Acta Metallurgica Sinica (English Letters) ›› 2012, Vol. 25 ›› Issue (2): 124-130.DOI: 10.11890/1006-7191-122-124

• 研究论文 • 上一篇    下一篇

Co对FeCoxNiCuAl髙熵合金微观组织和力学性能的影响

庄艳歆1,Wenjiu Liu1,邢鹏飞1,王菲1,赫冀成2   

  1. 1. 东北大学
    2. 东北大学材料电磁过程教育部重点实验室
  • 收稿日期:2011-10-10 修回日期:2011-12-05 出版日期:2012-04-25 发布日期:2012-04-11
  • 通讯作者: 庄艳歆

Effect of Co element on microstructure and mechanical properties of FeCoxNiCuAl alloys

Yanxin ZHUANG1, Wenjie LIU1, Pengfei XING2, Fei WANG1,Jicheng HE1   

  1. 1. Key Laboratory of Electromagnetic Processing of Materials (Ministry of Education), Northeastern University, Shenyang 110819, China
    2. School of Materials and Metallurgy, Northeastern University, Shenyang 110819,China
  • Received:2011-10-10 Revised:2011-12-05 Online:2012-04-25 Published:2012-04-11
  • Contact: Yanxin ZHUANG

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摘要： FeCoxNiCuAl (x values in molar ratio, x=0.2, 0.5, 1, 1.5, 2 and 3) alloys were prepared using a suck-casting method. The effect of Co element on phase constituents, microstructure and mechanical properties of the FeCoxNiCuAl alloys was investigated using X-ray diffraction, scanning electron microscopy, optical microscopy and compressive tests. It was found that the Co addition has a significant influence on the structure and properties of the FeCoxNiCuAl alloys. The alloys have typical dendrite microstructure, and are composed of a simple FCC structure and BCC structure. The addition of Co promotes the formation of FCC phase in the alloys, retards the compressive strength and hardness of the alloys, and enhances the plasticity of the alloys.

Abstract: FeCoxNiCuAl (x values in molar ratio, x=0.2, 0.5, 1, 1.5, 2 and 3) alloys were prepared using a suck-casting method. The effect of Co element on phase constituents, microstructure and mechanical properties of the FeCoxNiCuAl alloys was investigated using X-ray diffraction, scanning electron microscopy, optical microscopy and compressive tests. It was found that the Co addition has a significant influence on the structure and properties of the FeCoxNiCuAl alloys. The alloys have typical dendrite microstructure, and are composed of a simple fcc structure and bcc structure. The addition of Co promotes the formation of fcc phase in the alloys, retards the compressive strength and hardness of the alloys, and enhances the plasticity of the alloys.

Key words: High entropy alloy, Co element, Microstructure, Properties