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Open AccessArticle

Comparative Study on the Dry Sliding Friction Properties of In-Situ Micron and Submicron (Ti-V)C Reinforced Fe-Based Laser Cladding Layers

College of Mechanical and Automotive Engineering, Qilu University of Technology (Shandong Academy of Sciences), Jinan 250353, China
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Metals 2020, 10(6), 742; https://doi.org/10.3390/met10060742
Received: 29 April 2020 / Revised: 27 May 2020 / Accepted: 30 May 2020 / Published: 3 June 2020
By optimising the particle size of cladding alloy powders, in situ micron and submicron (Ti-V)C reinforced Fe-based laser cladding layers were prepared and the dry sliding friction properties were comparatively studied. Results showed that there were same phases of α-Fe, γ, TiC, and TiVC2 in the two cladding layers. The average grain size of the Fe-based matrix was 3.46 μm and 3.37 μm, the microhardness was 731 HV0.2 and 736 HV0.2, and the area ratio of carbides was 11.14% and 11.02%, respectively. The dry sliding wear resistance of the cladding layer reinforced by 1.95 μm carbides was 2.76 times higher than that of the 0.49 μm carbides. The failure mechanism of the cladding layer with the micron carbides was mainly caused by plastic deformation of the cladding layer matrix, whereas that of the submicron carbides involved both the plastic deformation of the cladding layer matrix and the abrasion that was caused by the peeled carbides. View Full-Text
Keywords: laser cladding; micron carbides; submicron carbides; dry sliding friction; (Ti-V)C laser cladding; micron carbides; submicron carbides; dry sliding friction; (Ti-V)C
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Liu, Y.; Zhang, H.; Xiao, G.; Zhao, W.; Xu, H. Comparative Study on the Dry Sliding Friction Properties of In-Situ Micron and Submicron (Ti-V)C Reinforced Fe-Based Laser Cladding Layers. Metals 2020, 10, 742.

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