FABRICATION OF AL2O3 FIBER PREFORM WITH GAMMA-AL2O3 POWDER BINDER FOR6061-ALLOY MATRIX COMPOSITES

Authors
SUGANUMA K NAGATOMO K
Citation
K. Suganuma et K. Nagatomo, FABRICATION OF AL2O3 FIBER PREFORM WITH GAMMA-AL2O3 POWDER BINDER FOR6061-ALLOY MATRIX COMPOSITES, Materials science & engineering. A, Structural materials: properties, microstructure and processing, 188(1-2), 1994, pp. 353-361
Citations number
8
Categorie Soggetti
Material Science
Journal title
Materials science & engineering. A, Structural materials: properties, microstructure and processing → ACNP
ISSN journal
09215093
Volume
188
Issue
1-2
Year of publication
1994
Pages
353 - 361
Database
ISI
SICI code
0921-5093(1994)188:1-2<353:FOAFPW>2.0.ZU;2-1
Abstract
A new method for the preparation of an Al2O3, fiber preform without Si O2 binder has been developed for the squeeze cast fabrication of Al al lay matrix composites. Al2O3 short fibers were sintered into a preform with the aid of fine gamma-Al2O3 powders as a binder. By sintering at 1200 degrees C with gamma-Al2O3, powders, the preform became strong e nough to sustain the squeeze casting pressure. The 6061 alloy matrix c omposites obtained from the preforms exhibited excellent strength. Mic rostructural observation revealed that segregation of Mg was not sever e in the presence of gamma-Al2O3 binder.