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In-situ precipitation of TiC upon PTA hardfacing with grey cast iron and titanium for enhanced wear resistance

journal contribution
posted on 2013-01-15, 00:00 authored by Santiago Corujeira GalloSantiago Corujeira Gallo, N Alam, R O'Donnell
Titanium and grey cast iron powders were blended and deposited by plasma transferred arc onto mild steel substrates. The powders were injected directly into the arc by a stream of inert gas. The grey cast iron provided the iron matrix and the excess carbon content for reaction and precipitation of titanium carbides. The microstructure of the overlay was analysed by optical microscopy and scanning electron microscopy, and the respective phases were identified by X-ray diffraction. Microhardness measurements were taken from representative areas and the wear behaviour was assessed under low-stress abrasion conditions. The results show that the addition of titanium produced a significant change in the microstructure of the overlays, increased surface hardness and enhanced wear resistance compared to overlays produced without titanium. © 2012 Elsevier B.V.

History

Journal

Surface and coatings technology

Volume

214

Pagination

63 - 68

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0257-8972

Language

eng

Publication classification

C Journal article; C1.1 Refereed article in a scholarly journal

Copyright notice

2016, Elsevier