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Thermodynamic modeling and experimental study on the microstructure of laser clad Ni–base alloy coatings on 45 steel

Published online by Cambridge University Press:  12 April 2013

Yiwen Lei ,
Ronglu Sun  and
Ying Tang
Yiwen Lei*
Affiliation:
Department of Materials Engineering, School of Mechanical Engineering, Tianjin Polytechnic University, Tianjin 300387, China; and Tianjin Key Laboratory of Advanced Mechatronics Equipment Technology; Tianjin 300387, China
Ronglu Sun
Affiliation:
Department of Materials Engineering, School of Mechanical Engineering, Tianjin Polytechnic University, Tianjin 300387, China
Ying Tang
Affiliation:
Department of Materials Engineering, School of Mechanical Engineering, Tianjin Polytechnic University, Tianjin 300387, China
*
a)Address all correspondence to this author. e-mail: [email protected]
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Abstract

Ni–base alloy coatings were fabricated on 45 steel by laser cladding using a CW-CO2 laser system. The microstructure of the coatings was analyzed using optical microscope (OM), scanning electronic microscope (SEM), and x-ray diffractometer (XRD). The phase fractions, phase compositions, and solidification process in the coatings were calculated using Thermo-Calc software and compared with experimental results. The results show that a dense crack- and porous-free coating with good metallurgical bond is obtained under optimal process parameters. The coatings can be divided into three regions: clad zone (CZ), bonding zone, and heat-affected zone of the substrate. The CZ consists of γ-Ni, M7C3, CrB, and Ni3B phases. Based on the calculated results, the solidification process and reaction scheme in the coatings were discussed. The calculated results obtained from Thermo-Calc software agree with the experimental data well. It is beneficial to the coating design for a desirable microstructure and mechanical properties.

Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 9 , 14 May 2013 , pp. 1189 - 1195
Copyright
Copyright © Materials Research Society 2013 

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References

REFERENCES

Yan, M. and Zhu, W-Z.: Surface treatment of 45 steel by plasma-arc melting. Surf. Coat. Technol. 91, 183 (1997).CrossRefGoogle Scholar
Yang, S., Chen, N., Liu, W-J., Zhong, M-L., Wang, Z-J., and Kokawa, H.: Fabrication of nickel composite coatings reinforced with TiC particles by laser cladding. Surf. Coat. Technol. 183, 254 (2004).CrossRefGoogle Scholar
Ma, S-L., Li, Y-H., and Xu, K-W.: The composite of nitrided steel of H13 and TiN coatings by plasma duplex treatment and the effect of pre-nitriding. Surf. Coat. Technol. 137, 116 (2001).CrossRefGoogle Scholar
Zlatanovic, M., Gredic, T., Kunosic, A., Backovic, N., and Whittle, N.: Substrate-induced changes of TiN and (Ti, Al)N coatings due to plasma nitriding. Surf. Coat. Technol. 63, 35 (1994).CrossRefGoogle Scholar
Lei, Y-W., Sun, R-L., Lei, J-B., Tang, Y., and Niu, W.: A new theoretical model for high power laser clad TiC/NiCrBSiC composite coatings on Ti6Al4V alloys. Opt. Lasers Eng. 48, 899 (2010).CrossRefGoogle Scholar
Pei, Y-T. and Zuo, T-C.: Gradient microstructure in laser clad TiC-reinforced Ni-alloy composite coating. Mater. Sci. Eng., A 241, 259 (1998).CrossRefGoogle Scholar
Zhang, D-W., Li, T., and Lei, T-C.: Laser cladding of Ni-Cr3C2/(Ni+Cr) composite coating. Surf. Coat. Technol. 110, 81 (1998).Google Scholar
Zhang, D-W., Lei, T-C., and Li, F-J.: Laser cladding of stainless steel with Ni-Cr3C2 for improved wear performance. Wear 251, 1372 (2001).CrossRefGoogle Scholar
Li, Q., Lei, T-C., and Chen, W-Z.: Microstructural characterization of laser-clad TiCp-reinforced Ni-Cr-B-Si-C composite coatings on steel. Surf. Coat. Technol. 114, 278 (1999).CrossRefGoogle Scholar
Tobar, M-J., Álvarez, C., Amado, J-M., Rodríguez, G., and Yáñez, A.: Morphology and characterization of laser clad composite NiCrBSi-WC coatings on stainless steel. Surf. Coat. Technol. 200, 6313 (2006).CrossRefGoogle Scholar
Sun, R-L., Wang, Y-S., Tang, Y., and Yang, X-C.: Microstructure and microhardness of NiCrBSi alloy laser cladding layer on 45 steel substrate. Tianjin Gongye Daxue Xuebao 22, 79 (2003).Google Scholar
Tam, K-F., Cheng, F-T., and Man, H-C.: Cavitation erosion behavior of laser-clad Ni-Cr-Fe-WC on brass. Mater. Res. Bull. 37, 1341 (2002).CrossRefGoogle Scholar
Viswanathan, A., Sastikumar, D., Rajarajan, P., Kumar, H., and Nath, A-K.: Laser irradiation of AISI 316L stainless steel coated with Si3N4 and Ti. Opt. Laser Technol. 39, 1504 (2007).CrossRefGoogle Scholar
Chen, Y. and Wang, H-M.: Growth morphology and mechanism of primary TiC carbide in laser clad TiC/FeAl composite coating. Mater. Lett. 57, 1233 (2003).CrossRefGoogle Scholar
Sundman, B., Jansson, B., and Andersson, J-O.: The thermo-calc databank system. Calphad 9, 153 (1985).CrossRefGoogle Scholar
Hillert, M. and Staffansson, L.I.: Regular solution model for stoi-chiometric phases and ionic. Melts. Acta Chem. Scand. 24, 3618 (1970).CrossRefGoogle Scholar
Hu, S-L., Guo, Y., Dong, Y-G., Yang, J-L., Liu, J., and Cao, S-R.: Understanding the effects of the structures on the energy gaps in carbon nanoparticles from laser synthesis. J. Mater. Chem. 22, 12053 (2012).CrossRefGoogle Scholar
Hu, S-L., Tian, F., Bai, P-K., Cao, S-R., Sun, J., and Yang, J.: Synthesis and luminescence of nanodiamonds from carbon black. Mater. Sci. Eng., B 157, 11 (2009).CrossRefGoogle Scholar