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材料工程  2019, Vol. 47 Issue (7): 106-111    DOI: 10.11868/j.issn.1001-4381.2017.001519
  研究论文 本期目录 | 过刊浏览 | 高级检索 |
CeO2掺杂对AlCoCrCuFe高熵合金的组织结构与摩擦磨损性能的影响
马明星1, 王志新1, 梁存1, 周家臣1, 张德良2, 朱达川3
1. 中原工学院 材料与化工学院, 郑州 450007;
2. 东北大学 材料科学与工程学院, 沈阳 110819;
3. 四川大学 材料科学与工程学院, 成都 610065
Effect of CeO2 doping on microstructure, friction and wear properties of AlCoCrCuFe high-entropy alloys
MA Ming-xing1, WANG Zhi-xin1, LIANG Cun1, ZHOU Jia-chen1, ZHANG De-liang2, ZHU Da-chuan3
1. School of Materials and Chemical Engineering, Zhongyuan University of Technology, Zhengzhou 450007, China;
2. School of Materials Science and Engineering, Northeastern University, Shenyang 110819, China;
3. College of Materials Science and Engineering, Sichuan University, Chengdu 610065, China
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摘要 采用熔铸法制备等摩尔比的AlCoCrCuFe高熵合金。利用X射线衍射仪、扫描电镜、能谱分析仪、显微硬度计和摩擦磨损试验机分别测试CeO2掺杂前后对其物相结构、显微组织和摩擦磨损性能的影响。结果表明:AlCoCrCuFe由BCC和FCC双相组成,合金中掺杂1%(质量分数) CeO2后引起衍射峰强度的显著提高。两种合金显微组织均为典型树枝晶,Cu与Ce元素在晶间富集,枝晶内为调幅分解组织。CeO2的加入使合金显微硬度从441.5HV增加到475.3HV,摩擦因数与质量损失率分别从0.55,1.44%降低到0.4,1.28%。
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马明星
王志新
梁存
周家臣
张德良
朱达川
关键词 高熵合金AlCoCrCuFeCeO2组织结构摩擦磨损    
Abstract:AlCoCrCuFe high-entropy alloy was fabricated by melting-casting method. The phase structure, microstructure and friction and wear property for this alloy without and with CeO2 doping were investigated by XRD, SEM, EDS, microhardness tester and friction-wear tester, respectively. The results show that AlCoCrCuFe alloy has BCC+FCC dual phase structure. 1%(mass fraction)CeO2 addition improves the diffraction peak of AlCoCrCuFe alloy. The microstructure of two above alloys is typical dendrite structure. The interdendrite region is mainly Cu-rich and Ce-rich area, and the dendrite microstructure is layered grid structure of spinodal decomposition. After CeO2 adding, the microhardness increases from 441.5HV to 475.3HV, and the friction coefficient and the mass loss rate decrease from 0.55 and 1.44% to 0.4 and 1.28%, respectively.
Key wordshigh-entropy alloy    AlCoCrCuFe    CeO2    microstructure    friction and wear
收稿日期: 2017-12-10      出版日期: 2019-07-19
中图分类号:  TG113.12  
通讯作者: 王志新(1972-),男,博士,教授,主要从事新型金属材料研究,联系地址:河南省郑州市新郑市龙湖镇淮河路1号中原工学院材料与化工学院(450007),zxwang72@163.com     E-mail: zxwang72@163.com
引用本文:   
马明星, 王志新, 梁存, 周家臣, 张德良, 朱达川. CeO2掺杂对AlCoCrCuFe高熵合金的组织结构与摩擦磨损性能的影响[J]. 材料工程, 2019, 47(7): 106-111.
MA Ming-xing, WANG Zhi-xin, LIANG Cun, ZHOU Jia-chen, ZHANG De-liang, ZHU Da-chuan. Effect of CeO2 doping on microstructure, friction and wear properties of AlCoCrCuFe high-entropy alloys. Journal of Materials Engineering, 2019, 47(7): 106-111.
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http://jme.biam.ac.cn/CN/10.11868/j.issn.1001-4381.2017.001519      或      http://jme.biam.ac.cn/CN/Y2019/V47/I7/106
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