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Load effect on scratch micro-mechanisms of solution strengthened Compacted Graphite Irons
Jönköping University, School of Engineering, JTH, Materials and Manufacturing.ORCID iD: 0000-0003-2698-5445
Division of Production and Materials Engineering, Department of Mechanical Engineering, Lund University, Lund, Sweden.
Division of Production and Materials Engineering, Department of Mechanical Engineering, Lund University, Lund, Sweden.
Jönköping University, School of Engineering, JTH, Materials and Manufacturing.ORCID iD: 0000-0002-0101-0062
2019 (English)In: Tribology International, ISSN 0301-679X, E-ISSN 1879-2464, Vol. 133, p. 182-192Article in journal (Refereed) Published
Abstract [en]

This study investigates the scratch load effect, from 100 to 2000 mN, on micro-mechanisms involved during scratching. A pearlitic and three ferritic Compacted Graphite Irons (CGI) solution strengthened through addition of 3.66, 4.09, and 4.59 Si wt% were investigated. Good correlation was observed between hardness measurements, tensile testing, and scratch results explaining the influence of matrix characteristics on scratch behaviour for investigated alloys. A significant matrix deformation, change in frictional force and scratch coefficient of friction was observed by increase in scratch load. In all cases, microscratch depth and width increased significantly with load increasing, however pearlitic CGI showed most profound deformation, while the maximum and minimum scratch resistances were observed for high-Si ferritic and pearlitic CGI alloys, respectively.

Place, publisher, year, edition, pages
Elsevier, 2019. Vol. 133, p. 182-192
Keywords [en]
CGI, Si solution-strengthening, Scratch testing, Deformation micro-mechanisms during scratching
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:hj:diva-42653DOI: 10.1016/j.triboint.2019.01.010ISI: 000458943500018Scopus ID: 2-s2.0-85059818887Local ID: PP JTH 2019 embargo 24OAI: oai:DiVA.org:hj-42653DiVA, id: diva2:1279161
Available from: 2019-01-16 Created: 2019-01-16 Last updated: 2019-03-13Bibliographically approved

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The full text will be freely available from 2021-01-08 00:00
Available from 2021-01-08 00:00

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Ghasemi, RohollahJarfors, Anders E.W.

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