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Title: Mobility of point-like defects in Cu-Al martensites
Authors: Cesari, E. ×
Kustov, S.
Golyandin, S.
Sapozhnikov, K.
Van Humbeeck, Jan #
Issue Date: Dec-2006
Publisher: Elsevier science sa
Series Title: Materials science and engineering a-structural materials properties microstructure and processing vol:438 pages:369-373
Abstract: We try to define a factor, apart from temperature, which allows for the mobility of quenched-in defects in a Cu-Al system of martensitic alloys. An acoustic technique, operating for temperatures between ambient and 10 K, was applied to detect the existence of mobile quenched-in defects in alloys with Al content from 20.8 to 26.9 at.%. Mobility of quenched-in defects was not detected for alloys with Al content close to and below stoichiometric one Cu3Al, corresponding to perfect DO3 ordering. For the alloy Cu-26 at.% Al, the mobility of quenched-in defects was detected starting from temperature of around 70 K. It is suggested that the off-stoichiometry of the alloys is accommodated through anti-site defect formation on the Al deficiency side and through the vacancy formation on the Al-rich side of the phase diagram. (c) 2006 Elsevier B.V. All rights reserved.
URI: 
ISSN: 0921-5093
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Physical Metallurgy and Materials Engineering Section (-)
× corresponding author
# (joint) last author

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