Tribological properties of AlTIN coating in sliding contact with Ti6Al4V: A helpful tool for disentangling the phenomena complexity during real turning operations

Vincenzo Tebaldo, Lauri Kilpi, Helena Ronkainen, Maria Giulia Faga (Corresponding Author)

Research output: Contribution to journalArticleScientificpeer-review

1 Citation (Scopus)

Abstract

The study focuses on the evaluation of the parameters affecting friction, wear performance and mechanisms of uncoated and AlTiN coated WC-Co against Ti6Al4V. To this purpose tribological and turning tests were carried out. The tribological tests highlighted that the friction coefficient increased by increasing temperature, while decreased by enhancing sliding speed. Titanium transfer on both coated and uncoated balls was observed, indicating that adhesion phenomena occurred in large extent. As the main effect, AlTiN hindered Ti6Al4V adhesion, thus increasing the friction coefficient, which was linearly proportional to the amount of material transfer from the titanium alloy to the ball surface. Analogously, craterisation phenomena, usually caused by adhesion, were less evident in turning operation when using AlTiN coated tools. Also the highest temperature at the workpiece-cutting tool interface could be partially explained by the highest friction coefficient observed for AlTiN materials.

Original languageEnglish
Pages (from-to)71-80
Number of pages10
JournalTribology International
Volume123
DOIs
Publication statusPublished - 1 Jul 2018
MoE publication typeA1 Journal article-refereed

Fingerprint

sliding contact
coefficient of friction
adhesion
Friction
coatings
Coatings
Adhesion
balls
titanium alloys
sliding
Cutting tools
friction
titanium
Titanium
Titanium alloys
evaluation
Wear of materials
Temperature
titanium alloy (TiAl6V4)
temperature

Keywords

  • AlTiN coating
  • Ball on disc
  • Titanium alloy
  • Turning tests

Cite this

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title = "Tribological properties of AlTIN coating in sliding contact with Ti6Al4V: A helpful tool for disentangling the phenomena complexity during real turning operations",
abstract = "The study focuses on the evaluation of the parameters affecting friction, wear performance and mechanisms of uncoated and AlTiN coated WC-Co against Ti6Al4V. To this purpose tribological and turning tests were carried out. The tribological tests highlighted that the friction coefficient increased by increasing temperature, while decreased by enhancing sliding speed. Titanium transfer on both coated and uncoated balls was observed, indicating that adhesion phenomena occurred in large extent. As the main effect, AlTiN hindered Ti6Al4V adhesion, thus increasing the friction coefficient, which was linearly proportional to the amount of material transfer from the titanium alloy to the ball surface. Analogously, craterisation phenomena, usually caused by adhesion, were less evident in turning operation when using AlTiN coated tools. Also the highest temperature at the workpiece-cutting tool interface could be partially explained by the highest friction coefficient observed for AlTiN materials.",
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author = "Vincenzo Tebaldo and Lauri Kilpi and Helena Ronkainen and Faga, {Maria Giulia}",
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Tribological properties of AlTIN coating in sliding contact with Ti6Al4V : A helpful tool for disentangling the phenomena complexity during real turning operations. / Tebaldo, Vincenzo; Kilpi, Lauri; Ronkainen, Helena; Faga, Maria Giulia (Corresponding Author).

In: Tribology International, Vol. 123, 01.07.2018, p. 71-80.

Research output: Contribution to journalArticleScientificpeer-review

TY - JOUR

T1 - Tribological properties of AlTIN coating in sliding contact with Ti6Al4V

T2 - A helpful tool for disentangling the phenomena complexity during real turning operations

AU - Tebaldo, Vincenzo

AU - Kilpi, Lauri

AU - Ronkainen, Helena

AU - Faga, Maria Giulia

PY - 2018/7/1

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N2 - The study focuses on the evaluation of the parameters affecting friction, wear performance and mechanisms of uncoated and AlTiN coated WC-Co against Ti6Al4V. To this purpose tribological and turning tests were carried out. The tribological tests highlighted that the friction coefficient increased by increasing temperature, while decreased by enhancing sliding speed. Titanium transfer on both coated and uncoated balls was observed, indicating that adhesion phenomena occurred in large extent. As the main effect, AlTiN hindered Ti6Al4V adhesion, thus increasing the friction coefficient, which was linearly proportional to the amount of material transfer from the titanium alloy to the ball surface. Analogously, craterisation phenomena, usually caused by adhesion, were less evident in turning operation when using AlTiN coated tools. Also the highest temperature at the workpiece-cutting tool interface could be partially explained by the highest friction coefficient observed for AlTiN materials.

AB - The study focuses on the evaluation of the parameters affecting friction, wear performance and mechanisms of uncoated and AlTiN coated WC-Co against Ti6Al4V. To this purpose tribological and turning tests were carried out. The tribological tests highlighted that the friction coefficient increased by increasing temperature, while decreased by enhancing sliding speed. Titanium transfer on both coated and uncoated balls was observed, indicating that adhesion phenomena occurred in large extent. As the main effect, AlTiN hindered Ti6Al4V adhesion, thus increasing the friction coefficient, which was linearly proportional to the amount of material transfer from the titanium alloy to the ball surface. Analogously, craterisation phenomena, usually caused by adhesion, were less evident in turning operation when using AlTiN coated tools. Also the highest temperature at the workpiece-cutting tool interface could be partially explained by the highest friction coefficient observed for AlTiN materials.

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