Larger-area alloying of CSiB+NiMoCo on carbon steel by a 45-kW CO2 laser: effect of protection gas on process and microstructure

Minlin Zhong; Wenjin Liu; Jean-Claude Goussain; Cecile Mayer; Jerome Fritz

doi:10.1117/12.377036

7 February 2000 Larger-area alloying of CSiB+NiMoCo on carbon steel by a 45-kW CO₂ laser: effect of protection gas on process and microstructure

Minlin Zhong, Wenjin Liu, Jean-Claude Goussain, Cecile Mayer, Jerome Fritz

Author Affiliations +

Proceedings Volume 3888, High-Power Lasers in Manufacturing; (2000) https://doi.org/10.1117/12.377036
Event: Advanced High-Power Lasers and Applications, 1999, Osaka, Japan

Abstract

Laser alloying of CSiB+NiMoCo by a 45kW CO₂ laser was investigated to achieve sound large functional layer with smooth surface, little oxidation and free of cracks on cheap and broadly used common carbon steel XC38. The protection gas has obvious influence on the alloying results. Compared with Ar and N₂, He results in the best surface smooth, finest microstructure (second dendrite arm Ar:N₂:He equals 1:1:0.6), highest cooling rate (Ar:N₂:He equals 1:1.1:4),highest average hardness HV0.2(Ar:N₂:He equals 1:1.14:1.15), most resolvability of alloying elements (about Ar:N₂:He equals 1:1.1:1.5). These results can be properly explained by mainly the difference in physical properties of these three gases.

Citation Download Citation

Minlin Zhong, Wenjin Liu, Jean-Claude Goussain, Cecile Mayer, and Jerome Fritz "Larger-area alloying of CSiB+NiMoCo on carbon steel by a 45-kW CO₂ laser: effect of protection gas on process and microstructure", Proc. SPIE 3888, High-Power Lasers in Manufacturing, (7 February 2000); https://doi.org/10.1117/12.377036

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