool is characterized by higher hardness, lower friction coefficient, better chip breaker, and better surface finish of the machined materials.
出处
《中国表面工程》
EI
CAS
CSCD
北大核心
2013年第4期27-31,共5页
China Surface Engineering
基金
北京科技大学新金属材料国家重点实验室开放基金(2010Z-05)
关键词
高熵合金
激光熔覆
涂层刀具
高速切削
high-entropy alloy laser cladding coated cutting tools high speed cutting
