Effect of post-deposition solution treatment and ageing on improving interfacial adhesion strength of cold sprayed Ti6Al4V coatings

Dibakor Boruah; Xiang Zhang

doi:10.3390/met11122038

Effect of post-deposition solution treatment and ageing on improving interfacial adhesion strength of cold sprayed Ti6Al4V coatings

Dibakor Boruah, Xiang Zhang

Centre for Manufacturing and Materials

Ghent University

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

64 Downloads (Pure)

Abstract

This study aims at investigating the effect of post-deposition solution treatment and ageing (STA) on improving the interfacial adhesion strength in cold spray (CS) Ti6Al4V coatings de-posited on Ti6Al4V substrates, measured by the adhesive-free collar-pin pull-off (CPP) test. Solution treatment was performed at 940 °C for 1 h and ageing was carried out at 480 °C for 8 h. Investigations were carried out for specimens with three different pre-treatments of the substrate surface, namely grit-blasted, as-machined (faced on lathe machine), and ground. Additionally, the effect of post-deposition STA was studied in terms of phase analysis, microstructure, and porosity level. It was observed that STA led to complete interfacial mixing resulting in significantly improved adhesion strength (by more than 520%) with the maximum measured value of greater than 766 MPa for ground substrates, reaching 81% of the ultimate tensile strength of mill annealed Ti6Al4V.

Original language	English
Article number	2038
Number of pages	14
Journal	Metals
Volume	11
Issue number	12
DOIs	https://doi.org/10.3390/met11122038
Publication status	Published - 15 Dec 2021

Bibliographical note

This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

Keywords

Additive manufacturing
Adhesion strength
Coatings
Cold spray
Heat treatment
Repairs
Ti6Al4V
Titanium alloy

ASJC Scopus subject areas

Materials Science(all)
Metals and Alloys

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10.3390/met11122038Licence: CC BY

PublishedFinal published version, 6.93 MBLicence: CC BY

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title = "Effect of post-deposition solution treatment and ageing on improving interfacial adhesion strength of cold sprayed Ti6Al4V coatings",

abstract = "This study aims at investigating the effect of post-deposition solution treatment and ageing (STA) on improving the interfacial adhesion strength in cold spray (CS) Ti6Al4V coatings de-posited on Ti6Al4V substrates, measured by the adhesive-free collar-pin pull-off (CPP) test. Solution treatment was performed at 940 °C for 1 h and ageing was carried out at 480 °C for 8 h. Investigations were carried out for specimens with three different pre-treatments of the substrate surface, namely grit-blasted, as-machined (faced on lathe machine), and ground. Additionally, the effect of post-deposition STA was studied in terms of phase analysis, microstructure, and porosity level. It was observed that STA led to complete interfacial mixing resulting in significantly improved adhesion strength (by more than 520%) with the maximum measured value of greater than 766 MPa for ground substrates, reaching 81% of the ultimate tensile strength of mill annealed Ti6Al4V.",

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AU - Boruah, Dibakor

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N1 - This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited

PY - 2021/12/15

Y1 - 2021/12/15

N2 - This study aims at investigating the effect of post-deposition solution treatment and ageing (STA) on improving the interfacial adhesion strength in cold spray (CS) Ti6Al4V coatings de-posited on Ti6Al4V substrates, measured by the adhesive-free collar-pin pull-off (CPP) test. Solution treatment was performed at 940 °C for 1 h and ageing was carried out at 480 °C for 8 h. Investigations were carried out for specimens with three different pre-treatments of the substrate surface, namely grit-blasted, as-machined (faced on lathe machine), and ground. Additionally, the effect of post-deposition STA was studied in terms of phase analysis, microstructure, and porosity level. It was observed that STA led to complete interfacial mixing resulting in significantly improved adhesion strength (by more than 520%) with the maximum measured value of greater than 766 MPa for ground substrates, reaching 81% of the ultimate tensile strength of mill annealed Ti6Al4V.

AB - This study aims at investigating the effect of post-deposition solution treatment and ageing (STA) on improving the interfacial adhesion strength in cold spray (CS) Ti6Al4V coatings de-posited on Ti6Al4V substrates, measured by the adhesive-free collar-pin pull-off (CPP) test. Solution treatment was performed at 940 °C for 1 h and ageing was carried out at 480 °C for 8 h. Investigations were carried out for specimens with three different pre-treatments of the substrate surface, namely grit-blasted, as-machined (faced on lathe machine), and ground. Additionally, the effect of post-deposition STA was studied in terms of phase analysis, microstructure, and porosity level. It was observed that STA led to complete interfacial mixing resulting in significantly improved adhesion strength (by more than 520%) with the maximum measured value of greater than 766 MPa for ground substrates, reaching 81% of the ultimate tensile strength of mill annealed Ti6Al4V.

KW - Additive manufacturing

KW - Adhesion strength

KW - Coatings

KW - Cold spray

KW - Heat treatment

KW - Repairs

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KW - Titanium alloy

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ER -

Effect of post-deposition solution treatment and ageing on improving interfacial adhesion strength of cold sprayed Ti6Al4V coatings

Abstract

Bibliographical note

Keywords

ASJC Scopus subject areas

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Correction: Boruah, D.; Zhang, X. Effect of Post-Deposition Solution Treatment and Ageing on Improving Interfacial Adhesion Strength of Cold Sprayed Ti6Al4V Coatings. Metals 2021, 11, 2038

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