Effect of Laser Treatment on Intrinsic Mechanical Stresses in Titanium and Some of Its Alloys
Laser surface treatment conducted at different power levels is an option to modify titanium bone implants to produce nano- and microtopography. However, such processing can lead to excess mechanical stress within the surface layer. This research aims to calculate the level of such residual stresses...
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MDPI AG
2023-05-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/13/10/6276 |
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| author | Magdalena Jażdżewska Michał Bartmański Andrzej Zieliński Dominika Beata Kwidzińska |
| author_facet | Magdalena Jażdżewska Michał Bartmański Andrzej Zieliński Dominika Beata Kwidzińska |
| author_sort | Magdalena Jażdżewska |
| collection | DOAJ |
| description | Laser surface treatment conducted at different power levels is an option to modify titanium bone implants to produce nano- and microtopography. However, such processing can lead to excess mechanical stress within the surface layer. This research aims to calculate the level of such residual stresses after the surface processing of Ti grade IV, Ti15Mo, and Ti6Al7Nb alloys with an Nd:YAG laser. Light and scanning electron microscopies (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffractometry (XRD), optical profilography, and nano-indentation tests were applied to characterize the surface zone. The laser processing resulted in a distinct surface pattern and the formation of remelted zones 66–126 µm thick, with roughness values ranging between 0.22 and 1.68 µm. The mechanical properties were weakly dependent on the material composition. The residual stresses caused by the laser treatment were moderate, always tensile, increasing with loading, and was the highest for the Ti15Mo alloy. |
| first_indexed | 2024-03-11T03:58:14Z |
| format | Article |
| id | doaj.art-fb5dc1f455a645dbbbe0b97bc20175ba |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-11T03:58:14Z |
| publishDate | 2023-05-01 |
| publisher | MDPI AG |
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| series | Applied Sciences |
| spelling | doaj.art-fb5dc1f455a645dbbbe0b97bc20175ba2023-11-18T00:23:12ZengMDPI AGApplied Sciences2076-34172023-05-011310627610.3390/app13106276Effect of Laser Treatment on Intrinsic Mechanical Stresses in Titanium and Some of Its AlloysMagdalena Jażdżewska0Michał Bartmański1Andrzej Zieliński2Dominika Beata Kwidzińska3Department of Biomaterials Technology, Institute of Manufacturing and Materials Technology, Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, 80-233 Gdansk, PolandDepartment of Biomaterials Technology, Institute of Manufacturing and Materials Technology, Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, 80-233 Gdansk, PolandDepartment of Biomaterials Technology, Institute of Manufacturing and Materials Technology, Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, 80-233 Gdansk, PolandDepartment of Biomaterials Technology, Institute of Manufacturing and Materials Technology, Faculty of Mechanical Engineering and Ship Technology, Gdańsk University of Technology, 80-233 Gdansk, PolandLaser surface treatment conducted at different power levels is an option to modify titanium bone implants to produce nano- and microtopography. However, such processing can lead to excess mechanical stress within the surface layer. This research aims to calculate the level of such residual stresses after the surface processing of Ti grade IV, Ti15Mo, and Ti6Al7Nb alloys with an Nd:YAG laser. Light and scanning electron microscopies (SEM), energy-dispersive X-ray spectroscopy (EDS), X-ray diffractometry (XRD), optical profilography, and nano-indentation tests were applied to characterize the surface zone. The laser processing resulted in a distinct surface pattern and the formation of remelted zones 66–126 µm thick, with roughness values ranging between 0.22 and 1.68 µm. The mechanical properties were weakly dependent on the material composition. The residual stresses caused by the laser treatment were moderate, always tensile, increasing with loading, and was the highest for the Ti15Mo alloy.https://www.mdpi.com/2076-3417/13/10/6276laser surface treatmenttitanium alloysresidual stressesroughnessmechanical properties |
| spellingShingle | Magdalena Jażdżewska Michał Bartmański Andrzej Zieliński Dominika Beata Kwidzińska Effect of Laser Treatment on Intrinsic Mechanical Stresses in Titanium and Some of Its Alloys Applied Sciences laser surface treatment titanium alloys residual stresses roughness mechanical properties |
| title | Effect of Laser Treatment on Intrinsic Mechanical Stresses in Titanium and Some of Its Alloys |
| title_full | Effect of Laser Treatment on Intrinsic Mechanical Stresses in Titanium and Some of Its Alloys |
| title_fullStr | Effect of Laser Treatment on Intrinsic Mechanical Stresses in Titanium and Some of Its Alloys |
| title_full_unstemmed | Effect of Laser Treatment on Intrinsic Mechanical Stresses in Titanium and Some of Its Alloys |
| title_short | Effect of Laser Treatment on Intrinsic Mechanical Stresses in Titanium and Some of Its Alloys |
| title_sort | effect of laser treatment on intrinsic mechanical stresses in titanium and some of its alloys |
| topic | laser surface treatment titanium alloys residual stresses roughness mechanical properties |
| url | https://www.mdpi.com/2076-3417/13/10/6276 |
| work_keys_str_mv | AT magdalenajazdzewska effectoflasertreatmentonintrinsicmechanicalstressesintitaniumandsomeofitsalloys AT michałbartmanski effectoflasertreatmentonintrinsicmechanicalstressesintitaniumandsomeofitsalloys AT andrzejzielinski effectoflasertreatmentonintrinsicmechanicalstressesintitaniumandsomeofitsalloys AT dominikabeatakwidzinska effectoflasertreatmentonintrinsicmechanicalstressesintitaniumandsomeofitsalloys |