Effect of dissolution of Θ-phase on characteristic parameters of work-hardening in AL-2·5wt. % Cu alloy

Autor: Kenawy, M. A., Nagy, M. R., Sakr, M. S., Mostafa, M. T.
Zdroj: Czechoslovak Journal of Physics; February 1989, Vol. 39 Issue: 2 p224-229, 6p
Abstrakt: Stress-strain curves of slowly cooled and quenched Al-2·5 wt. % Cu alloy were studied in the temperature range 693 K to 773 K. The linear work-hardening coefficient, the fracture time, the yield stress and the fracture stress of annealed and quenched samples decreased with increasing deformation temperature and exhibited a minimum at 733 K. The X-ray analysis of the slowly cooled and quenched samples showed that the lattice parametera of Al-matrix and the ratioc/a of the tetragonal T-phase reached a minimum and a maximum value, respectively, at the dissolution temperature.
Databáze: Supplemental Index