Surface and Tribological Properties of Powder Metallurgical Cp-Ti Titanium Alloy Modified by Shot Peening

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dc.contributor.authorAvcu Y.Y.
dc.contributor.authorIakovakis E.
dc.contributor.authorGuney M.
dc.contributor.authorÇalım E.
dc.contributor.authorÖzkılınç A.
dc.contributor.authorAbakay E.
dc.contributor.authorSönmez F.
dc.contributor.authorKoç F.G.
dc.contributor.authorYamanoğlu R.
dc.contributor.authorCengiz A.
dc.contributor.authorAvcu E.
dc.date.accessioned2024-07-22T08:03:32Z
dc.date.available2024-07-22T08:03:32Z
dc.date.issued2023
dc.description.abstractThe present study reveals for the first time the dry sliding wear behavior of a powder metallurgical pure titanium alloy (Cp-Ti) modified by shot peening. Cp-Ti samples were manufactured via powder metallurgy, and then their surface and subsurface features were modified using a custom-made, fully automated shot-peening system. The texture isotropy rate and the highest orientation angle of the shot-peened samples were 71.5% and 36°, respectively. The Abbott curves of the shot-peened surfaces revealed that the most common areal roughness value was 5.177 μm, with a frequency of 8.1%. Shot-peened surfaces exhibited an ~20% lower wear rate than unpeened surfaces under dry sliding wear, whereas the coefficient of friction was the same for both surfaces. Micro-ploughing, micro-cutting, oxidation, and three-body abrasion wear mechanisms were observed on the shot-peened and unpeened surfaces. High resolution 3D surface topographies of worn unpeened and shot-peened surfaces revealed micro-scratches and inhomogeneities along wear tracks, which are indicative of three-body abrasion mechanisms during contact. In addition, vertical and horizontal microcracks were visible just beneath the wear track, suggesting a clear indication of plastic deformation during contact. The cross-sectional hardness maps of shot-peened samples revealed the formation of a work-hardened surface layer with shot peening, which improved the wear resistance. These findings support that shot peening can be a useful tool to modify the surface and tribological properties of powder metallurgical Cp-Ti alloys. © 2023 by the authors.
dc.identifier.DOI-ID10.3390/coatings13010089
dc.identifier.issn20796412
dc.identifier.urihttp://akademikarsiv.cbu.edu.tr:4000/handle/123456789/12335
dc.language.isoEnglish
dc.publisherMDPI
dc.rightsAll Open Access; Gold Open Access
dc.titleSurface and Tribological Properties of Powder Metallurgical Cp-Ti Titanium Alloy Modified by Shot Peening
dc.typeArticle

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