Preparation of Cu-Al-Nb shape memory alloys by high energy ball milling and powder metallurgy M.C.A. da Silva, C.J. Araujol, R.E. Coelho, T.A.A. Melo, R.M. Gomes and S.J.G. de Lima J. Phys. IV France, 112 (2003) 579-582 DOI: 10.1051/jp4:2003952