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<p>This article presents the research results on the production of laser-cladded Inconel-625 in situ composite coatings on the S355JR substrate by addition of titanium and graphite powders to pure Inconel 625 alloy powder mixture for increased hardness and erosive wear resistance of the coatings. The research featured in the article includes penetrant testing, macro-, and microscopic observations of produced coatings, phase and chemical composition analysis, hardness and solid particle erosion tests. The results showed that the addition of titanium and graphite powders resulted in the composite microstructure formation by precipitation of Ti, Nb, Mo, and C-rich blocky and eutectic particles during crystallization. The conducted tests revealed that the microstructure change resulted in an increase in hardness and erosive wear resistance by 27% and 30%, respectively.</p>
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This article presents the research results on the production of laser-cladded Inconel-625 in situ composite coatings on the S355JR substrate by addition of titanium and graphite powders to pure Inconel 625 alloy powder mixture for increased hardness and erosive wear resistance of the coatings. The research featured in the article includes penetrant testing, macro-, and microscopic observations of produced coatings, phase and chemical composition analysis, hardness and solid particle erosion tests. The results showed that the addition of titanium and graphite powders resulted in the composite microstructure formation by precipitation of Ti, Nb, Mo, and C-rich blocky and eutectic particles during crystallization. The conducted tests revealed that the microstructure change resulted in an increase in hardness and erosive wear resistance by 27% and 30%, respectively.

Structure and properties of laser-cladded Inconel 625-based in situ composite coatings on S355JR substrate modified with Ti and C powders

Materials Science-Poland

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

This article presents the research results on the production of laser-cladded Inconel-625 in situ composite coatings on the S355JR substrate by addition of...

Structure and properties of laser-cladded Inconel 625-based in situ composite coatings on S355JR substrate modified with Ti and C powders

Published Online: Mar 07, 2023

Page range: 14 - 27

Received: Dec 20, 2022

Accepted: Jan 08, 2023

DOI: https://doi.org/10.2478/msp-2022-0039

Keywords
Inconel 625, composite coating, erosive wear, microstructure, hardness

© 2022 Tomasz Poloczek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Structure and properties of laser-cladded Inconel 625-based in situ composite coatings on S355JR substrate modified with Ti and C powders

Published Online: Mar 07, 2023

Page range: 14 - 27

Received: Dec 20, 2022

Accepted: Jan 08, 2023

DOI: https://doi.org/10.2478/msp-2022-0039

KeywordsInconel 625, composite coating, erosive wear, microstructure, hardness

© 2022 Tomasz Poloczek et al., published by Sciendo

This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International License.

Keywords
Inconel 625, composite coating, erosive wear, microstructure, hardness