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Wear characteristics of surface hardened ausferritic Si-steel
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.
Luleå tekniska universitet.
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Machine Elements.ORCID iD: 0000-0003-1454-1118
2007 (English)In: Journal of Iron and Steel Research International, ISSN 1006-706X, E-ISSN 2210-3988, Vol. 14, no 1, supp 1, p. 245-248Article in journal (Refereed) Published
Abstract [en]

High strength steels can be produced by austempering of Si-containing steels. It is possible to achieve high toughness and good wear resistance in these steels. Surface hardening of this group of steels can further increase the surface hardness and wear resistance and in combination with high strength in the bulk, also the fatigue strength. Surface hardening by laser-hardening has been performed on steel 55Si7 after austempering of the steel in order to create a ferritic-austenitic carbide free microstructure. Tempering effects and hardness values have been studied. Optical as well as scanning electron microscopy has been used together with x-ray diffractometry in the characterization of the micro-structural changes. Wear resistance testing of austempered and laser hardened samples respectively of the Si-alloyed steel have been reported and also compared with that of the conventional Cr-alloyed steel. The results of the specific phase transformation from austenite to martensite during wear process will be reported

Place, publisher, year, edition, pages
2007. Vol. 14, no 1, supp 1, p. 245-248
National Category
Other Materials Engineering Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Research subject
Engineering Materials; Machine Elements
Identifiers
URN: urn:nbn:se:ltu:diva-3520DOI: 10.1016/S1006-706X(08)60087-4Local ID: 158c2d70-9e76-11dc-9810-000ea68e967bOAI: oai:DiVA.org:ltu-3520DiVA: diva2:976378
Note
Validerad; 2007; 20071129 (brap)Available from: 2016-09-29 Created: 2016-09-29 Last updated: 2018-01-10Bibliographically approved

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Vuorinen, EsaLundmark, JonasPrakash, Braham
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