| Microstructural characterization and oxidation resistance of multicomponent equiatomic CoCrCuFeNi-TiO high-entropy alloy |
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| 作者姓名： | Qing-dong Qin Jin-bo Qu Yong-e Hu Yu-jiao Wu Xiang-dong Su |
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| 作者单位： | Key Laboratory of Light Metal Materials Processing Technology of Guizhou Province, Guizhou Institute of Technology, Guiyang 550003, China |
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| 基金项目： | The National Natural Science Foundation of China;the Program for the Distinguished Young Scientific Talents of Guizhou;the New Process En-gineering Research Center of Process industry, Guizhou Province;Qian Jiao He KY(2017) 021;and the Key Labor-
atory of Light Metal Materials Processing of Guizhou Prov-ince;as well as The Scientific&Technological Innovation Talent Team |
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| 摘 要： | 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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| 关 键 词： | multicomponent equiatomic high-entropy alloys microstructure oxidation resistance |
Microstructural characterization and oxidation resistance of multicomponent equiatomic CoCrCuFeNi–TiO high-entropy alloy |
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| Qing-dong Qin,Jin-bo Qu,Yong-e Hu,Yu-jiao Wu,Xiang-dong Su.Microstructural characterization and oxidation resistance of multicomponent equiatomic CoCrCuFeNi-TiO high-entropy alloy[J].International Journal of Minerals,Metallurgy and Materials,2018,25(11):1286-1293. |
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| Authors: | Qing-dong Qin Jin-bo Qu Yong-e Hu Yu-jiao Wu Xiang-dong Su |
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| Institution: | 1.Key Laboratory of Light Metal Materials Processing Technology of Guizhou Province,Guizhou Institute of Technology,Guiyang,China;2.Department of Materials & Metallurgy Engineering,Guizhou Institute of Technology,Guiyang,China;3.Merchant Marine college,Shanghai Maritime University,Shanghai,China;4.2011 Special Functional Materials Collaborative Innovation Center of Guizhou Province,Guiyang,China |
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| Abstract: | CoCrCuFeNi–TiO was prepared by arc melting of the pure elements and Ti2CO powder under an Ar atmosphere. Both CoCrCu-FeNi 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 CoCr-CuFeNi. However, as the TiO content increases further, a corresponding decrease is observed in the oxidation resistance. |
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