High temperature creep deformation of Al18B4O33 whisker-reinforced 8009 Alcomposite

Citation
Lm. Peng et al., High temperature creep deformation of Al18B4O33 whisker-reinforced 8009 Alcomposite, MAT SCI E A, 265(1-2), 1999, pp. 63-70
Citations number
67
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
ISSN journal
0921-5093 → ACNP
Volume
265
Issue
1-2
Year of publication
1999
Pages
63 - 70
Database
ISI
SICI code
0921-5093(19990615)265:1-2<63:HTCDOA>2.0.ZU;2-S
Abstract
The compression creep deformation of an Al18B4O33 whisker-reinforced Al-Fe- V-Si (8009 Al alloy) composite has been investigated in the temperatures ra nge from 573 to 723 K. The addition of 15 vol.% Al18B4O33 whiskers to the 8 009 alloy decreases the creep rate by two orders of magnitude compared to t he 8009 alloy. The stress and temperature dependence of the creep rate of t he composite is similar to that of the 8009 alloy. The threshold stress for creep was used to analyze the experimental data for the composite. The cre ep rates of the composite are shown to be controlled by lattice diffusion o f aluminum. The contribution of the whiskers on creep rate of the composite is interpreted by a modified load-transfer model. (C) 1999 Elsevier Scienc e S.A. All rights reserved.