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Standing contact fatigue analyse of steels with different microstructures
Luleå University of Technology, Department of Engineering Sciences and Mathematics, Material Science.ORCID iD: 0000-0002-9100-7982
Infotech Enterprises Limited, Engineering Company, Hyderabad.
Department of Materials Science and Engineering, Saarland University, Saarbrücken.
Open University, Milton Keynes.
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2014 (English)In: Materials Structure & Micromechanics of Fracture VII: 7th International Conference on Materials Structure and Micromechanics of Fracture, MSMF 2013; Brno; Czech Republic; 1 July - 3 July 2013 / [ed] Pavel Šandera, Stafa-Zurich: Trans Tech Publications Inc., 2014, p. 622-626Conference paper, Published paper (Refereed)
Abstract [en]

A Standing Contact Fatigue (SCF) test set up has been developed in order to facilitate quick testing of contact fatigue resistance of material surfaces. In this method the sample is pressed against a hard ball rapidly and the resulting crack formation is studied in order to evaluate the SCF resistance. Induction hardened surfaces of cam-ring steel and steels with pearlitic, martensitic, bainitic, ausferritic and quench and tempered microstructures have been studied. Characterization was performed by optical microscopy, scanning electron microscopy and hardness measurements. Ring-cone cracks were found at the edge of the indentations but inside the indent in the surface hardened cam-ring steel samples. Sectional views revealed that these cracks also grow underneath the indentation. Radial cracks were found in non-surface hardened samples. The test of the SCF resistance of steels with different microstructures showed that the ausferritic microstructures tested shoved better SCF resistance than the quench and tempered samples with similar hardness. A comparison between different tempering temperatures of surface hardened steels showed that samples tempered at the higher temperature 240 °C resulted in better SCF resistance

Place, publisher, year, edition, pages
Stafa-Zurich: Trans Tech Publications Inc., 2014. p. 622-626
Series
Key Engineering Materials, ISSN 1013-9826 ; 592-593
National Category
Other Materials Engineering
Research subject
Engineering Materials
Identifiers
URN: urn:nbn:se:ltu:diva-29940DOI: 10.4028/www.scientific.net/KEM.592-593.622ISI: 000336694400141Scopus ID: 2-s2.0-84891874451Local ID: 3928c470-3ae0-4b3d-8e80-5e0f7085031eISBN: 9783037859346 (print)OAI: oai:DiVA.org:ltu-29940DiVA, id: diva2:1003167
Conference
International Conference on Materials Structure and Micromechanics of Fracture : 01/07/2013 - 03/07/2013
Note
Godkänd; 2014; 20140127 (andbra)Available from: 2016-09-30 Created: 2016-09-30 Last updated: 2018-07-10Bibliographically approved

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