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 language | English |
|---|---|
| Pages (from-to) | 17-32 |
| Number of pages | 16 |
| Journal | Materials Science and Technology (United Kingdom) |
| Volume | 36 |
| Issue number | 1 |
| Early online date | 31 Oct 2019 |
| DOIs | |
| Publication status | Published - 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