摘要
通过一步还原法分别合成(W,Ti)C、(Ta,Nb)C、(W,Ti,Ta)C、(W,Ti,Ta,Nb)C固溶体,并以单一碳化物和固溶体的方式将Ti、Ta、Nb添加到WC-7%Co硬质合金中,考察碳化物添加方式对WC-7%Co硬质合金显微组织和机械性能的影响。结果表明,以(W,Ti,Ta,Nb)C固溶体的方式加入可提高WC-7%Co硬质合金的机械性能,其抗弯强度、维氏硬度、断裂韧性分别达到2289.9 MPa、1680 HV、9.67 MPa·m^1/2。
Several solid solutions including(W,Ti)C,(Ta,Nb)C,(W,Ti,Ta)C and(W,Ti,Ta,Nb)C were synthesized via one-step reduction method.Ti,Ta and Nb were added to WC-7%Co cemented carbides in the forms of single carbide and solid solution,respectively.The effect of carbide addition methods on the microstructure and mechanical properties of WC-7%Co cemented carbides was investigated.The results show that the mechanical properties of WC-7%Co cemented carbides can be improved by adding the solid solution of(W,Ti,Ta,Nb)C,and bending strength,Vickers hardness and fracture toughness are 2289.9 MPa,1683 HV and 9.67 MPa·m^1/2,respectively.
作者
敬正彪
陈云
冉龙姣
龚一龙
冯威
王尘茜
JNG Zheng-biao;CHEN Yun;RAN Long-jiao;GONG Yi-long;FENG Wei;WANG Chen-xi(Institute of Equipment Manufacturing,Chengdu Vocational&Technical College of Industry,Chengdu 610218,China;Chengdu Tool Research institute,Chengdu 610500,China;College of Mechanical Engineering,Chengdu University,Chengdu 610106,China)
出处
《稀有金属与硬质合金》
CAS
CSCD
北大核心
2019年第6期79-84,共6页
Rare Metals and Cemented Carbides
基金
四川省特种材料及制备技术重点实验室开放课题资助项目(szjj2017-062)
四川省科技厅应用基础重点项目(2018JY0062)
关键词
WC-CO硬质合金
一步还原法
固溶体
复合碳化物
添加方式
显微组织
机械性能
WC-Co cemented carbide
one-step reduction method
solid solution
composite carbide
addition method
microstructure
mechanical property
