Formation Energy in Al-Mg Alloy by Positron Annihilation Lifetime Technique (PALT)

Authors

MAMDUH ABEDL-RAHMAN
EMAD A. BADAWI
ESSMAT MAHMOUD HASSAN
GAMAL YAHYA

Abstract

The propose of the present work is to study the interaction of positrons with quenched-in defects and clustered atoms to estimate formation enthalpy in series 50xx of commercial Al-Mg alloys, namely, 5049, 5051,5052 and 5083 at various concentrations: 1.9, 2.09, 2.46 and 4.44 wt % of Mg, respectively. Typically additional impurities were mainly Si, Fe, Cu, Cr and Ti. The monvacancy formation energy of Al-Mg alloys was measured from a trapping model analysis of the T-dependence of the positron lifetime.

DOI

-

Keywords

Lifetime, formation enthalpy, point defects in Al-Mg alloys.

First Page

381

Last Page

390

Recommended Citation

ABEDL-RAHMAN, M, BADAWI, E. A, HASSAN, E. M, & YAHYA, G (2002). Formation Energy in Al-Mg Alloy by Positron Annihilation Lifetime Technique (PALT). Turkish Journal of Physics 26 (5): 381-390. https://doi.org/-