Silicon carbide particulates incorporated into microalloyed steel surface using TIG: microstructure and properties

P. Muñoz-Escalona, F. Sillars, T. Marrocco, R. Edgar, S. Mridha, T. N. Baker*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

10 Citations (Scopus)
63 Downloads (Pure)

Abstract

Surface metal matrix composites have been developed to enhance properties such as erosion, wear and corrosion of alloys. In this study, ~5 µm or ~75 µm SiC particulates were preplaced on a microalloyed steel. Single track surface zones were melted by a tungsten inert gas torch, and the effect of two heat inputs, 420Jmm-1 and 840 Jmm-1,compared. The results showed that the samples melted using 420Jmm-1 were crack-free. Pin-on-disk wear testing under dry sliding conditions were conducted. The effects of load and sliding velocity were used to characterise the performance of the crack-free samples. Microstructural and X-ray diffraction studies of the surface showed that the SiC had dissolved, and that martensite, was the main phase influencing the hardness.
Original languageEnglish
Pages (from-to)17-32
Number of pages16
JournalMaterials Science and Technology (United Kingdom)
Volume36
Issue number1
Early online date31 Oct 2019
DOIs
Publication statusPublished - 2 Jan 2020

Funding

The authors would like to acknowledge that some of this work was carried out at the Advanced Materials Research Laboratory, housed within the University of Strathclyde and to thank, Dr Maider Olasolo, Steven Black, Gerard Johnston and James Kelly for their technical support in this work.

Keywords

  • surface engineering
  • microalloyed steel
  • silicon carbide particulates
  • particle size
  • TIG melting
  • wear rate
  • microhardness

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