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Development of Al-Cu-Mg-Li (Mn,Zr,Sc) alloys for age-forming

Development of Al-Cu-Mg-Li (Mn,Zr,Sc) alloys for age-forming
Development of Al-Cu-Mg-Li (Mn,Zr,Sc) alloys for age-forming
Age forming of lower wing skin structures for civil airframes requires an alloy with good age formability and mechanical properties (yield strength, ultimate tensile strength, fatigue resistance, toughness). Using property modelling and general metallurgical understanding, a series of Al-Cu-Mg-Li (Mn, Zr, Sc) alloys have been designed. After artificial ageing representative of age-forming several of the newly designed alloys have yield strength, fatigue crack growth resistance and toughness that are at least comparable to the incumbent damage tolerant material for such applications, viz. 2024-T351. Coarse grain structure and high Li content are seen to be associated with good fatigue resistance but reduced formability, and an optimum balance needs to be sought.
369-375
Kamp, N.
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Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Sinclair, I.
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Gao, N.
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Gregson, P.J.
ddc3b65d-18fb-4c11-9fa1-feb7e9cbe9fe
Pitcher, P.D.
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Gardiner, S.
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Kamp, N.
ba7fdd8e-3e59-4c94-9cf5-944eda3e1050
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Sinclair, I.
6005f6c1-f478-434e-a52d-d310c18ade0d
Gao, N.
9c1370f7-f4a9-4109-8a3a-4089b3baec21
Gregson, P.J.
ddc3b65d-18fb-4c11-9fa1-feb7e9cbe9fe
Pitcher, P.D.
211dee74-f903-4960-b9ed-6cee8d0a33f2
Gardiner, S.
5cae7fc4-a00e-4a7c-9532-9676c2f7d498

Kamp, N., Starink, M.J., Sinclair, I., Gao, N., Gregson, P.J., Pitcher, P.D. and Gardiner, S. (2004) Development of Al-Cu-Mg-Li (Mn,Zr,Sc) alloys for age-forming. Materials Forum, 28, 369-375.

Record type: Article

Abstract

Age forming of lower wing skin structures for civil airframes requires an alloy with good age formability and mechanical properties (yield strength, ultimate tensile strength, fatigue resistance, toughness). Using property modelling and general metallurgical understanding, a series of Al-Cu-Mg-Li (Mn, Zr, Sc) alloys have been designed. After artificial ageing representative of age-forming several of the newly designed alloys have yield strength, fatigue crack growth resistance and toughness that are at least comparable to the incumbent damage tolerant material for such applications, viz. 2024-T351. Coarse grain structure and high Li content are seen to be associated with good fatigue resistance but reduced formability, and an optimum balance needs to be sought.

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Published date: 2004

Identifiers

Local EPrints ID: 22735
URI: http://eprints.soton.ac.uk/id/eprint/22735
PURE UUID: 85f65151-4b4a-4cd6-8925-78f1392cb8b9
ORCID for N. Gao: ORCID iD orcid.org/0000-0002-7430-0319

Catalogue record

Date deposited: 03 Apr 2006
Last modified: 16 Mar 2024 03:21

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Contributors

Author: N. Kamp
Author: M.J. Starink
Author: I. Sinclair
Author: N. Gao ORCID iD
Author: P.J. Gregson
Author: P.D. Pitcher
Author: S. Gardiner

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