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

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

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

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

Aalto University

Research output: Chapter in Book/Report/Conference proceeding › Conference article in proceedings › Scientific › peer-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 language	English
Title of host publication	Proceedings
Subtitle of host publication	EURO PM2013
Place of Publication	Göteborg
Publisher	European Powder Metallurgy Association (EPMA)
Pages	193-198
Volume	1
ISBN (Electronic)	978-1-899072-40-8
Publication status	Published - 2013
MoE publication type	A4 Article in a conference publication
Event	Euro PM2013 - Gothenburg, Sweden Duration: 15 Sept 2013 → 18 Sept 2013

Conference

Conference	Euro PM2013
Country/Territory	Sweden
City	Gothenburg
Period	15/09/13 → 18/09/13

Keywords

powder
gas atomization
HIP

Cite this

@inproceedings{abcc391ccebf446ba202f7cadc70e199,

title = "Microstructure and properties of gas atomized UHCS compacted by HIP and SPS",

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.",

keywords = "powder, gas atomization, HIP",

author = "Juha Lagerbom and Jouko Virta and Juho Lotta and Katri Honkanen and Simo-Pekka Hannula",

year = "2013",

language = "English",

volume = "1",

pages = "193--198",

booktitle = "Proceedings",

publisher = "European Powder Metallurgy Association (EPMA)",

address = "United Kingdom",

note = "Euro PM2013 ; Conference date: 15-09-2013 Through 18-09-2013",

}

TY - GEN

T1 - Microstructure and properties of gas atomized UHCS compacted by HIP and SPS

AU - Lagerbom, Juha

AU - Virta, Jouko

AU - Lotta, Juho

AU - Honkanen, Katri

AU - Hannula, Simo-Pekka

PY - 2013

Y1 - 2013

N2 - 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.

AB - 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.

KW - powder

KW - gas atomization

KW - HIP

UR - https://www.epma.com/dm-europm/author-indexes/239-euro-pm2013-congress-proceedings-author-index/file

UR - https://www.epma.com/publications/euro-pm-proceedings/category/euro-pm2013

M3 - Conference article in proceedings

VL - 1

SP - 193

EP - 198

BT - Proceedings

PB - European Powder Metallurgy Association (EPMA)

CY - Göteborg

T2 - Euro PM2013

Y2 - 15 September 2013 through 18 September 2013

ER -

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

Abstract

Conference

Keywords

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