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Nano-scale friction of multi-phase powder metallurgy tool steels
Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för ingenjörsvetenskap och fysik, Karlstads universitet, Karlstad, Sweden.
Örebro universitet, Institutionen för naturvetenskap och teknik.ORCID-id: 0000-0002-8144-8821
Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för ingenjörsvetenskap och fysik, Karlstads universitet, Karlstad, Sweden.
Tunnfilmsfysik, Linköpings universitet, Linköping, Sweden.
2015 (engelsk)Inngår i: Advanced Materials Research, ISSN 1022-6680, E-ISSN 1662-8985, Vol. 1119, s. 70-74Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

Friction is a fundamental phenomenon in tribology involving complex mechanisms between thecontacting surfaces. Measurements of friction are often made using devices with substantially largercontact area than dimensions corresponding to microstructural features of the materials. Hence, for multi-phase materials,influence of particular microstructural constituents is not resolved. In the present work, a tribometerwith a contact area in the nano-scale range was used to map friction for different types of tool steelswith different chemical- and phase composition. Owing to the small tip radius, frictionalcharacteristics of primary carbides and the steel matrix were measured and compared. Dependingon chemical composition, a difference was observed where the coefficient of friction wasapproximately twice higher for the steel possessing highest coefficient of friction, including bothcarbides and the steel matrix.

sted, utgiver, år, opplag, sider
Trans Tech Publications, 2015. Vol. 1119, s. 70-74
Emneord [en]
friction, microstructure, tool steel
HSV kategori
Forskningsprogram
Maskinteknik; Fysik
Identifikatorer
URN: urn:nbn:se:oru:diva-58837DOI: 10.4028/www.scientific.net/AMR.1119.70OAI: oai:DiVA.org:oru-58837DiVA, id: diva2:1128262
Tilgjengelig fra: 2017-07-24 Laget: 2017-07-24 Sist oppdatert: 2018-07-09bibliografisk kontrollert

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