Journal of Northeastern University(Natural Science)

Journal of Northeastern University ›› 2012, Vol. 33 ›› Issue (10): 1411-1414.DOI: -

• OriginalPaper • Previous Articles     Next Articles

Techniques and performance of high speed steel powder cladding by continuous laser on nodular cast iron surface

Xu, Ni-Jun (1); Liu, Chang-Sheng (1); Shang, Shuo (2); Sun, Ting (3)   

  1. (1) Key Laboratory for Anisotropy and Texture of Materials (Ministry of Education), Northeastern University, Shenyang 110819, China; (2) Department of Engineering, University of Liverpool, Liverpool L693GQ, United Kingdom; (3) School of Sciences, Northeastern University, Shenyang 110819, China
  • Received:2013-06-19 Revised:2013-06-19 Online:2012-10-15 Published:2013-04-04
  • Contact: Liu, C.-S.
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Abstract: The continuous CO2 laser was applied to clad a strengthening layer of high speed steel on the surface of nodular cast iron rolls. The cladding is dense, pore- and crack-free, and the combination between cladding and substrate is metallurgical. The optimized laser processing parameters were obtained. The main strengthening phases in Ni60+T15+T15 cladding are V4C3, WC1-x and CoCx. The average microhardness of the cladding is 716 HV, which is about 2.2 times as high as that of the substrate. The main strengthening phase in Ni60+YT12+YT12 cladding is Cr7C3 distributed mainly on the grain boundary. The average microhardness of cladding is 739 HV, about 2.3 times of the value for substrate.

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