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- Title
Influences of microstructure and orientation on fracture toughness of intermetallic phase Al<sub>2</sub>Cu-based alloy under directional solidification.
- Authors
Gao, K.; Li, S.; Song, S.; Zhang, R.; Guo, X.; Fu, H.
- Abstract
The influences of microstructures and orientations on fracture toughness of intermetallic phase Al2Cu-based alloys during different directionally solidified rates were investigated. With solidified rates increasing, the patterns of Al2Cu phase dendrite turned from faceted V-shaped morphology to elongated plate-shaped morphology and discontinuous complex morphology in longitudinal section. Moreover, the deviation angle between the growth direction of Al2Cu dendrite and the heat flow direction was increasing. Because of fine grain toughening and crack propagation path deflected by orientation, the fracture toughness of Al2Cu-based alloy was improved. The experimental results showed that improving the brittleness could be well achieved under higher directionally solidified rate.
- Subjects
MICROSTRUCTURE; SOLIDIFICATION; MELTING points; SOLID solutions; CRYSTALLIZATION
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 2016, Vol 39, Issue 4, p511
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1111/ffe.12388