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Impact of hot rolling on the r-values of 6000 series aluminium alloys
SARBAN Ali A.
download PDFAbstract. Crystallographic texture of sheet metal influences formability significantly. Lankford coefficient or the so-called r-value, a texture related property, is a property often specified as a customer requirement and therefore a property that requires close monitoring and control during the production process. Through systematic experiments, it is demonstrated how hot rolling, especially hot tandem rolling influences r-values of wrought aluminium alloys. A tandem rolling model has been developed that enables control of final r-value for a given 6016 alloy with a given downstream process. The model clearly shows how entry temperature and exit speed of tandem mill can be used to control the final product’s r-value. The model that provides a metallurgical explanation for the effect, can be used to steer the tandem mill in such a manner that a minimum r-value is guaranteed and at the same time, variations of r-value along the length of the strip are minimized or suppressed. The model also provides a better alternative to the existing and conventional tandem mill steering methodology based on constant exit temperature. The proposed methodology is based on keeping a (nearly) constant Zener-Hollomon parameter along the length of the strip during tandem rolling.
Keywords
Aluminium, 6000 Series, Hot Rolling, R-Values, Rolling Speed, Rolling Temperature
Published online 4/24/2024, 7 pages
Copyright © 2024 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: SARBAN Ali A., Impact of hot rolling on the r-values of 6000 series aluminium alloys, Materials Research Proceedings, Vol. 41, pp 914-920, 2024
DOI: https://doi.org/10.21741/9781644903131-100
The article was published as article 100 of the book Material Forming
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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