Microstructure and tribological properties of in-situ carbide/CoCrFeNiMn high entropy alloy composites synthesized by flake powder metallurgy

Ye, Wenting; Xie, Mingda; Huang, Zhuobin; Wang, Hanming; Zhou, Qing; Wang, Long; Chen, Biao; Wang, Haifeng; Liu, Weimin

doi:10.1016/j.triboint.2023.108295

Cited by 61 publications

(9 citation statements)

References 33 publications

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“…The paper [24], which concerns SPS sintering of a powder produced by milling, concluded that the presence of chromium carbides and magnesium oxides is due to the introduction of impurities from the balls into the powder during milling. In contrast, the authors of the publication [27] showed the presence of Cr7C3 chromium carbide and manganese-chromium complex oxide just below the surface. This confirms the tendency for chromium carbides to be formed in the presence of carbon and the tendency for oxide to be formed.…”

Section: Microstructure Of Hea Materialsmentioning

confidence: 92%

Influence of Tooling on the Properties of the Surface Layer in HEA Alloy Sinters Produced by the SPS Method

Kopeć-Surzyn,

Madej

2024

Coatings

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This paper reports the findings of a study on the Spark Plasma Sintering of High-Entropy Alloys (HEAs) using atomized alloy powder. The sintering process was conducted within a graphite matrix at a predetermined optimum temperature of 1050 °C. The resulting material exhibited a density close to the theoretical value. Hardness tests and microstructural observations revealed the impact of the graphite tool used during the sintering process, particularly in the near-surface layer. Chemical and phase composition analyses indicated the formation of chromium carbides in the near-surface layer, leading to the depletion of FCC phase grains in chromium and alterations in the shape and size of these grains.

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Section: Microstructure Of Hea Materialsmentioning

confidence: 92%

Influence of Tooling on the Properties of the Surface Layer in HEA Alloy Sinters Produced by the SPS Method

Kopeć-Surzyn,

Madej

2024

Coatings

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“…Carbide is a common particle phase in Ni-based alloys and is formed in situ by adding a small amount of C [ 4 , 20 ]. Ye et al [ 21 ] reduced the wear rate of the CoCrFeNiMn alloy by 78% by precipitating Cr 7 C 3 in situ through the powder metallurgy method, in which the C element was added in the form of graphene. Gao et al [ 22 ] fabricated in situ carbide-reinforced Ni-based composites by hot-pressing sintering Ni and Ti 2 AlC powders; the friction coefficient and wear rates of composites reduce with increasing Ti 2 AlC content, especially for the wear rate.…”

Section: Introductionmentioning

confidence: 99%

Tribocorrosion Behavior of NiCoCrMoCu Alloys Containing Different Carbides in Acidic Media at Various Applied Loads and Sliding Speeds

Li,

Zeng,

Teng

et al. 2024

Materials

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In this study, the ball-on-disk sliding wear and tribocorrosion behavior in the H2SO4 and HCl solution of NiCoCrMoCu alloys with carbon additions of 0.2, 1, 1.5, and 2 wt.% with the Al2O3 ball as a counterpart was investigated systematically. Obvious tribocorrosion antagonistic effects were found after wear in both aqueous solutions. Compared with dry sliding wear conditions, the lubrication effect of the aqueous solution significantly reduces the wear rate of the alloy, and the reduction effect in the H2SO4 aqueous solution was more obvious than that in HCl. The antagonistic effects of the 0.2C and 1C alloys decrease with the load and sliding rate, while those of the 1.5C and 2C alloys increase. The (coefficient of friction) COF and wear rate under different loads and sliding rates were analyzed using the response surface analysis (RSM) method. It was found that the COF mainly showed dependence on the sliding rate, while the wear rate showed dependence on load and sliding speed.

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“…The equiatomic CoCrFeNiMn alloy with an fcc structure shows high ductility and high fracture toughness even at significantly lower temperatures [ 1 , 2 , 3 ]. However, more slip systems in fcc solid solution [ 4 , 5 , 6 ] caused lower hardness of CoCrFeNiMn [ 7 , 8 ] and worse wear resistance [ 9 ]. Alloying is a crucial method to improve strength and wear resistance.…”

Section: Introductionmentioning

confidence: 99%

Effect of Boronizing on the Microstructure and Mechanical Properties of CoCrFeNiMn High-Entropy Alloy

Ouyang

Yin

et al. 2023

Materials

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The CoCrFeNiMn high-entropy alloys were treated by powder-pack boriding to improve their surface hardness and wear resistance. The variation of boriding layer thickness with time and temperature was studied. Then, the frequency factor D0 and diffusion activation energy Q of element B in HEA are calculated to be 9.15 × 10−5 m2/s and 206.93 kJ/mol, respectively. The diffusion behavior of elements in the boronizing process was investigated and shows that the boride layer forms with the metal atoms diffusing outward and the diffusion layer forms with the B atoms diffusing inward by the Pt-labeling method. In addition, the surface microhardness of CoCrFeNiMn HEA was significantly improved to 23.8 ± 1.4 Gpa, and the friction coefficient was reduced from 0.86 to 0.48~0.61.

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Microstructure and tribological properties of in-situ carbide/CoCrFeNiMn high entropy alloy composites synthesized by flake powder metallurgy

Cited by 61 publications

References 33 publications

Influence of Tooling on the Properties of the Surface Layer in HEA Alloy Sinters Produced by the SPS Method

Influence of Tooling on the Properties of the Surface Layer in HEA Alloy Sinters Produced by the SPS Method

Tribocorrosion Behavior of NiCoCrMoCu Alloys Containing Different Carbides in Acidic Media at Various Applied Loads and Sliding Speeds

Effect of Boronizing on the Microstructure and Mechanical Properties of CoCrFeNiMn High-Entropy Alloy

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