| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8021263 | Materials Letters | 2013 | 4 Pages |
Abstract
This work used in-situ scanning electron microscopy method to investigate the small fatigue crack behavior of the aluminum alloy 2024 laminated structure produced by ultrasonic consolidation process. The influence of local microstructure on the crack propagation of the laminates after different heat treatments (T4 and T62) has been compared and discussed. It was found that both the precipitations and the interfaces of the layers could retard crack growth and alter the growth direction, and the effect of interfaces was much stronger. Due to the higher ratio of the toughness to bond strength, the barrier effect of the interfaces on impeding the fatigue crack growth in specimens after the T4 heat treatment was more evident.
Related Topics
Physical Sciences and Engineering
Materials Science
Nanotechnology
Authors
Xiao-Hua He, Hui-Ji Shi, Yu-Duo Zhang, Wen-Xiang Fu, Zhi-Gang Yang, Carey E. Wilkinson,