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Welding Defect and Mechanical Properties of Nanosecond Laser Cleaning 6005A Aluminum Alloy

Nanosecond laser cleaning effectively removes oxide film and dirt from the surface of aluminum body parts for rail transit, as well as improving surface properties. The effect of laser cleaning on the quality of weld was studied in detail for different scanning frequencies and cleaning speeds. The e...

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Detalles Bibliográficos
Autores principales: Zhang, Yuelai, Yao, Qi, Long, Weifeng, Wang, Chunming, Lin, Ji, Liu, Zehui
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2022
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9657713/
https://www.ncbi.nlm.nih.gov/pubmed/36363433
http://dx.doi.org/10.3390/ma15217841
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author Zhang, Yuelai
Yao, Qi
Long, Weifeng
Wang, Chunming
Lin, Ji
Liu, Zehui
author_facet Zhang, Yuelai
Yao, Qi
Long, Weifeng
Wang, Chunming
Lin, Ji
Liu, Zehui
author_sort Zhang, Yuelai
collection PubMed
description Nanosecond laser cleaning effectively removes oxide film and dirt from the surface of aluminum body parts for rail transit, as well as improving surface properties. The effect of laser cleaning on the quality of weld was studied in detail for different scanning frequencies and cleaning speeds. The effect of post-weld laser cleaning on weld quality was investigated. After laser cleaning at different parameters, the surface oxygen content was decreased and the surface roughness and surface hardness were increased. Variation of surface oxygen content was related to energy density and spot density. The lowest oxygen content was obtained at 150 W, 100 Hz and 0.8 m/min. Laser-generated craters changed surface morphology and improved surface roughness. The mechanical properties of the welded joints were slightly improved, which relates to a decrease in porosity. The minimum porosity of the laser-cleaned weld was 0.021%. This work provides new ideas for the nanosecond laser cleaning of aluminum alloy and its welding properties.
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spelling pubmed-96577132022-11-15 Welding Defect and Mechanical Properties of Nanosecond Laser Cleaning 6005A Aluminum Alloy Zhang, Yuelai Yao, Qi Long, Weifeng Wang, Chunming Lin, Ji Liu, Zehui Materials (Basel) Article Nanosecond laser cleaning effectively removes oxide film and dirt from the surface of aluminum body parts for rail transit, as well as improving surface properties. The effect of laser cleaning on the quality of weld was studied in detail for different scanning frequencies and cleaning speeds. The effect of post-weld laser cleaning on weld quality was investigated. After laser cleaning at different parameters, the surface oxygen content was decreased and the surface roughness and surface hardness were increased. Variation of surface oxygen content was related to energy density and spot density. The lowest oxygen content was obtained at 150 W, 100 Hz and 0.8 m/min. Laser-generated craters changed surface morphology and improved surface roughness. The mechanical properties of the welded joints were slightly improved, which relates to a decrease in porosity. The minimum porosity of the laser-cleaned weld was 0.021%. This work provides new ideas for the nanosecond laser cleaning of aluminum alloy and its welding properties. MDPI 2022-11-07 /pmc/articles/PMC9657713/ /pubmed/36363433 http://dx.doi.org/10.3390/ma15217841 Text en © 2022 by the authors. https://creativecommons.org/licenses/by/4.0/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 (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Article
Zhang, Yuelai
Yao, Qi
Long, Weifeng
Wang, Chunming
Lin, Ji
Liu, Zehui
Welding Defect and Mechanical Properties of Nanosecond Laser Cleaning 6005A Aluminum Alloy
title Welding Defect and Mechanical Properties of Nanosecond Laser Cleaning 6005A Aluminum Alloy
title_full Welding Defect and Mechanical Properties of Nanosecond Laser Cleaning 6005A Aluminum Alloy
title_fullStr Welding Defect and Mechanical Properties of Nanosecond Laser Cleaning 6005A Aluminum Alloy
title_full_unstemmed Welding Defect and Mechanical Properties of Nanosecond Laser Cleaning 6005A Aluminum Alloy
title_short Welding Defect and Mechanical Properties of Nanosecond Laser Cleaning 6005A Aluminum Alloy
title_sort welding defect and mechanical properties of nanosecond laser cleaning 6005a aluminum alloy
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9657713/
https://www.ncbi.nlm.nih.gov/pubmed/36363433
http://dx.doi.org/10.3390/ma15217841
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