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Influence of Microstructure and Chemical Composition on Microhardness and Wear Properties of Laser Borided Monel 400

In this study, wear properties of Monel 400 after laser alloying with boron are described. Surfaces were prepared by covering them with boron paste layers of two different thicknesses (100 µm and 200 μm) and re-melting using diode laser. Laser beam power density was equal to 178.3 kW/cm(2). Two lase...

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Autores principales: Kukliński, Mateusz, Bartkowska, Aneta, Przestacki, Damian, Kinal, Grzegorz
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7766397/
https://www.ncbi.nlm.nih.gov/pubmed/33339417
http://dx.doi.org/10.3390/ma13245757
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author Kukliński, Mateusz
Bartkowska, Aneta
Przestacki, Damian
Kinal, Grzegorz
author_facet Kukliński, Mateusz
Bartkowska, Aneta
Przestacki, Damian
Kinal, Grzegorz
author_sort Kukliński, Mateusz
collection PubMed
description In this study, wear properties of Monel 400 after laser alloying with boron are described. Surfaces were prepared by covering them with boron paste layers of two different thicknesses (100 µm and 200 μm) and re-melting using diode laser. Laser beam power density was equal to 178.3 kW/cm(2). Two laser beam scanning velocities were chosen for the process: 5 m/min and 50 m/min. Surfaces alloyed with boron were investigated in terms of wear resistance, and the surface of untreated Monel 400 was examined for comparison. Wear tests were performed using counterspecimen made from steel 100Cr6 and water as a lubricant. Both quantitative and qualitative analysis of surfaces after wear test are described in this paper. Additionally, microstructures and properties of obtained laser alloyed surfaces are presented. It was found that the wear resistance increased from four to tens of times, depending on parameters of the laser boriding process. The wear mechanism was mainly adhesive for surfaces alloyed with initial boron layer 100 µm thick and evolves to abrasive with increasing boron content and laser beam scanning velocity. Iron particles detached from counterspecimens were detected on each borided surface after the wear test, and it was found that the harder the surface the less built-ups are present. Moreover, adhered iron particles oxidized during the wear test.
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spelling pubmed-77663972020-12-28 Influence of Microstructure and Chemical Composition on Microhardness and Wear Properties of Laser Borided Monel 400 Kukliński, Mateusz Bartkowska, Aneta Przestacki, Damian Kinal, Grzegorz Materials (Basel) Article In this study, wear properties of Monel 400 after laser alloying with boron are described. Surfaces were prepared by covering them with boron paste layers of two different thicknesses (100 µm and 200 μm) and re-melting using diode laser. Laser beam power density was equal to 178.3 kW/cm(2). Two laser beam scanning velocities were chosen for the process: 5 m/min and 50 m/min. Surfaces alloyed with boron were investigated in terms of wear resistance, and the surface of untreated Monel 400 was examined for comparison. Wear tests were performed using counterspecimen made from steel 100Cr6 and water as a lubricant. Both quantitative and qualitative analysis of surfaces after wear test are described in this paper. Additionally, microstructures and properties of obtained laser alloyed surfaces are presented. It was found that the wear resistance increased from four to tens of times, depending on parameters of the laser boriding process. The wear mechanism was mainly adhesive for surfaces alloyed with initial boron layer 100 µm thick and evolves to abrasive with increasing boron content and laser beam scanning velocity. Iron particles detached from counterspecimens were detected on each borided surface after the wear test, and it was found that the harder the surface the less built-ups are present. Moreover, adhered iron particles oxidized during the wear test. MDPI 2020-12-16 /pmc/articles/PMC7766397/ /pubmed/33339417 http://dx.doi.org/10.3390/ma13245757 Text en © 2020 by the authors. 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 (http://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Kukliński, Mateusz
Bartkowska, Aneta
Przestacki, Damian
Kinal, Grzegorz
Influence of Microstructure and Chemical Composition on Microhardness and Wear Properties of Laser Borided Monel 400
title Influence of Microstructure and Chemical Composition on Microhardness and Wear Properties of Laser Borided Monel 400
title_full Influence of Microstructure and Chemical Composition on Microhardness and Wear Properties of Laser Borided Monel 400
title_fullStr Influence of Microstructure and Chemical Composition on Microhardness and Wear Properties of Laser Borided Monel 400
title_full_unstemmed Influence of Microstructure and Chemical Composition on Microhardness and Wear Properties of Laser Borided Monel 400
title_short Influence of Microstructure and Chemical Composition on Microhardness and Wear Properties of Laser Borided Monel 400
title_sort influence of microstructure and chemical composition on microhardness and wear properties of laser borided monel 400
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7766397/
https://www.ncbi.nlm.nih.gov/pubmed/33339417
http://dx.doi.org/10.3390/ma13245757
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