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Effects of workpiece microstructure, mechanical properties and machining conditions on tool wear when milling compacted graphite iron
Chalmers University of Technology, Department of Industrial and Materials Science, Gothenburg, Sweden.
Jönköping University, School of Engineering, JTH, Materials and Manufacturing.ORCID iD: 0000-0003-2698-5445
Chalmers University of Technology, Department of Industrial and Materials Science, Gothenburg, Sweden.
Jönköping University, School of Engineering, JTH, Materials and Manufacturing.ORCID iD: 0000-0003-2671-9825
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2018 (English)In: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 410-411, p. 190-201Article in journal (Refereed) Published
Abstract [en]

The aim of the present study was to investigate the tool performance when machining compacted graphite iron (CGI) alloys. A comparison was made between solid solution strengthened CGI including various amounts of silicon (Si-CGI) and the pearlitic-ferritic CGI as a reference material. The emphasis was on examining the influence of microstructure and mechanical properties of the material on tool wear in face milling process. Machining experiments were performed on the engine-like test pieces comprised of solid solution strengthened CGI with three different silicon contents and the reference CGI alloy. The results showed up-to 50% lower flank wear when machining Si-CGI alloys, although with comparable hardness and tensile properties. In-depth analysis of the worn tool surfaces showed that the abrasion and adhesion were the dominant wear mechanisms for all investigated alloys. However, the better tool performance when machining Si-CGI alloys was mainly due to a lower amount of abrasive carbo-nitride particles and the suppression of pearlite formation in the investigated solid solution strengthened alloys.

Place, publisher, year, edition, pages
Elsevier, 2018. Vol. 410-411, p. 190-201
Keywords [en]
Casting, CGI, Machinability, Milling, Solution hardening, Tool wear, Graphite, Iron alloys, Mechanical properties, Microstructure, Milling (machining), Pearlite, Silicon alloys, Solid solutions, Wear of materials, Compacted graphite iron, Machining conditions, Machining experiments, Microstructure and mechanical properties, Pearlite formations, Reference material, Cutting tools
National Category
Metallurgy and Metallic Materials
Identifiers
URN: urn:nbn:se:hj:diva-41217DOI: 10.1016/j.wear.2018.07.005ISI: 000440030600019Scopus ID: 2-s2.0-85050005596OAI: oai:DiVA.org:hj-41217DiVA, id: diva2:1241390
Funder
VINNOVA, GNR 2012_137 2.4.2Knowledge Foundation, GNR 20100218Available from: 2018-08-23 Created: 2018-08-23 Last updated: 2019-02-14Bibliographically approved

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Ghasemi, RohollahOlofsson, JakobJarfors, Anders E.W.

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