Microstructure and properties of gas atomized UHCS compacted by HIP and SPS

Juha Lagerbom, Jouko Virta, Juho Lotta, Katri Honkanen, Simo-Pekka Hannula

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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 languageEnglish
Title of host publicationProceedings
Subtitle of host publicationEURO PM2013
Place of PublicationGöteborg, Sweden
PublisherEuropean Power Metallurgy Association EPMA
Pages193-198
Volume1
ISBN (Electronic)978-1-899072-40-8
Publication statusPublished - 2013
MoE publication typeNot Eligible
EventEuro PM2013 - Gothenburg, Sweden
Duration: 15 Sep 201318 Sep 2013

Conference

ConferenceEuro PM2013
CountrySweden
CityGothenburg
Period15/09/1318/09/13

Fingerprint

Electric sparks
Carbon steel
Plasmas
Microstructure
Gases
Ferrite
Carbides
Hardness testing
Mechanical properties
Tensile testing
Phase structure
Elasticity
Hardness
Carbon
Steel
Processing

Keywords

  • powder
  • gas atomization
  • HIP

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). Göteborg, Sweden: European Power Metallurgy Association EPMA.
Lagerbom, Juha ; Virta, Jouko ; Lotta, Juho ; Honkanen, Katri ; Hannula, Simo-Pekka. / Microstructure and properties of gas atomized UHCS compacted by HIP and SPS. Proceedings: EURO PM2013. Vol. 1 Göteborg, Sweden : European Power Metallurgy Association EPMA, 2013. pp. 193-198
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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.",
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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, European Power Metallurgy Association EPMA, Göteborg, Sweden, pp. 193-198, Euro PM2013, Gothenburg, Sweden, 15/09/13.

Microstructure and properties of gas atomized UHCS compacted by HIP and SPS. / Lagerbom, Juha; Virta, Jouko; Lotta, Juho; Honkanen, Katri; Hannula, Simo-Pekka.

Proceedings: EURO PM2013. Vol. 1 Göteborg, Sweden : European Power Metallurgy Association EPMA, 2013. p. 193-198.

Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

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Lagerbom J, Virta J, Lotta J, Honkanen K, Hannula S-P. Microstructure and properties of gas atomized UHCS compacted by HIP and SPS. In Proceedings: EURO PM2013. Vol. 1. Göteborg, Sweden: European Power Metallurgy Association EPMA. 2013. p. 193-198