Microhardness variation and related microstructure in Al–Cu alloys prepared by HF induction melting and RF sputteringN. Boukhris, S. Lallouche, M. Y. Debili and M. DraissiaEur. Phys. J. Appl. Phys., 45 3 (2009) 30501DOI: https://doi.org/10.1051/epjap/2009016