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Influence of Interstitial Oxygen on the Tribology of Ti6Al4V

Kümmel, Daniel; Schneider, Johannes; Gumbsch, Peter

Abstract:
Titanium alloys are used for their good mechanical and corrosion properties, but generally experience poor wear behavior. This can effectively be counteracted by a thermal oxidation treatment, reducing wear significantly. Employing a special sample preparation, we study the transition of tribological properties between thermally oxidized and bulk Ti6Al4V on a single sample. While oxygen signal intensity and hardness followed an exponential decay from the surface to bulk material, tribological results showed a step-like transition from low to high friction and wear with increasing distance from the surface. Low wear was associated with minor abrasive marks, whereas high wear showed as severe adhesive material transfer onto the steel counter body. Besides the mechanical property of hardness, also a change in fracture behavior by interstitial oxygen could influence the observed tribological behavior.

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Verlagsausgabe §
DOI: 10.5445/IR/1000124681
Veröffentlicht am 08.12.2020
Cover der Publikation
Zugehörige Institution(en) am KIT Institut für Angewandte Materialien - Computational Materials Science (IAM-CMS)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 09.2020
Sprache Englisch
Identifikator ISSN: 1023-8883, 1573-2711
KITopen-ID: 1000124681
Erschienen in Tribology letters
Verlag Springer
Band 68
Heft 3
Seiten Art. Nr.: 96
Vorab online veröffentlicht am 05.09.2020
Schlagwörter Adhesive wear, Aviation, Boundary lubrication, EDS, Surface modification, Titanium
Nachgewiesen in Dimensions
Scopus
Web of Science
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