Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1500258 | Scripta Materialia | 2011 | 4 Pages |
Abstract
An extremely fast hardening response with no reduction in peak hardness was obtained in Al-Cu with minor additions of Si and Ge by 8% plastic deformation before artificial aging. The mechanism for the accelerated hardening was determined by detailed characterization with transmission electron microscopy. Plastic deformation was found to enhance the nucleation rate of Si-Ge precipitates, resulting in a higher volume density. Such precipitates catalyzed the formation of θⲠprecipitates that are responsible for hardening.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
M. Victoria Castro Riglos, M. Taquire de la Cruz, Alfredo Tolley,