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Dry rolling/sliding wear of nanostructured pearlite
Materials Science and Metallurgy, University of Cambridge.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0003-1454-1118
Materials Science and Metallurgy, University of Cambridge.
2015 (English)In: Materials Science and Technology, ISSN 0267-0836, E-ISSN 1743-2847, Vol. 31, no 14, p. 1735-1744Article in journal (Refereed) Published
Abstract [en]

The dry rolling-sliding wear behaviour of pearlite that has an interlamellar spacing of just 85 nm has been characterised. Its wear resistance is found to be comparable to that of much harder bainitic steels. Microstructural observations indicate that there is substantial plastic deformation of both ferrite and cementite components of pearlite in the vicinity of the wear surface. Plasticity is not expected from Hertzian analysis that assumes a smooth contact surface. Instead, it is likely to be a consequence of exaggerated stresses due to surface roughness. The material remains ductile to shear strains in the order of 4. Diffraction data indicate that the coherent domain size is reduced to about half the interlamellar spacing and that some of the cementite may dissolve and contribute to the expansion of the lattice parameter of ferrite

Place, publisher, year, edition, pages
2015. Vol. 31, no 14, p. 1735-1744
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Machine Elements; Centre - Centre for High Performance Steel (CHS)
Identifiers
URN: urn:nbn:se:ltu:diva-12740DOI: 10.1179/1743284714Y.0000000751ISI: 000366671200007Scopus ID: 2-s2.0-84951027724Local ID: be7ad523-628e-491d-86b1-3c2bd8fba7a8OAI: oai:DiVA.org:ltu-12740DiVA, id: diva2:985691
Note

Validerad; 2016; Nivå 2; 20160107 (andbra)

Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2019-03-29Bibliographically approved

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