INFLUENCE OF FIBER REINFORCEMENT ON THE AGING BEHAVIOR OF AN ALSI12CUMGNI ALLOY

Authors
BAR J GUDLADT HJ ILLY J LENDVAI J
Citation
J. Bar et al., INFLUENCE OF FIBER REINFORCEMENT ON THE AGING BEHAVIOR OF AN ALSI12CUMGNI ALLOY, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 248(1-2), 1998, pp. 181-186
Citations number
21
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
248
Issue
1-2
Year of publication
1998
Pages
181 - 186
Database
ISI
SICI code
0921-5093(1998)248:1-2<181:IOFROT>2.0.ZU;2-6
Abstract
The aging behaviour of an AlSil2CuMgNi alloy reinforced with 20 vol.% Saffil and Fiberfrax, respectively, has been investigated by hardness measurements and differential scanning calorimetry. Taking the amount of fibres into account, the Saffil-reinforced alloy shows the same hea t effect and hardness increase as the unreinforced alloy. In this comp osite the aging is accelerated, i.e. the maximum hardness is reached i n about half the lime of the unreinforced alloy. The Fiberfrax-reinfor ced alloy shows no aging effects at all. This is caused by the formati on of an interface layer around the fibres in which Mg is enriched and therefore the formation of Mg2Si precipitates in the matrix is suppre ssed. (C) 1998 Elsevier Science S.A. All rights reserved.