Microstructures and Properties of Plasma Surfaced NiCrBSi+WC/Co Layers

Wen Quan Wang; Bao Sheng Lu; Shi Ming Huang; Qun You

doi:10.4028/www.scientific.net/AMR.291-294.109

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 291-294Microstructures and Properties of Plasma Surfaced...

Microstructures and Properties of Plasma Surfaced NiCrBSi+WC/Co Layers

Abstract:

Microstructures and properties of plasma surfaced NiCrBSi+20%WC/12Co layer prepared on the die steel (H13) substrate were investigated. The study showed that the interface boundary existed between the layer and substrate. Compared with the typical microstructures of welded joint, the similar columnar grains in the layer perpendicular to the interface line were observed, which were never seen in the plasma sprayed coating. The conclusion could be drawn that the bonding between the NiCrBSi+20%WC/12Co layer and H13 substrate belonged to the metallurgical cohesion. The XRD analysis showed that the main phases in the layer included γ-(Fe, Ni), Cr₇BC₄, Ni₄B₃, Cr₇C₃ and Co₇W₆, which brought higher strength and higher hardness to the surfaced layer than the H13 substrate.

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Advanced Materials Research (Volumes 291-294)

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109-112

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https://doi.org/10.4028/www.scientific.net/AMR.291-294.109

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Online since:

July 2011

Authors:

Wen Quan Wang, Bao Sheng Lu, Shi Ming Huang, Qun You

Keywords:

Microstructures and Properties, NiCrBSi, Plasma Surfaced Layer, WC-Co

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