Abstract In this study, we used the gas tungsten arc welding (GTAW) process for cladding NiCrAlMoTiFeNbCo and NiCrAlMoTiFeNbW multicomponent alloys onto the surface of AISI 1020 low-carbon steel. The microstructures and the sliding wear resistance of the cladding layers were characterized. The experimental results indicated that a multiple-carbide particle composed of (Nb,Ti)C with a TiC-rich core and NbC shell, was synthesized in situ in both multicomponent cladding layers. The eutectic phase of Fe0.875Mo0.125 with the body-centered cubic structure (BCC) was present in the NiCrAlMoTiFeNbCo cladding layer, and the reinforcing phase of Fe2W with the hexagonal-closest-packed (HCP) structure was in the NiCrAlMoTiFeNbCW cladding layer. Wear test results revealed that the wear performance of the multicomponent cladding layers can significantly improve the wear resistance of the AISI 1020 low-carbon steel. The wear resistance of the NiCrAlMoTiFeNbW cladding layer exceeded that of the other cladding layer. The improvement in the wear resistance of the NiCrAlMoTiFeNbW cladding layer was attributable to the high hardness of the cladding layer and the Fe2W reinforcement in the cladding layer. The wear test results confirmed that the cladding layer with higher ratios of hardness to Young's modulus for both the matrix and the strengthening phase exhibited better wear resistance.

中文翻译：

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Co和W对NiCrAlMoTiFeNbX等摩尔多组分包覆层组织和磨损行为的影响

摘要 在本研究中，我们使用钨极气体保护焊 (GTAW) 工艺将 NiCrAlMoTiFeNbCo 和 NiCrAlMoTiFeNbW 多组分合金包覆到 AISI 1020 低碳钢表面。对熔覆层的微观结构和滑动耐磨性进行了表征。实验结果表明，由 (Nb,Ti)C 组成的多碳化物颗粒具有富含 TiC 的核和 NbC​​ 壳，是在两个多组分包覆层中原位合成的。具有体心立方结构（BCC）的 Fe0.875Mo0.125 共晶相存在于 NiCrAlMoTiFeNbCo 熔覆层中，具有六方最密堆积（HCP）结构的 Fe2W 增强相存在于 NiCrAlMoTiFeNbCW 熔覆层中. 磨损试验结果表明，多组分熔覆层的磨损性能可以显着提高AISI 1020低碳钢的耐磨性。NiCrAlMoTiFeNbW 熔覆层的耐磨性超过其他熔覆层。NiCrAlMoTiFeNbW熔覆层耐磨性的提高归因于熔覆层的高硬度和熔覆层中的Fe2W增强。磨损试验结果证实，对于基体和强化相而言，具有较高硬度与杨氏模量比的熔覆层表现出更好的耐磨性。NiCrAlMoTiFeNbW熔覆层耐磨性的提高归因于熔覆层的高硬度和熔覆层中的Fe2W增强。磨损试验结果证实，对于基体和强化相而言，具有较高硬度与杨氏模量比的熔覆层表现出更好的耐磨性。NiCrAlMoTiFeNbW熔覆层耐磨性的提高归因于熔覆层的高硬度和熔覆层中的Fe2W增强。磨损试验结果证实，对于基体和强化相而言，具有较高硬度与杨氏模量比的熔覆层表现出更好的耐磨性。