Abstract
The addition of zirconium (Zr) together with scandium (Sc) is known to increase the strength of Al alloys. This work explores the impact of Sc and Zr on the extrudability of a model extruded Al-4 wt%Cu alloy. A traditional material’s property which can be directly related to the energy required to form a certain alloy is an alloy’s flow stress. The flow stress behaviour is evaluated from the stress displacement curves recorded during extrusion . The addition of Sc and Zr is found to result in an increase of the flow stress of 14% when the yield strength in the T8 temper increases by 100%. This increase in flow stress is compared to other heat treatable Al alloys and it is found that Sc and Zr result only a minor increase in the flow stress.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
References
J. C. Williams and E. A. Starke, ‘Progress in structural materials for aerospace systems 11 The Golden Jubilee Issue—Selected topics in Materials Science and Engineering: Past, Present and Future, edited by S. Suresh.’, Acta Mater., vol. 51, no. 19, pp. 5775–5799, Nov. 2003.
C. Soutis, ‘Carbon fiber reinforced plastics in aircraft construction’, Mater. Sci. Eng. A, vol. 412, no. 1–2, pp. 171–176, Dec. 2005.
T. Dursun and C. Soutis, ‘Recent developments in advanced aircraft aluminium alloys’, Mater. Des. 1980–2015, vol. 56, pp. 862–871, Apr. 2014.
T. Dorin, M. Ramajayam, J. Lamb, and T. J. Langan, ‘Chapter 17: Aluminium Scandium Alloys’, in Fundamentals of Aluminium Metallurgy: Recent Advances, Elsevier, 2018.
T. Dorin, M. Ramajayam, J. Lamb, and T. J. Langan, ‘Effect of Sc and Zr additions on the microstructure/strength of Al-Cu binary alloys.’, Mater. Sci. Eng. A, In Press 2017.
T. Sheppard, Extrusion of aluminium alloys. Springer Science & Business Media, 2013.
L. S. Toropova, Advanced aluminum alloys containing scandium: structure and properties. Taylor & Francis, 1998.
J. Røyset and N. Ryum, ‘Scandium in aluminium alloys’, Int. Mater. Rev., vol. 50, no. 1, pp. 19–44, Feb. 2005.
Y. A. Filatov, V. I. Yelagin, and V. V. Zakharov, ‘New Al–Mg–Sc alloys’, Mater. Sci. Eng. A, vol. 280, no. 1, pp. 97–101, 2000.
E. L. Bradley, R. A. Emigh, and J. W. Morris, ‘Superplastic properties of an Al · 2.4 Mg · 1.8Li · 0.5Sc alloy’, Scr. Metall. Mater., vol. 25, no. 3, pp. 717–721, Mar. 1991.
T. Dorin, M. Ramajayam, and T. J. Langan, ‘Impact of Scandium and Zirconium on extrudability, microstructure and hardness of a binary Al-Cu alloy’, Mater. Today Proc., In Press 2017.
T. Sheppard and D. S. Wright, ‘Determination of flow stress: Part 1 constitutive equation for aluminium alloys at elevated temperatures’, Met. Technol., vol. 6, no. 1, pp. 215–223, Jan. 1979.
C. M. Sellars and W. J. M. Tegart, ‘Hot Workability’, Int. Metall. Rev., vol. 17, no. 1, pp. 1–24, Jan. 1972.
‘Online Materials Information Resource - MatWeb’. [Online]. Available: http://www.matweb.com/. [Accessed: 03-Oct-2017].
Acknowledgements
The authors would like to acknowledge Clean TeQ for providing in-kind Al–Sc master alloys. Dave Gray is warmly thanked for casting the alloys used in this project.
Author information
Authors and Affiliations
Corresponding author
Editor information
Editors and Affiliations
Rights and permissions
Copyright information
© 2018 The Minerals, Metals & Materials Society
About this paper
Cite this paper
Dorin, T., Ramajayam, M., Mester, K., Rouxel, B., Lamb, J., Langan, T.J. (2018). The Effect of Scandium and Zirconium on the Microstructure, Mechanical Properties and Formability of a Model Al–Cu Alloy. In: Martin, O. (eds) Light Metals 2018. TMS 2018. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-319-72284-9_208
Download citation
DOI: https://doi.org/10.1007/978-3-319-72284-9_208
Published:
Publisher Name: Springer, Cham
Print ISBN: 978-3-319-72283-2
Online ISBN: 978-3-319-72284-9
eBook Packages: Chemistry and Materials ScienceChemistry and Material Science (R0)