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Nano-scale friction of multi-phase powder metallurgy tool steels
Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för ingenjörsvetenskap och fysik, Karlstad, Sweden.
Örebro University, School of Science and Technology.ORCID iD: 0000-0002-8144-8821
Karlstads universitet, Fakulteten för hälsa, natur- och teknikvetenskap (from 2013), Institutionen för ingenjörsvetenskap och fysik, Karlstad, Sweden.
Linköpings universitet, Tunnfilmsfysik, Linköping, Sweden.
2015 (English)In: Advanced Materials Research, ISSN 1022-6680, E-ISSN 1662-8985, Vol. 1119, 70-74 p.Article in journal (Refereed) 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.

Place, publisher, year, edition, pages
Trans Tech Publications, 2015. Vol. 1119, 70-74 p.
Keyword [en]
friction, microstructure, tool steel
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear) Mechanical Engineering Materials Engineering
Research subject
Mechanical Engineering; Physics
Identifiers
URN: urn:nbn:se:oru:diva-58837DOI: 10.4028/www.scientific.net/AMR.1119.70OAI: oai:DiVA.org:oru-58837DiVA: diva2:1128262
Available from: 2017-07-24 Created: 2017-07-24 Last updated: 2018-01-13Bibliographically approved

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Karlsson, Patrik

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