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Study on the influence of nickel additions on AA7020 formability under superplastic forming like conditions
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Taylor, S., Janik, V., Grimes, Roger and Dashwood, R. J. (2023) Study on the influence of nickel additions on AA7020 formability under superplastic forming like conditions. Metals and Materials International, 29 . pp. 2597-2604. doi:10.1007/s12540-023-01396-9 ISSN 1598-9623.
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Official URL: http://dx.doi.org/10.1007/s12540-023-01396-9
Abstract
This study set out to look at the influence of nickel additions on a commercially available AA7020 to understand the impact of the resultant intermetallics on recrystallization, formability and material strength. Elevated temperature tensile testing across a range of strain rates (5 × 10−4 s−1 × 10−1 s−1) and three temperatures (450− 500 °C) to compare material ductility followed by gas bulge testing at 475 °C and two gas pressures to investigate formability in a test closer to industrial forming conditions. Material strength was established using standard tensile testing, and EBSD used to understand the microstructural evolution of the materials. It was seen that the nickel additions increased ductility of the material across all test conditions, coupled with increasing the material strength. This was achieved due to the formation of nickel rich intermetallics which refine the microstructure during pre-heating through particle stimulated nucleation and subsequently improve strength through precipitation hardening in aging treatments.
Item Type: | Journal Article | ||||||||
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Subjects: | Q Science > QC Physics T Technology > TN Mining engineering. Metallurgy T Technology > TS Manufactures |
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Divisions: | Faculty of Science, Engineering and Medicine > Engineering > WMG (Formerly the Warwick Manufacturing Group) | ||||||||
Library of Congress Subject Headings (LCSH): | Aluminum , Aluminum alloys, Nickel-aluminum alloys, Superplastic forming (Metal-work), Electrons -- Backscattering , Electron microscopy -- Industrial applications | ||||||||
Journal or Publication Title: | Metals and Materials International | ||||||||
Publisher: | Springer | ||||||||
ISSN: | 1598-9623 | ||||||||
Official Date: | September 2023 | ||||||||
Dates: |
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Volume: | 29 | ||||||||
Page Range: | pp. 2597-2604 | ||||||||
DOI: | 10.1007/s12540-023-01396-9 | ||||||||
Status: | Peer Reviewed | ||||||||
Publication Status: | Published | ||||||||
Access rights to Published version: | Open Access (Creative Commons) | ||||||||
Date of first compliant deposit: | 9 March 2023 | ||||||||
Date of first compliant Open Access: | 10 March 2023 | ||||||||
RIOXX Funder/Project Grant: |
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