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Initiation and propagation of tool wear in turning of titanium alloys - Evaluated in successive sliding wear test
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences. (Tribomaterial)ORCID iD: 0000-0003-2704-5447
Uppsala University, Disciplinary Domain of Science and Technology, Technology, Department of Engineering Sciences, Applied Materials Sciences. (Tribomaterial)
2019 (English)In: Wear, ISSN 0043-1648, E-ISSN 1873-2577, Vol. 426-427, no Part B, p. 1658-1666Article in journal (Refereed) Published
Abstract [en]

Titanium alloys are known to cause significant crater wear on the rake face of cutting inserts when exposed to the fresh chip during cuffing, limiting the lifetime of the tool. Previous studies have shown that wear surfaces on inserts has a crater filled with transferred titanium. The WC grains in the bottom of the crater are depleted of carbon, resulting in a top surface rich in tungsten. To further investigate the initiation of wear in the present study a sliding test, previously developed to imitate the conditions on the rake face during cuffing, was used. The test was performed in interrupted mode, allowing intermediate SEM studies of the tool surface, while successively increasing the sliding distance. A cemented carbide grade, H13A, commonly used for cutting titanium alloys, and titanium alloy Ti6Al4V were used as model materials. The results from the sliding tests showed that both transfer of titanium and wear of the cemented carbide composite occur simultaneously. The wear is shallow and occurs on a very small scale, which adds up to a large crater, which is continuously filled with a smooth layer of titanium.

Place, publisher, year, edition, pages
ELSEVIER SCIENCE SA , 2019. Vol. 426-427, no Part B, p. 1658-1666
Keywords [en]
Sliding test, Titanium alloy, Ti6Al4V, Cemented carbide, Wear mechanism
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Identifiers
URN: urn:nbn:se:uu:diva-382824DOI: 10.1016/j.wear.2019.01.077ISI: 000464585200077OAI: oai:DiVA.org:uu-382824DiVA, id: diva2:1313698
Conference
22nd International Conference on Wear of Materials (WOM), APR 14-18, 2019, Miami, FL
Available from: 2019-05-06 Created: 2019-05-06 Last updated: 2019-05-06Bibliographically approved

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Olander, PetraHeinrichs, Jannica

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