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Journal of Iron and Steel Research International

Erschienen in:

01.02.2018 | Original Paper

Effects of Nb on microstructure and wear resistance of Fe–Cr–C–B surfacing alloy

verfasst von: Jian Gou, Zheng-jun Liu, Hua Jia

Erschienen in: Journal of Iron and Steel Research International | Ausgabe 2/2018

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Abstract

The influence of Nb on the microstructure and wear resistance of the surfacing layer was investigated by using the Fe-based flux-cored wire in the Fe–Cr–C–B system. The microstructure, microhardness and wear resistance properties of the samples were investigated by X-ray diffraction, scanning electron microscopy, microhardness testing and abrasive wear testing, respectively. The results indicate that microstructures of the alloy are composed of martensite, retained austenite, M₂₃(C,B)₆ and NbC. Boride M₂₃(C,B)₆ is distributed along the grain boundaries, while NbC in shape-regular quadrilateral is distributed in martensite. The microhardness is distributed from the substrate to the surfacing layer gradiently. NbC significantly improved the wear resistance of surfacing layer.

Vorheriger Artikel Effect of bainite microstructure during two-step quenching and partitioning process on strength and toughness properties of a 0.3%C bainitic steel

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Titel: Effects of Nb on microstructure and wear resistance of Fe–Cr–C–B surfacing alloy
verfasst von: Jian Gou
Zheng-jun Liu
Hua Jia
Publikationsdatum: 01.02.2018
Verlag: Springer Singapore
Erschienen in: Journal of Iron and Steel Research International / Ausgabe 2/2018
Print ISSN: 1006-706X
Elektronische ISSN: 2210-3988
DOI: https://doi.org/10.1007/s42243-018-0033-3

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