Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1499681 | Scripta Materialia | 2011 | 4 Pages |
Abstract
The influence of nanoscale reinforcement on the mechanical behavior of ultrafine-grained composites was studied. Al 5083 (Al–4.5 Mg–0.57Mn–0.25Fe) composites, with grain size of 115 nm and B4C reinforcement size of 38 nm, were fabricated via cryomilling and consolidation. The result reveals that the presence of nanoparticles enhances strength by interacting with dislocations, while simultaneously retarding grain growth. Furthermore, the nanoparticles-reinforced composite exhibits enhanced plasticity relative to the same material reinforced with micrometric particles. The underlying mechanisms are discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Zhihui Zhang, Troy Topping, Ying Li, Rustin Vogt, Yizhang Zhou, Chris Haines, Joseph Paras, Deepak Kapoor, Julie M. Schoenung, Enrique J. Lavernia,