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材料导报  2024, Vol. 38 Issue (4): 22060288-6    https://doi.org/10.11896/cldb.22060288
  金属与金属基复合材料 |
高熵硬质合金WC-AlCo0.4CrFeNi2.7的制备及表征
张明晨1, 郭瑞鹏2, 张勇1,3,4,*
1 北京科技大学新金属材料国家重点实验室,北京 100083
2 太原理工大学材料科学与工程学院,太原 030024
3 北京科技大学磁光电复合与界面科学北京市重点实验室,北京 100083
4 北京科技大学顺德研究生院,广东 佛山 528399
Preparation and Characterization of High-entropy Cemented Carbide WC-AlCo0.4CrFeNi2.7
ZHANG Mingchen1, GUO Ruipeng2, ZHANG Yong1,3,4,*
1 State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
2 College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China
3 Beijing Key Laboratory for Magneto-Photoelectrical Composite and Interface Science, University of Science and Technology Beijing, Beijing 100083, China
4 Shunde Graduate School of University of Science and Technology Beijing, Foshan 528399, Guangdong, China
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摘要 以气雾化法制备的AlCo0.4CrFeNi2.7高熵合金粉末和碳化钨(WC)分别作为粘结相和硬质相,采用放电等离子烧结制备高熵硬质合金,研究了粘结相含量和烧结温度对硬质合金的微观结构和力学性能的影响。结果表明,粘结相占比为10%(质量分数)经1 300 ℃烧结的高熵硬质合金具有最佳力学性能,硬度和断裂韧性分别为1 575HV30、9.2 MPa·m1/2。相对于粘结相含量对合金性能的影响,烧结温度的影响效果更显著;两者分别通过影响WC晶粒大小、相对密度以及有害的脆性金属间化合物的生成来影响高熵硬质合金的力学性能。
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张明晨
郭瑞鹏
张勇
关键词:  高熵合金  硬质合金  粘结相    
Abstract: AlCo0.4CrFeNi2.7 high entropy alloy (HEA) powder prepared by gas atomization and tungsten carbide (WC) was used as binder phase and hard phase, respectively, and high-entropy cemented carbide was prepared by spark plasma sintering. The effects of binder phase content and sintering temperature on the microstructure and mechanical properties of cemented carbide were studied. The results show that the high-entropy cemented carbide with a binder phase ratio of 10wt% and sintered at 1 300 ℃ has the best mechanical properties, the hardness and fracture toughness are 1 575HV30 and 9.2 MPa·m1/2 , respectively. Compare to the influence of the binder phase content on performance, the effect of sintering temperature on performance is more significant. They affect the mechanical properties of high-entropy cemented carbide by influencing the grain size, relative density and production of harmful brittle intermetallic compounds of tungsten carbide, respectively.
Key words:  high-entropy alloy    cemented carbides    binder phase
出版日期:  2024-02-25      发布日期:  2024-03-01
ZTFLH:  TG135.3  
基金资助: 粤佛联合基金重点项目(2019B1515120020);中国创新群体基金(51921001)
通讯作者:  *张勇,北京科技大学教授、博士研究生导师,教育部新世纪人才,曾获得国家自然科学二等奖,教育部自然科学一等奖、二等奖和山西省科学技术二等奖。1998年北京科技大学博士毕业,2004年被评为教授。主要从事高熵合金和非晶合金等方面的研究工作,在Science、Acta Materialia、Progress in Materials Science等期刊发表论文共200余篇。drzhangy@ustb.edu.cn   
作者简介:  张明晨,2019年6月于上海海洋大学获得学士学位,现为北京科技大学新金属材料国家重点实验室研究生,在张勇教授的指导下进行研究。主要研究方向为高熵合金。
引用本文:    
张明晨, 郭瑞鹏, 张勇. 高熵硬质合金WC-AlCo0.4CrFeNi2.7的制备及表征[J]. 材料导报, 2024, 38(4): 22060288-6.
ZHANG Mingchen, GUO Ruipeng, ZHANG Yong. Preparation and Characterization of High-entropy Cemented Carbide WC-AlCo0.4CrFeNi2.7. Materials Reports, 2024, 38(4): 22060288-6.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.22060288  或          http://www.mater-rep.com/CN/Y2024/V38/I4/22060288
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