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High-temperature friction and wear characteristics of hardened ultra-high-strength boron steel
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0003-1454-1118
2010 (English)In: Proceedings of the Institution of mechanical engineers. Part J, journal of engineering tribology, ISSN 1350-6501, E-ISSN 2041-305X, Vol. 224, no 10, p. 1139-1151Article in journal (Refereed) Published
Abstract [en]

The usage of ultra-high-strength boron steel (UHSS) in automotive industry has increased rapidly in the recent past. Forming of UHSS components is performed at elevated temperatures, which also offers the possibility of hardening through quenching directly after forming. However, the influence of hardening on friction and wear during relative sliding between the tool and the workpiece is unclear. Therefore, the friction and wear characteristics at elevated temperatures of hardened and unhardened UHSS and tool steel pairs are investigated in this study. The results show that both friction and wear at all the investigated temperatures are affected by hardening of the UHSS. For uncoated UHSS, the hardening resulted in lower friction and the tool wear increased at low temperatures, but was not affected at elevated temperatures. This was attributed to the higher hardness after hardening combined with the presence of an oxide scale on the UHSS after heating and quenching. For Al-Si-coated UHSS, the hardening reduced friction and tool steel wear at elevated temperatures, and also reduced the wear of the Al-Si-coated high-strength steel at low temperature mainly owing to the formation of an intermetallic layer on the Al-Si-coated UHSS surface after exposure to elevated temperatures.

Place, publisher, year, edition, pages
2010. Vol. 224, no 10, p. 1139-1151
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-16084DOI: 10.1243/13506501JET737ISI: 000281913200009Scopus ID: 2-s2.0-77956961871Local ID: fab07cd0-c4b1-11df-a707-000ea68e967bOAI: oai:DiVA.org:ltu-16084DiVA, id: diva2:989060
Note

Validerad; 2010; 20100920 (jenhar)

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

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Hardell, JensPelcastre, LeonardoPrakash, Braham

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Proceedings of the Institution of mechanical engineers. Part J, journal of engineering tribology
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)

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