Deformation behaviour of Al–Cu–Li alloy containing T₁ precipitates

ABSTRACT

In the present work, a systematic investigation of crystallographic texture evolution and strain hardening behaviour was undertaken to comprehend the deformation behaviour in the presence of T₁ (Al₂CuLi) precipitates. Characteristic texture components symbolising multiple slip condition such as Copper and S were observed upon rolling which is in contrast with other Al alloys containing shearable precipitates. Strain hardening ability was also observed to be remarkably high in the presence of T₁ precipitates. The texture and strain hardening results are compared with another age hardenable Al alloy (Al–Mg–Si alloy) containing shearable precipitates to clearly bring out the difference in the nature of T₁ precipitates.

KEYWORDS:

• Precipitate
• plastic deformation
• texture
• strain hardening
• Al–Cu–Li alloy

Acknowledgements

The authors would like to thank Texture lab, ACMS, IIT Kanpur.

Disclosure statement

No potential conflict of interest was reported by the authors.

ORCID

Manasij Yadava http://orcid.org/0000-0002-1866-6930