Research of Composite Coating Composed of Mo Wire and High-Cr Cast Iron Made by Laser Cladding Technology

Wei Zhang

doi:10.4028/www.scientific.net/AMM.395-396.1073

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 395-396Research of Composite Coating Composed of Mo Wire...

Research of Composite Coating Composed of Mo Wire and High-Cr Cast Iron Made by Laser Cladding Technology

Abstract:

The experiments of laser cladding on the surface of H13 steel were made. Molybdenum (Mo) wire and high-chromium (Cr) cast iron powder were used as cladding material. The microstructure and hardness of laser cladding layer were studied. The experiments showed that Mo wire and high-Cr cast iron cladding layer had better properties such as minute crystals, high density, no crack, no gas cavity and good metallurgical bonding with base metal. There was a slight melting on the surface of Mo wire which would greatly increase the binding force between Mo wire and high-Cr cast iron. Mo wire could make grain refine and limit the growing of carbide. The average hardness of junction zone of Mo wire and high-Cr cast iron was 750HV0.2 which was higher than that of cladding zone composed of high-Cr cast iron (650HV0.2).

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Periodical:

Applied Mechanics and Materials (Volumes 395-396)

Pages:

1073-1076

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.395-396.1073

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Online since:

September 2013

Authors:

Wei Zhang*

Keywords:

Hardness, High-Cr Cast Iron, Laser Cladding, Microstructure, Mo Wire

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