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Journal of Materials Science

, Volume 29, Issue 17, pp 4460–4476 | Cite as

Non-equilibrium synthesis of Fe-Cr-C-W alloy by laser cladding

  • J. Choi
  • J. Mazumder
Papers

Abstract

Synthesis of Fe-Cr-C-W alloy using the laser cladding technique offered an opportunity to produce a novel wear-resistant material with fine and uniform microstructure. Use of preheating during laser cladding Fe-Cr-C-W provided crack-free clads. The preheating temperature was very critical to eliminate cracks in the clad. Different complex types of carbide were observed in this research. Overall laser process parameters such as power density or specific energy as well as preheating temperature affected the characteristics of the carbide precipitates in the matrix. The increase of solid solubility and high cooling rate resulted in good metallurgical characteristics. Mostly M6C or M23C6 type carbides were observed. Usually diamond-shaped M6C carbides showed good tribological characteristics. In general, increasing the power density brought an increase of average hardness, while decreasing the power density brought a decrease of wear scar width. The laser-clad Fe-Cr-C-W alloy showed better wear properties than laser-clad Fe-Cr-Mn-C and several times smaller scar width as compared to Stellite 6 hard-facing during line-contact wear testing.

Keywords

Carbide Power Density High Cool Rate Wear Scar Laser Cladding 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • J. Choi
    • 1
  • J. Mazumder
    • 1
  1. 1.Center for Laser Aided Materials Processing, Department of Mechanical and Industrial EngineeringUniversity of Illinois at Urbana-ChampaignUrbanaUSA

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