Effect of γ-Irradiation on the Mechanical Properties of Al-Cu Alloy

M. Abo-Elsoud; H. Ismail

doi:10.4028/www.scientific.net/DDF.251-252.105

Paper Titles

Slow Positron Studies of Defects in Si-Doped GaAs
p.51

Six-Jump-Cycle Mechanism for Collective Correlations in Nonstoichiometric Intermetallic Compounds
p.59

Vacancy-Wind Factors and Collective Correlation Factors in Nonstoichiometric B2 Intermetallic Compounds
p.69

Defect Densities Using the Positron Annihilation Doppler Broadening Technique in Wrought Alloys 3003 and 3005
p.79

Phenomenological Model for Creep Behaviour in Cu-8.5at%Al Alloy
p.89

Surface Microstructural Evolution up to Creep Rupture under the Power-Law Regime in Cu-8.5at%Al Alloy at Intermediate Temperatures
p.97

Effect of γ-Irradiation on the Mechanical Properties of Al-Cu Alloy
p.105

On the Physics of the Anomalous Characteristics of Fickian Diffusion of Fe and Other Transition-Element Impurities in Crystalline Al at Elevated Temperatures
p.111

On the Physics of Enhanced Fickian Diffusion and Structural-Phase Changes in Intensively Deforming Metallic Materials
p.123

HomeDefect and Diffusion ForumDefect and Diffusion Forum Vols. 251-252Effect of γ-Irradiation on the Mechanical...

Effect of γ-Irradiation on the Mechanical Properties of Al-Cu Alloy

Abstract:

SEM observations and Vickers-hardness tests were performed to identify the irradiation effects. γ- irradiation effect during the aging hardening process can be explained depending on the composition of the alloy and is used to derive quantitative information on the kinetics of the transformation precipitates. Increasing the Cu content of an Al-Cu alloy can improve the aging hardness. The present results of hardness behavior with SEM observations of surveillance specimens at different doses suggest that the radiation-induced defects are probably complex valance-solute clusters. These clusters act as nuclei for the precipitation of θ-Al2Cu type. This can be effectively utilized to study the systematic of nucleation of precipitates at vacancy-type defects. γ-irradiation probably play the key role in defects responsible for material strengthening and embrittlement.