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Laser Surface Alloying of Austenitic 316L Steel with Boron and Some Metallic Elements: Microstructure
Austenitic 316L steel is known for its good oxidation resistance and corrosion behavior. However, the poor wear protection is its substantial disadvantage. In this study, laser surface alloying with boron and some metallic elements was used in order to form the surface layers of improved wear behavi...
Autores principales: | , , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2020
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7663681/ https://www.ncbi.nlm.nih.gov/pubmed/33138156 http://dx.doi.org/10.3390/ma13214852 |
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author | Kulka, Michał Mikołajczak, Daria Makuch, Natalia Dziarski, Piotr Przestacki, Damian Panfil-Pryka, Dominika Piasecki, Adam Miklaszewski, Andrzej |
author_facet | Kulka, Michał Mikołajczak, Daria Makuch, Natalia Dziarski, Piotr Przestacki, Damian Panfil-Pryka, Dominika Piasecki, Adam Miklaszewski, Andrzej |
author_sort | Kulka, Michał |
collection | PubMed |
description | Austenitic 316L steel is known for its good oxidation resistance and corrosion behavior. However, the poor wear protection is its substantial disadvantage. In this study, laser surface alloying with boron and some metallic elements was used in order to form the surface layers of improved wear behavior. The microstructure was studied using OM, SEM, XRD, and EDS techniques. The laser-alloyed layers consisted of the only re-melted zone (MZ). The hard ceramic phases (Fe(2)B, Cr(2)B, Ni(2)B, or Ni(3)B borides) occurred in a soft austenitic matrix. The relatively high overlapping (86%) resulted in a uniform thickness and homogeneous microstructure of the layers. All the laser-alloyed layers were free from defects, such as microcracks or gas pores, due to the use of relatively high dilution ratios (above 0.37). The heat-affected zone (HAZ) wasn’t visible in the microstructure because of the extended stability of austenite up to room temperature and no possibility to change this structure during fast cooling. The use of the mixtures of boron and selected metallic elements as the alloying materials caused the diminished laser beam power in order to obtain the layers of acceptable quality. The thickness of laser-alloyed layers (308–432 μm) was significantly higher than that produced using diffusion boriding techniques. |
format | Online Article Text |
id | pubmed-7663681 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2020 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-76636812020-11-14 Laser Surface Alloying of Austenitic 316L Steel with Boron and Some Metallic Elements: Microstructure Kulka, Michał Mikołajczak, Daria Makuch, Natalia Dziarski, Piotr Przestacki, Damian Panfil-Pryka, Dominika Piasecki, Adam Miklaszewski, Andrzej Materials (Basel) Article Austenitic 316L steel is known for its good oxidation resistance and corrosion behavior. However, the poor wear protection is its substantial disadvantage. In this study, laser surface alloying with boron and some metallic elements was used in order to form the surface layers of improved wear behavior. The microstructure was studied using OM, SEM, XRD, and EDS techniques. The laser-alloyed layers consisted of the only re-melted zone (MZ). The hard ceramic phases (Fe(2)B, Cr(2)B, Ni(2)B, or Ni(3)B borides) occurred in a soft austenitic matrix. The relatively high overlapping (86%) resulted in a uniform thickness and homogeneous microstructure of the layers. All the laser-alloyed layers were free from defects, such as microcracks or gas pores, due to the use of relatively high dilution ratios (above 0.37). The heat-affected zone (HAZ) wasn’t visible in the microstructure because of the extended stability of austenite up to room temperature and no possibility to change this structure during fast cooling. The use of the mixtures of boron and selected metallic elements as the alloying materials caused the diminished laser beam power in order to obtain the layers of acceptable quality. The thickness of laser-alloyed layers (308–432 μm) was significantly higher than that produced using diffusion boriding techniques. MDPI 2020-10-29 /pmc/articles/PMC7663681/ /pubmed/33138156 http://dx.doi.org/10.3390/ma13214852 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 Kulka, Michał Mikołajczak, Daria Makuch, Natalia Dziarski, Piotr Przestacki, Damian Panfil-Pryka, Dominika Piasecki, Adam Miklaszewski, Andrzej Laser Surface Alloying of Austenitic 316L Steel with Boron and Some Metallic Elements: Microstructure |
title | Laser Surface Alloying of Austenitic 316L Steel with Boron and Some Metallic Elements: Microstructure |
title_full | Laser Surface Alloying of Austenitic 316L Steel with Boron and Some Metallic Elements: Microstructure |
title_fullStr | Laser Surface Alloying of Austenitic 316L Steel with Boron and Some Metallic Elements: Microstructure |
title_full_unstemmed | Laser Surface Alloying of Austenitic 316L Steel with Boron and Some Metallic Elements: Microstructure |
title_short | Laser Surface Alloying of Austenitic 316L Steel with Boron and Some Metallic Elements: Microstructure |
title_sort | laser surface alloying of austenitic 316l steel with boron and some metallic elements: microstructure |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7663681/ https://www.ncbi.nlm.nih.gov/pubmed/33138156 http://dx.doi.org/10.3390/ma13214852 |
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