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Volume 25 Issue 11
Nov.  2018
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文章导航 >  矿物冶金与材料学报（英文）  > 2018  >  25(11): 1286-1293
Qing-dong Qin, Jin-bo Qu, Yong-e Hu, Yu-jiao Wu, and Xiang-dong Su, Microstructural characterization and oxidation resistance of multicomponent equiatomic CoCrCuFeNi-TiO high-entropy alloy, Int. J. Miner. Metall. Mater., 25(2018), No. 11, pp. 1286-1293. https://doi.org/10.1007/s12613-018-1681-9
Cite this article as:
Qing-dong Qin, Jin-bo Qu, Yong-e Hu, Yu-jiao Wu, and Xiang-dong Su, Microstructural characterization and oxidation resistance of multicomponent equiatomic CoCrCuFeNi-TiO high-entropy alloy, Int. J. Miner. Metall. Mater., 25(2018), No. 11, pp. 1286-1293. https://doi.org/10.1007/s12613-018-1681-9
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研究论文

Microstructural characterization and oxidation resistance of multicomponent equiatomic CoCrCuFeNi-TiO high-entropy alloy

  • Key Laboratory of Light Metal Materials Processing Technology of Guizhou Province, Guizhou Institute of Technology, Guiyang 550003, China

  • Department of Materials & Metallurgy Engineering, Guizhou Institute of Technology, Guiyang 550003, China

  • Merchant Marine college, Shanghai Maritime University, Shanghai 201306, China

  • 2011 Special Functional Materials Collaborative Innovation Center of Guizhou Province, Guiyang 550003, China

  • 通讯作者:

    Qing-dong Qin    E-mail: qin8370@126.com

  • CoCrCuFeNi-TiO was prepared by arc melting of the pure elements and Ti2CO powder under an Ar atmosphere. Both CoCrCuFeNi and CoCrCuFeNi-TiO alloys are composed of a face-centered cubic (fcc) solid solution, whereas the alloys of CoCrCuFeNi-TiO are basically composed of an fcc solid solution and TiO crystals. The microstructures of CoCrCuFeNi-TiO are identified as dendrite and interdendrite structures such as CoCrCuFeNi. The morphology of TiO is identified as an equiaxed crystal with a small amount of added Ti2CO. By increasing the amount of Ti2CO added, the TiO content was dramatically increased and part of the equiaxed crystals changed to a dendrite structure. A test of the oxidation resistance demonstrates that the oxidation resistance of CoCrCuFeNi-TiO is better than that of CoCrCuFeNi. However, as the TiO content increases further, a corresponding decrease is observed in the oxidation resistance.
    • Research Article

    Microstructural characterization and oxidation resistance of multicomponent equiatomic CoCrCuFeNi-TiO high-entropy alloy

    + Author Affiliations
      Abstract
    • CoCrCuFeNi-TiO was prepared by arc melting of the pure elements and Ti2CO powder under an Ar atmosphere. Both CoCrCuFeNi and CoCrCuFeNi-TiO alloys are composed of a face-centered cubic (fcc) solid solution, whereas the alloys of CoCrCuFeNi-TiO are basically composed of an fcc solid solution and TiO crystals. The microstructures of CoCrCuFeNi-TiO are identified as dendrite and interdendrite structures such as CoCrCuFeNi. The morphology of TiO is identified as an equiaxed crystal with a small amount of added Ti2CO. By increasing the amount of Ti2CO added, the TiO content was dramatically increased and part of the equiaxed crystals changed to a dendrite structure. A test of the oxidation resistance demonstrates that the oxidation resistance of CoCrCuFeNi-TiO is better than that of CoCrCuFeNi. However, as the TiO content increases further, a corresponding decrease is observed in the oxidation resistance.
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