Mechanisms of oxide dependent tribological behavior in Ti / Steel sliding and influence of nanostructured surfaces

The tribological behavior of pure titanium having coarse-grained or nanostructured surfaces has been investigated against a steel ball moved with an alternative motion. The nanostructures were obtained by Surface Mechanical Attrition Treatment (SMAT) both at room and at cryogenic temperatures. An un...

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Main Authors: Maurel Pierre, Weiss Laurent, Bocher Philippe, Fleury Eric, Grosdidier Thierry
Format: Article
Language:English
Published: EDP Sciences 2020-01-01
Series:MATEC Web of Conferences
Online Access:https://www.matec-conferences.org/articles/matecconf/pdf/2020/17/matecconf_ti2019_11094.pdf
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author Maurel Pierre
Weiss Laurent
Bocher Philippe
Fleury Eric
Grosdidier Thierry
author_facet Maurel Pierre
Weiss Laurent
Bocher Philippe
Fleury Eric
Grosdidier Thierry
author_sort Maurel Pierre
collection DOAJ
description The tribological behavior of pure titanium having coarse-grained or nanostructured surfaces has been investigated against a steel ball moved with an alternative motion. The nanostructures were obtained by Surface Mechanical Attrition Treatment (SMAT) both at room and at cryogenic temperatures. An unexpected wear behavior was revealed: the hard steel ball was abraded for all cases even if it was several times harder compared to the Ti surface. This was due to the formation of a third body consisting of hard Ti oxides. Interestingly, important variations of the coefficient of friction were also revealed during the rubbing process. These variations could be separated into three successive stages, each with its specific wear mechanisms. The wear regimes were related to changes in the third body layer formed between the Ti and steel surfaces. SMAT changed the formation kinetics of the third body. The temperature at which the SMAT was conducted also introduced different third body formation kinetics. Important variations in the wear resistance were consequently observed between each surface condition.
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spelling doaj.art-e666ecd80f10430dadcdfe3429ee99bf2022-12-21T20:03:16ZengEDP SciencesMATEC Web of Conferences2261-236X2020-01-013211109410.1051/matecconf/202032111094matecconf_ti2019_11094Mechanisms of oxide dependent tribological behavior in Ti / Steel sliding and influence of nanostructured surfacesMaurel PierreWeiss Laurent0Bocher Philippe1Fleury EricGrosdidier ThierryLaboratory of Microstructure Studies and Mechanics of Materials (LEM3), Lorraine University, CNRS UMR 72 39Laboratoiry of Optimisation of Advanced Processes and Fabrication (LOPFA), École de Technology SupérieureThe tribological behavior of pure titanium having coarse-grained or nanostructured surfaces has been investigated against a steel ball moved with an alternative motion. The nanostructures were obtained by Surface Mechanical Attrition Treatment (SMAT) both at room and at cryogenic temperatures. An unexpected wear behavior was revealed: the hard steel ball was abraded for all cases even if it was several times harder compared to the Ti surface. This was due to the formation of a third body consisting of hard Ti oxides. Interestingly, important variations of the coefficient of friction were also revealed during the rubbing process. These variations could be separated into three successive stages, each with its specific wear mechanisms. The wear regimes were related to changes in the third body layer formed between the Ti and steel surfaces. SMAT changed the formation kinetics of the third body. The temperature at which the SMAT was conducted also introduced different third body formation kinetics. Important variations in the wear resistance were consequently observed between each surface condition.https://www.matec-conferences.org/articles/matecconf/pdf/2020/17/matecconf_ti2019_11094.pdf
spellingShingle Maurel Pierre
Weiss Laurent
Bocher Philippe
Fleury Eric
Grosdidier Thierry
Mechanisms of oxide dependent tribological behavior in Ti / Steel sliding and influence of nanostructured surfaces
MATEC Web of Conferences
title Mechanisms of oxide dependent tribological behavior in Ti / Steel sliding and influence of nanostructured surfaces
title_full Mechanisms of oxide dependent tribological behavior in Ti / Steel sliding and influence of nanostructured surfaces
title_fullStr Mechanisms of oxide dependent tribological behavior in Ti / Steel sliding and influence of nanostructured surfaces
title_full_unstemmed Mechanisms of oxide dependent tribological behavior in Ti / Steel sliding and influence of nanostructured surfaces
title_short Mechanisms of oxide dependent tribological behavior in Ti / Steel sliding and influence of nanostructured surfaces
title_sort mechanisms of oxide dependent tribological behavior in ti steel sliding and influence of nanostructured surfaces
url https://www.matec-conferences.org/articles/matecconf/pdf/2020/17/matecconf_ti2019_11094.pdf
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