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Effect of WC content on microstructures and mechanical properties of FeCoCrNi high-entropy alloy/WC composite coatings by plasma cladding
Surface & Coatings Technology ( IF 5.3 ) Pub Date : 2020-01-10 , DOI: 10.1016/j.surfcoat.2019.125326
Yingbo Peng , Wei Zhang , Tianchen Li , Mingyang Zhang , Bin Liu , Yong Liu , Li Wang , Songhao Hu

FeCoCrNi high-entropy alloy/WC composite coatings were fabricated via plasma cladding on steels adding different mass fraction of WC. Effects of WC content on the microstructure and mechanical properties of the coatings were studied. The results showed that WC content significantly affected microstructure and the wear resistance of the coatings. With the increase of WC content, the microstructures of the coatings became complex. When WC content was more than 60%, the coatings consisted of WC, FCC phase of HEA matrix as metal bond, Fe3W3C carbide phase and Cr-rich secondary solid solution phase. The Fe3W3C carbides improved the hardness and wear resistance of the coating. When WC content was at a high proportion of 60%, the HEA/WC coating had the best wear resistance with the minimum volume wear rate of 3.27 × 107 mm3/N·m and the high hardness of 59.6 HRC, which was better than commercial Ni60/WC coating with the same WC content.



中文翻译:

WC含量对等离子熔覆FeCoCrNi高熵合金/ WC复合涂层组织和力学性能的影响

FeCoCrNi高熵合金/ WC复合涂层是通过等离子熔覆在添加了不同质量分数WC的钢上制成的。研究了WC含量对涂层组织和力学性能的影响。结果表明,WC含量显着影响涂层的显微组织和耐磨性。随着WC含量的增加,涂层的微观结构变得复杂。当WC含量大于60%时,涂层由WC,HEA基体的FCC相作为金属结合剂,Fe 3 W 3 C碳化物相和富Cr的二次固溶体相组成。铁3 W 3碳化碳改善了涂层的硬度和耐磨性。当WC含量在60%时,HEA比例高/ WC涂层具有3.27×10的最小体积磨损率最好的耐磨性- 7 毫米3 / N·m和高硬度59.6 HRC的,这是优于相同WC含量的商用Ni60 / WC涂层。

更新日期:2020-01-10
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