Microstructural refinement and intermetallic formation in an Al–5Cu alloy consolidated by high-pressure torsion

Microstructural refinement and intermetallic formation in an Al-5Cu alloy consolidated by high-pressure torsion

Authors: Koriche, S., Azzeddine, H., Djemli, A., Bazarnik, P., Reséndiz, L.R., Naeem, M., Huang, Y., Kawasaki, M., Langdon, T.G.

Journal: Materials Letters

Publication Date: 01/06/2026

Volume: 412

eISSN: 1873-4979

ISSN: 0167-577X

DOI: 10.1016/j.matlet.2026.140393

Abstract:

Bulk Al-5Cu (wt%) was successfully fabricated from commercial Al and Cu powders at room temperature using high-pressure torsion up to 50 turns. The microstructure near the edge of the disc was heterogeneous with an Al-rich solid solution matrix having an average grain size of ∼110 ± 20 nm and regions with lamellae bands in a supersaturated solid solution containing nanosized grains of ∼25 ± 5 nm. A partial dissolution of Cu into the Al matrix occurred concurrently with the formation of Al2Cu and Al4Cu9 intermetallic phases. A high microhardness of 200–230 Hv was reached at the edge of the disc. This study demonstrates the ability to engineer a novel Al-Cu system by processing via severe plastic deformation.

https://eprints.bournemouth.ac.uk/41828/

Source: Scopus

Authors: Koriche, S., Azzeddine, H., Djemli, A., Bazarnik, P., Romero Resendiz, L., Naeem, M., Huang, Y., Kawasaki, M., Langdon, T.G.

Journal: Materials Letters

Publication Date: 01/05/2026

Volume: 412

Pages: 140393(1)-140393(4)

Publisher: Elsevier

eISSN: 1873-4979

ISSN: 0167-577X

DOI: 10.1016/j.matlet.2026.140393

https://eprints.bournemouth.ac.uk/41828/

Source: Manual

Preferred by: Yi Huang