有色金属科学与工程2025，Vol.16Issue(5)：718-725,8.DOI:10.13264/j.cnki.ysjskx.2025.05.006
不同烧结温度对WC-10CuFeNiCrCo硬质合金微观组织结构及力学性能的影响
Effect of different sintering temperatures on microstructure and mechanical properties of WC-10CuFeNiCrCo hard alloy
摘要
Abstract
CuFeNiCrCo high-entropy alloy powder,as a binder,was sintered for 10 hours by high-energy ball milling with WC powder.Then,WC-10%CuFeNiCrCo hard alloys were prepared by discharge plasma sintering.The effects of different sintering temperatures(1 350℃,1 420℃,and 1 480℃)on the microstructure and mechanical properties of WC-10CuFeNiCrCo hard alloys were studied.The results indicate that the solid-phase rapid densification time of HEA bonding phase alloys is earlier than that of Co bonding phase alloys,and no macroscopic pores,carbon-deficient phases,or free carbon are observed in WC-10CuFeNiCrCo hard alloys prepared at different sintering temperatures.With the increase of sintering temperature,the grain size of WC-10CuFeNiCrCo hard alloy increases first and then decreases.The lath-like coarse WC grains appear in the sintered alloy at 1 480℃,which reduces the peak strength of WC(0001)and shifts to a low angle.At a sintering temperature of 1350℃,the comprehensive performance of WC-10CuFeNiCrCo hard alloy is superior to that of WC-10Co alloy.The presence of coarse WC grains causes crack deflection and bridging during the crack propagation process,effectively hindering the diffusion and propagation of cracks.关键词
CuFeNiCrCo/高熵合金黏结剂/硬质合金/力学性能Key words
CuFeNiCrCo/high-entropy alloy binder/hard alloy/mechanical property分类
金属材料引用本文复制引用
谢远武,羊求民,甘真,胡庆,林丽萍,钟伟,唐彦渊,陈丽勇..不同烧结温度对WC-10CuFeNiCrCo硬质合金微观组织结构及力学性能的影响[J].有色金属科学与工程,2025,16(5):718-725,8.基金项目
国家自然科学基金资助项目(511XXX18,52264052) （511XXX18,52264052）
江西省自然科学基金资助项目(20224BAA204035) （20224BAA204035）
赣州市重点研发计划资助项目(2023PGX16988) （2023PGX16988）
赣鄱俊才-江西省主要学科学术和技术带头人资助项目(20243BCE51044) （20243BCE51044）
