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Microstructure and Wear Resistance of Laser Clad Fe-Cr3C2 Composite Coating on 35CrMo Steel

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Abstract

Fe-Cr3C2 hard coatings with varying Cr3C2 content were produced on 35CrMo steel substrates by laser cladding. The experimental results showed that the coatings were uniform, continuous, and free of cracks. High adhesions between all produced coatings and their corresponding substrates were obtained due to the metallurgical interfaces between them. The microstructures of the coatings were mainly composed of austenitic dendrites and M7C3. The microhardness gradually increased from the bottom to the top of the coating, and increased with elevation of Cr3C2 content. The Fe-Cr3C2 coatings improved the sliding wear resistance of the 35CrMo steel substrates obviously, and the dominant wear mechanism was spalling fatigue, with plowed grooves on the worn surfaces.

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Acknowledgments

The authors would like to acknowledge the supports from the National Natural Science Foundation of China (Project No. 51179202), the Natural Science Foundation of Shandong Province (Project No. ZR2009FM030), and the Fundamental Research Funds for the Central Universities (Project No. 13CX02073A).

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Authors and Affiliations

  1. College of Electromechanical Engineering, China University of Petroleum, 66 ChangJiang West Road, Qingdao, 266580, China

    Bin Han, Meiyan Li & Yong Wang

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  1. Bin Han
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  2. Meiyan Li
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  3. Yong Wang
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Correspondence to Bin Han.

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Han, B., Li, M. & Wang, Y. Microstructure and Wear Resistance of Laser Clad Fe-Cr3C2 Composite Coating on 35CrMo Steel. J. of Materi Eng and Perform 22, 3749–3754 (2013). https://doi.org/10.1007/s11665-013-0708-7

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  • DOI: https://doi.org/10.1007/s11665-013-0708-7

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