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Design and Optimization of the Local Laser Treatment to Improve the Formability of Age Hardenable Aluminium Alloys

The research of innovative methodologies to improve the Aluminium alloys formability at room temperature still remains an open question: the local modification of the material properties via short-term heat treatments followed by the stamping at room temperature is reported to be an effective altern...

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Autores principales: Piccininni, Antonio, Palumbo, Gianfranco
Formato: Online Artículo Texto
Lenguaje:English
Publicado: MDPI 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7177744/
https://www.ncbi.nlm.nih.gov/pubmed/32235342
http://dx.doi.org/10.3390/ma13071576
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author Piccininni, Antonio
Palumbo, Gianfranco
author_facet Piccininni, Antonio
Palumbo, Gianfranco
author_sort Piccininni, Antonio
collection PubMed
description The research of innovative methodologies to improve the Aluminium alloys formability at room temperature still remains an open question: the local modification of the material properties via short-term heat treatments followed by the stamping at room temperature is reported to be an effective alternative to the forming in warm conditions. In the present work, such a methodology has been applied to the deep drawing of an age-hardenable Aluminium alloy (AA6082-T6) using an experimental/numerical approach. A preliminary extensive material characterization was aimed at investigating the material behaviour: (i) in the as-received condition (peak hardening), (ii) in the supersaturated condition (obtained by physical simulation) and (iii) after being locally solutioned via laser heating. A Finite Element based approach (Abaqus CAE, v. 6.17) was then used to design the laser treatment of the blanks to be subsequently deep drawn at room temperature: a 2D axisymmetric model of the deep drawing process was coupled with the optimization platform modeFRONTIER in order to define the radial extent of the laser heat treated area able to maximize the Limit Drawing Ratio. The experimental tests were finally conducted for validation purposes and revealed the effectiveness of the adopted approach which allowed to improve the drawability of more than 20% with respect to the as received condition (T6).
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spelling pubmed-71777442020-04-28 Design and Optimization of the Local Laser Treatment to Improve the Formability of Age Hardenable Aluminium Alloys Piccininni, Antonio Palumbo, Gianfranco Materials (Basel) Article The research of innovative methodologies to improve the Aluminium alloys formability at room temperature still remains an open question: the local modification of the material properties via short-term heat treatments followed by the stamping at room temperature is reported to be an effective alternative to the forming in warm conditions. In the present work, such a methodology has been applied to the deep drawing of an age-hardenable Aluminium alloy (AA6082-T6) using an experimental/numerical approach. A preliminary extensive material characterization was aimed at investigating the material behaviour: (i) in the as-received condition (peak hardening), (ii) in the supersaturated condition (obtained by physical simulation) and (iii) after being locally solutioned via laser heating. A Finite Element based approach (Abaqus CAE, v. 6.17) was then used to design the laser treatment of the blanks to be subsequently deep drawn at room temperature: a 2D axisymmetric model of the deep drawing process was coupled with the optimization platform modeFRONTIER in order to define the radial extent of the laser heat treated area able to maximize the Limit Drawing Ratio. The experimental tests were finally conducted for validation purposes and revealed the effectiveness of the adopted approach which allowed to improve the drawability of more than 20% with respect to the as received condition (T6). MDPI 2020-03-29 /pmc/articles/PMC7177744/ /pubmed/32235342 http://dx.doi.org/10.3390/ma13071576 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
Piccininni, Antonio
Palumbo, Gianfranco
Design and Optimization of the Local Laser Treatment to Improve the Formability of Age Hardenable Aluminium Alloys
title Design and Optimization of the Local Laser Treatment to Improve the Formability of Age Hardenable Aluminium Alloys
title_full Design and Optimization of the Local Laser Treatment to Improve the Formability of Age Hardenable Aluminium Alloys
title_fullStr Design and Optimization of the Local Laser Treatment to Improve the Formability of Age Hardenable Aluminium Alloys
title_full_unstemmed Design and Optimization of the Local Laser Treatment to Improve the Formability of Age Hardenable Aluminium Alloys
title_short Design and Optimization of the Local Laser Treatment to Improve the Formability of Age Hardenable Aluminium Alloys
title_sort design and optimization of the local laser treatment to improve the formability of age hardenable aluminium alloys
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7177744/
https://www.ncbi.nlm.nih.gov/pubmed/32235342
http://dx.doi.org/10.3390/ma13071576
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