WC-10AlCoCrFeNi-La_(2)O_(3)硬质合金刀具切削性能研究  

Research on the Cutting Performance of WC-10AlCoCrFeNi-La_(2)O_(3) Cemented Carbide Tools

作　　者：成浩 唐思文 付洛辉 卢继 熊峰 高美连 刘骞[2] CHENG Hao;TANG Siwen;FU Luohui;LU Ji;XIONG Feng;GAO Meilian;LIU Qian(Hunan Provincial Key Laboratory of Health Maintenance for Mechanical Equipment,Hunan University of Science and Technology,Xiangtan 411201,Hunan,China;Engineering Research Center of Ministry of Education for Deep-sea and Deep-earth Mineral Resources Development Technology and Equipment,Hunan University of Science and Technology,Xiangtan 411201,Hunan,China)

机构地区：[1]湖南科技大学机械设备健康维护湖南省重点实验室,湖南湘潭411201 [2]湖南科技大学深海深地矿产资源开发技术与装备教育部工程研究中心,湖南湘潭411201

出　　处：《中国钨业》2024年第4期77-85,共9页China Tungsten Industry

基　　金：国家自然科学基金(52275424);湖南省自然科学基金面上项目(2023JJ30257)。

摘　　要：为探究WC-HEA硬质合金切削性能,本研究以AlCoCrFeNi为黏结相,分析了高熵合金与La_(2)O_(3)对硬质合金切削力、切削温度的影响;阐述了WC-10AlCoCrFeNi-La_(2)O_(3)刀具的磨损形貌与磨损机制,结果表明:切削速度为180 m/min时,相对YG8硬质合金刀具,WC-HEA0L主切削力、进给抗力和背向力分别下降6.43%、13.66%、17.08%;WC-HEA0.075L主切削力、进给抗力和背向力分别下降7.44%、16.35%、20.92%。WC-HEA0L、WC-HEA0.075L刀具切削温度分别下降2.95%、8.58%;WC-HEA0L、WC-HEA0.075L刀具切削时间可分别延长12.5%、21.25%;高熵合金刀具能有效减弱切屑与刀具间的元素扩散,磨损机制为黏结磨损与氧化磨损;添加适量La_(2)O_(3)能进一步减缓刀屑元素扩散速率,加强刀具表面强度,延长使用寿命。To investigate the cutting performance of WC-HEA cemented carbide,this study uses AlCoCrFeNi as the binder phase and analyzes the influence of high-entropy alloy (HEA) and La_(2)O_(3) on the cutting forces and cutting temperatures of the cemented carbide.It elucidates the wear morphology and wear mechanisms of WC-10AlCoCrFeNi-La_(2)O_(3) tools.The results show that at a cutting speed of 180 m/min,compared to YG8 cemented carbide tools,the three-directional forces of WC-HEA0L decrease by 6.43%,13.66%,and 17.08%respectively,and those of WC-HEA0.075L decrease by 7.44%,16.35%,and 20.92%respectively.The cutting temperatures of WC-HEA0L and WC-HEA0.075L tools decrease by 2.95%and 8.58%respectively.The cutting durations of WC-HEA0L and WC-HEA0.075L tools can be extended by 12.5%and 21.25%respectively.HEA tools can effectively weaken the elemental diffusion between the chip and the tool,with wear mechanisms being adhesive wear and oxidative wear.Adding an appropriate amount of La_(2)O_(3) can further slow down the elemental diffusion rate between the tool and chip,strengthen the surface hardness of the tool,and extend its service life.

关 键 词：AlCoCrFeNi La_(2)O_(3) 硬质合金 磨损性能 切削性能 

分 类 号：TG711[金属学及工艺—刀具与模具]