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High-temperature friction and wear characteristics of hardened ultra-high-strength boron steel
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Maskinelement.ORCID-id: 0000-0003-1454-1118
2010 (Engelska)Ingår i: Proceedings of the Institution of mechanical engineers. Part J, journal of engineering tribology, ISSN 1350-6501, E-ISSN 2041-305X, Vol. 224, nr 10, s. 1139-1151Artikel i tidskrift (Refereegranskat) 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.

Ort, förlag, år, upplaga, sidor
2010. Vol. 224, nr 10, s. 1139-1151
Nationell ämneskategori
Tribologi (ytteknik omfattande friktion, nötning och smörjning)
Forskningsämne
Maskinelement; Centrumbildning - Centrum för högpresterande stål (CHS)
Identifikatorer
URN: urn:nbn:se:ltu:diva-16084DOI: 10.1243/13506501JET737ISI: 000281913200009Scopus ID: 2-s2.0-77956961871Lokalt ID: fab07cd0-c4b1-11df-a707-000ea68e967bOAI: oai:DiVA.org:ltu-16084DiVA, id: diva2:989060
Anmärkning

Validerad; 2010; 20100920 (jenhar)

Tillgänglig från: 2016-09-29 Skapad: 2016-09-29 Senast uppdaterad: 2019-03-29Bibliografiskt granskad

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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
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