Analysis on Microstructure and Properties of Plasma Welding Joint with Surfaced Cobalt - Based Alloy Layer

Wei Gao; Cong Chen

doi:10.4028/www.scientific.net/AMR.154-155.480

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 154-155Analysis on Microstructure and Properties of...

Analysis on Microstructure and Properties of Plasma Welding Joint with Surfaced Cobalt - Based Alloy Layer

Abstract:

The microstructure and microhardness of plasma welding (PAW) joint with surfacing welded cobalt-based alloy have been investigated by using Optical microscope (OP) ,X-ray, scanning electron microscope (SEM),and microhardness testing. The results show that the surfacing layer microstructure is made up of the dendrite (γ-Co) and eutectic (γ-Co+M7C3). The microhardness decreases from surfacing layer to substrate. The highest hardness on the surfacing layer obtains with 550HV up. The fusion zone’s and substrate’s microhardness is about 380HVand 280HV respectively.

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Periodical:

Advanced Materials Research (Volumes 154-155)

Pages:

480-484

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.154-155.480

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Online since:

October 2010

Authors:

Wei Gao, Cong Chen

Keywords:

Cobalt-Based Alloy, Microhardness, Microstructure, Plasma Welding, Surfacing Layer

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