The effect of aging treatment on the microstructure and mechanical properties of AA2124 hybrid composites reinforced with both SiC whiskers and SiC particles

Authors
Ko, BC Yoo, YC
Citation
Bc. Ko et Yc. Yoo, The effect of aging treatment on the microstructure and mechanical properties of AA2124 hybrid composites reinforced with both SiC whiskers and SiC particles, COMP SCI T, 59(5), 1999, pp. 775-779
Citations number
18
Categorie Soggetti
Material Science & Engineering
Journal title
COMPOSITES SCIENCE AND TECHNOLOGY
ISSN journal
02663538 → ACNP
Volume
59
Issue
5
Year of publication
1999
Pages
775 - 779
Database
ISI
SICI code
0266-3538(1999)59:5<775:TEOATO>2.0.ZU;2-M
Abstract
The hybrid composites with different ratios of SiCw and SICp (SiCw:SICp = 1 :1, 1.2, and 1:3) were fabricated by the powder-metallurgy route and were s olution treated followed by aging treatment. Mechanical properties of the h ybrid composites reinforced with both SIC whiskers (SiCw) and SIC particles (SiCp) were investigated. The peak aging time for the hybrid composites wa s determined from the measurement of matrix hardness. Accelerated aging occ urred in the hybrid composites and the peak aging time (similar to 5 h) was similar in all the hybrid composites. The hybrid composite with SICw:SICp = 1.1 showed the highest ultimate tensile strength. The work hardening rate of under-aged hybrid composite with SiCw:SiCp = 1.1 was higher than that o f over-aged one. (C) 1999 Elsevier Science Ltd. All rights reserved.