The ternary Cu-Al-Sn phase diagram is the base for several important types of
alloys, with relevant industrial interest and applications. The knowledge of
the melting/solidification alloys characteristics are determinant for their
preparation and properties control. However, there is a lack of experimental
information on the ternary phase diagram, at high temperature. In this work,
several alloys, with high copper content and additions of Al, up to 10%, and
Sn, up to 14% (in wt%), were studied by thermal analysis and by isothermal
phase equilibria determination. The alloys liquidus and solidus lines and the
binary ? + ? phase field, at 800?C, are presented for the studied range of
compositions.