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Effect of Co on microstructure and interfacial properties of Fe-based laser cladding

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Abstract

The coatings consisting of Fe0.64 Ni0.36 dendrites as matrix and (Fe,Cr)7 (C,B)3 interdendritic compounds as reinforcement were fabricated on the medium steel substrate by laser cladding using the Fe-based powders with different Co content, and Co is uniformly dissolved in the coatings. Compared with the coatings containing 1% and 5% Co, the coating containing 3% Co increases in the area fraction of the interdendritic region by about 5% , in the microhardness nearby the interface by about HV 55 and in the interfacial bond strength by about 30 MPa. The interface fracture morphology exhibits the tear appearance, which can be characterized as the ductile fracture.

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Authors and Affiliations

  1. Key Laboratory of Liquid Structure and Heredity of Materials of Ministry of Education, Shandong University, 250061, Jinan, Shandong, China

    Li-li Gao (Master), Xiu-fang Bian, Yong-sheng Tian & Chun-xia Fu

Authors
  1. Li-li Gao
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  2. Xiu-fang Bian
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  3. Yong-sheng Tian
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  4. Chun-xia Fu
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Correspondence to Li-li Gao.

Additional information

Foundation Item: Item Sponsored by National Natural Science Foundation of China (50471052); Provincial Natural Science Foundation of Shandong Province of China (Z2004F02)

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Gao, Ll., Bian, Xf., Tian, Ys. et al. Effect of Co on microstructure and interfacial properties of Fe-based laser cladding. J. Iron Steel Res. Int. 16, 84–88 (2009). https://doi.org/10.1016/S1006-706X(09)60066-2

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  • DOI: https://doi.org/10.1016/S1006-706X(09)60066-2

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