Abstract
The effect of a 20vol % alumina microsphere particulate on the age-hardening characteristics of a 6061 Al matrix composite was investigated - based on microhardness, electrical resistivity and X-ray mapping - and the composite is compared to the unreinforced 6061 Al alloy. It is shown that this ceramic reinforcement can affect the age-hardening behaviour of the matrix alloy by significantly accelerating the kinetics of precipitation. This acceleration is related to a decrease in nucleation time and to an increase in the precipitate-growth rate. The relative amounts of age-hardened precipitates are also observed to be affected by reinforcement addition.
Original language | English |
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Pages (from-to) | 3665-3669 |
Number of pages | 5 |
Journal | Journal of Materials Science |
Volume | 28 |
Issue number | 13 |
DOIs | |
Publication status | Published - Jul 1993 |
Externally published | Yes |
ASJC Scopus subject areas
- Ceramics and Composites
- Materials Science (miscellaneous)
- General Materials Science
- Mechanics of Materials
- Mechanical Engineering
- Polymers and Plastics