Positron Annihilation Studies of Early Stages of Precipitation in High-Strength 2024 Al-Cu-Mg Alloy
- Prof. T. W. Clyne and
- F. Simancik
Published Online: 21 DEC 2005
Copyright © 2000 Wiley-VCH Verlag GmbH, Weinheim
Metal Matrix Composites and Metallic Foams, Volume 5
How to Cite
Dlubek, G., Depetasse, S., Sourkov, A. and Meyendorf, N. (2005) Positron Annihilation Studies of Early Stages of Precipitation in High-Strength 2024 Al-Cu-Mg Alloy, in Metal Matrix Composites and Metallic Foams, Volume 5 (eds T. W. Clyne and F. Simancik), Wiley-VCH Verlag GmbH & Co. KGaA, Weinheim, FRG. doi: 10.1002/3527606203.ch4
Department of Materials Science and Metallurgy, Cambridge University, Pembroke Street, Cambridge CB2 3QZ, U.K.
- Published Online: 21 DEC 2005
- Published Print: 20 APR 2000
Print ISBN: 9783527301263
Online ISBN: 9783527606207
- high-strength 2024 Al-Cu-Mg alloy;
- positron annihilation studies
Positron annihilation lifetime and Doppler-broadened annihilation line spectroscopy were used to study precipitation phenomena in an Al-Cu and a 2024 Al-Cu-Mg alloy. While the positron lifetime is sensitive to vacancy-type defects, the curve shape parameter S of the annihilation line mirrors more the chemical surroundings of the defects and its change during ageing of quenched alloys. This allows conclusions on microstructure changes occurring on a microscopic and atomic scale.