Influence of the addition of tin (SN)‎ on the mechanical properties of the al-4 mass % cu alloy

Abstract EN

Mechanical properties () / materials depend up on the morphology and the dispersion o / the phases, that constitute them.

Several studies have indeed, shown the essential 20 /,? played hy addition elements, in the variation of the observed mechanical properties, as well, many studies have been carried out on the age hardening o / al-cu alloys.

In the latter, cooper play a capital 20 /,? in the alloy's hardening, the quenched supersaturated solid solution al-4 % cu leads 0; an equilibrium precipitate 0 according 0; the fallowing sequence: a * -> G.P.

->

p.

coherent guinier-preston zones with the matrix, 0 "and 9 'are semi-coherent metastable phases with the matrix.

The formation and the growth () / these phases can be influenced by the small addition o / a third element, the present work, reports on the effect o / the small addition o / tin (sn),, 1 «the variation o / the mechanical properties at low temperatures, o / the al-4% cu alloy.

Vickers microhardness tester, was used 0; study this phenomenon, x-ray diffraction technique,, '«01 also employe