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Dry rolling/sliding wear of nanostructured bainite
Materials Science and Metallurgy, University of Cambridge.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
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.
2014 (English)In: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 316, no 1-2, p. 70-78Article in journal (Refereed) Published
Abstract [en]

The abrasive wear of carbide-free bainitic steel under dry rolling/sliding conditions has been studied. It is demonstrated that this nanostructure, generated by isothermal transformation at 200 °C, has a resistance to wear that supersedes that of other carbide-free bainitic steels transformed at higher temperatures. The experimental results, in combination with a theoretical analysis of rolling/sliding indicates that under the conditions studied, the role of sliding is minimal, so that the maximum shear stresses during contact are generated below the contact surface. Thus, the hardness following testing is found to reach a maximum below the contact surface. The fine scale and associated strength of the structure combats wear during the running-in period, but the volume fraction, stability and morphology of retained austenite plays a significant role during wear, by work-hardening the surface through phase transformation into very hard martensite

Place, publisher, year, edition, pages
2014. Vol. 316, no 1-2, p. 70-78
National Category
Other Materials Engineering Infrastructure Engineering Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Engineering Materials; Structural Engineering; Machine Elements; Centre - Centre for High Performance Steel (CHS)
Identifiers
URN: urn:nbn:se:ltu:diva-10354DOI: 10.1016/j.wear.2014.04.020ISI: 000338605700008Scopus ID: 2-s2.0-84900791444Local ID: 927407c3-4254-4ae2-951c-767d0521e7e8OAI: oai:DiVA.org:ltu-10354DiVA, id: diva2:983296
Note

Validerad; 2014; 20140512 (andbra)

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

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Leiro, AlejandroPrakash, Braham

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