Cargando…

Improving the Surface Integrity of 316L Steel in the Context of Bioimplant Applications

Bioimplants should meet important surface integrity criteria, with the main goal of the manufacturing process to improve wear and corrosion resistance properties. This requires a special approach at the cutting stage. During this research, the impact of the cutting parameters on improving the surfac...

Descripción completa

Detalles Bibliográficos
Autores principales: Szwajka, Krzysztof, Zielińska-Szwajka, Joanna, Trzepieciński, Tomasz
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2023
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180083/
https://www.ncbi.nlm.nih.gov/pubmed/37176341
http://dx.doi.org/10.3390/ma16093460
_version_ 1785041251370795008
author Szwajka, Krzysztof
Zielińska-Szwajka, Joanna
Trzepieciński, Tomasz
author_facet Szwajka, Krzysztof
Zielińska-Szwajka, Joanna
Trzepieciński, Tomasz
author_sort Szwajka, Krzysztof
collection PubMed
description Bioimplants should meet important surface integrity criteria, with the main goal of the manufacturing process to improve wear and corrosion resistance properties. This requires a special approach at the cutting stage. During this research, the impact of the cutting parameters on improving the surface integrity of AISI 316L steel was evaluated. In this context of bioimplant applications, the mean roughness Sa value was obtained in the range of 0.73–4.19 μm. On the basis of the results obtained, a significant effect was observed of both the cutting speed and the feed rate on changes in the microstructure of the near-surface layer. At a cutting speed of 150 m/min, the average grain size was approximately 31 μm. By increasing the cutting speed to 200 m/min, the average grain size increased to approximately 52 μm. The basic austenitic microstructure of AISI 316L steel with typical precipitation of carbides on the grain boundaries was refined at the near-surface layer after the machining process. Changing the cutting speed determined the hardness of the treated and near-surface layers. The maximum value of hardness is reached at a depth of 20 μm and decreases with the depth of measurement. It was also noted that at a depth of up to 240 μm, the maximum hardness of 270–305 HV1 was reached, hence the height of the machining impact zone can be determined, which is approximately 240 μm for almost all machining conditions.
format Online
Article
Text
id pubmed-10180083
institution National Center for Biotechnology Information
language English
publishDate 2023
publisher MDPI
record_format MEDLINE/PubMed
spelling pubmed-101800832023-05-13 Improving the Surface Integrity of 316L Steel in the Context of Bioimplant Applications Szwajka, Krzysztof Zielińska-Szwajka, Joanna Trzepieciński, Tomasz Materials (Basel) Article Bioimplants should meet important surface integrity criteria, with the main goal of the manufacturing process to improve wear and corrosion resistance properties. This requires a special approach at the cutting stage. During this research, the impact of the cutting parameters on improving the surface integrity of AISI 316L steel was evaluated. In this context of bioimplant applications, the mean roughness Sa value was obtained in the range of 0.73–4.19 μm. On the basis of the results obtained, a significant effect was observed of both the cutting speed and the feed rate on changes in the microstructure of the near-surface layer. At a cutting speed of 150 m/min, the average grain size was approximately 31 μm. By increasing the cutting speed to 200 m/min, the average grain size increased to approximately 52 μm. The basic austenitic microstructure of AISI 316L steel with typical precipitation of carbides on the grain boundaries was refined at the near-surface layer after the machining process. Changing the cutting speed determined the hardness of the treated and near-surface layers. The maximum value of hardness is reached at a depth of 20 μm and decreases with the depth of measurement. It was also noted that at a depth of up to 240 μm, the maximum hardness of 270–305 HV1 was reached, hence the height of the machining impact zone can be determined, which is approximately 240 μm for almost all machining conditions. MDPI 2023-04-28 /pmc/articles/PMC10180083/ /pubmed/37176341 http://dx.doi.org/10.3390/ma16093460 Text en © 2023 by the authors. https://creativecommons.org/licenses/by/4.0/Licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution (CC BY) license (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Szwajka, Krzysztof
Zielińska-Szwajka, Joanna
Trzepieciński, Tomasz
Improving the Surface Integrity of 316L Steel in the Context of Bioimplant Applications
title Improving the Surface Integrity of 316L Steel in the Context of Bioimplant Applications
title_full Improving the Surface Integrity of 316L Steel in the Context of Bioimplant Applications
title_fullStr Improving the Surface Integrity of 316L Steel in the Context of Bioimplant Applications
title_full_unstemmed Improving the Surface Integrity of 316L Steel in the Context of Bioimplant Applications
title_short Improving the Surface Integrity of 316L Steel in the Context of Bioimplant Applications
title_sort improving the surface integrity of 316l steel in the context of bioimplant applications
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10180083/
https://www.ncbi.nlm.nih.gov/pubmed/37176341
http://dx.doi.org/10.3390/ma16093460
work_keys_str_mv AT szwajkakrzysztof improvingthesurfaceintegrityof316lsteelinthecontextofbioimplantapplications
AT zielinskaszwajkajoanna improvingthesurfaceintegrityof316lsteelinthecontextofbioimplantapplications
AT trzepiecinskitomasz improvingthesurfaceintegrityof316lsteelinthecontextofbioimplantapplications