Abstract
Ultra-high carbon steels (UHCS) are hypereutectoid steels
containing 1.0-2.1% carbon. Exceptional mechanical
properties have been reported in materials processed to
fine ferrite grains with fine spherical carbides. In this
study UHCS C 1.6, Al 1.67, Cr 1.28, Si 0.72, Mn 0.72
wt.-% was cast and hot rolled (HR), hot isostatical
pressed (HIP) and spark plasma sintered (SPS).
Microstructures, phase structures and mechanical
properties were compared. Processing parameters affect
the microstructure considerably. HIP and SPS materials
had with optimum parameters fine spherical carbides and
fine-grained ferrite/perlite structure. Hot rolled
material had coarser microstructure with large ferrite
grains. Hot rolled material had higher hardness and lower
elasticity than PM-materials. Heat-treated materials were
also compared using hardness testing and tensile testing.
| Original language | English |
|---|---|
| Title of host publication | Proceedings |
| Subtitle of host publication | EURO PM2013 |
| Place of Publication | Göteborg, Sweden |
| Publisher | European Power Metallurgy Association EPMA |
| Pages | 193-198 |
| Volume | 1 |
| ISBN (Electronic) | 978-1-899072-40-8 |
| Publication status | Published - 2013 |
| MoE publication type | Not Eligible |
| Event | Euro PM2013 - Gothenburg, Sweden Duration: 15 Sep 2013 → 18 Sep 2013 |
Conference
| Conference | Euro PM2013 |
|---|---|
| Country | Sweden |
| City | Gothenburg |
| Period | 15/09/13 → 18/09/13 |
Keywords
- powder
- gas atomization
- HIP
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Cite this
Lagerbom, J., Virta, J., Lotta, J., Honkanen, K., & Hannula, S-P. (2013). Microstructure and properties of gas atomized UHCS compacted by HIP and SPS. In Proceedings: EURO PM2013 (Vol. 1, pp. 193-198). European Power Metallurgy Association EPMA.