Comparative investigation on anti-wear mechanism and properties of nano and micron WC reinforce Hastelloy-X composites using oscillating laser deposition

IF 6.1 1区工程技术 Q1 ENGINEERING, MECHANICAL Wear Pub Date : 2025-01-02 DOI:10.1016/j.wear.2024.205731

Tao Wang , Jingze Wu , Yining Hu , Lei Zhou , Lei Zhu

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Abstract

Utilizing the oscillation laser deposition, nano-WC, micron-WC, and nano/micron-WC ceramic particle-reinforced Hastelloy-X(HX) composites were fabricated, a comprehensive analysis was conducted to investigate their microstructures, microhardness, wear performance, and tribological mechanisms. The results indicate that compared to HX, the microhardness of micron WC/HX and nano WC/HX composites increased by 24.81 %, 37.10 %, respectively. And the wear test of the tribological counterbody made of GCr15 is carried out under three different loads: 200N, 230N and 260N. They were calculated to have improved by an average of the anti-wear performance improved by 67.9 %, 73.0 %. In the composite microstructure, nano-WC particles completely dissolved, while micro-WC particles partially dissolved. The disparity in dissolution degree led to differences in the hardness and anti-wear strengthening mechanisms of the composites. TEM analysis revealed that the completely dissolved nano-WC formed recrystallized grain boundary phases composed of M₆C, Cr₇C₃, and Laves phases, which significantly strengthened the hardness and anti-wear performance of material. Conversely, the reinforcement effect of micron-WC mainly stems from the unmelted particles formed by WC and W₂C.

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振荡激光沉积纳米和微米WC增强哈氏合金- x复合材料抗磨机理和性能的对比研究

利用振荡激光沉积技术制备了纳米碳化钨、微米碳化钨和纳米/微米碳化钨陶瓷颗粒增强哈氏合金- x （HX）复合材料，并对其显微组织、显微硬度、磨损性能和摩擦学机理进行了综合分析。结果表明：与HX相比，微米级WC/HX和纳米级WC/HX复合材料的显微硬度分别提高了24.81%、37.10%；并在200N、230N和260N三种不同载荷下对GCr15摩擦副体进行了磨损试验。经计算，它们的抗磨性能平均提高了67.9%,73.0%。复合结构中，纳米wc颗粒完全溶解，微wc颗粒部分溶解。溶出程度的差异导致复合材料的硬度和抗磨强化机制存在差异。TEM分析表明，完全溶解的纳米wc形成由M6C、Cr7C3和Laves相组成的再结晶晶界相，显著增强了材料的硬度和抗磨性能。相反，微米级WC的增强作用主要来自WC与W2C形成的未熔化颗粒。

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来源期刊

Wear 工程技术-材料科学：综合

CiteScore

8.80

自引率

8.00%

发文量

280

审稿时长

47 days

期刊介绍： Wear journal is dedicated to the advancement of basic and applied knowledge concerning the nature of wear of materials. Broadly, topics of interest range from development of fundamental understanding of the mechanisms of wear to innovative solutions to practical engineering problems. Authors of experimental studies are expected to comment on the repeatability of the data, and whenever possible, conduct multiple measurements under similar testing conditions. Further, Wear embraces the highest standards of professional ethics, and the detection of matching content, either in written or graphical form, from other publications by the current authors or by others, may result in rejection.