In-situ scanning electron microscopy studies of small fatigue crack growth in ultrasonic consolidation bonded aluminum 2024 laminated structure

2013 ◽  
Vol 112 ◽  
pp. 47-50 ◽  
Author(s):  
Xiao-Hua He ◽  
Hui-Ji Shi ◽  
Yu-Duo Zhang ◽  
Wen-Xiang Fu ◽  
Zhi-Gang Yang ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
Scanning Electron Microscopy ◽  
Fatigue Crack ◽  
Fatigue Crack Growth ◽  
Crack Growth ◽  
Laminated Structure ◽  
Ultrasonic Consolidation ◽  
Small Fatigue Crack ◽  
Scanning Electron

On The Fatigue Short Crack Behaviors of Directionally Solidified Superalloy DZ4 by In Situ SEM Observations

2010 ◽  
Vol 118-120 ◽  
pp. 289-293
Author(s):  
Xian Feng Ma ◽  
Hui Ji Shi
Keyword(s):  
Electron Microscopy ◽  
Crack Growth ◽  
Short Crack ◽  
Directionally Solidified ◽  
Crack Initiation And Propagation ◽  
Small Fatigue Crack ◽  
Initiation And Propagation ◽  
Different Temperatures ◽  
Scanning Electron

Small fatigue crack behaviors in a nickel-based directionally solidified superalloy DZ4 were studied by in situ scanning electron microscopy. The crack initiation and propagation manners were identified under different temperatures, i.e. 25oC, 350oC, 700oC. Crack growth showed to be associated with the configuration and relative direction of carbide. The anomalous short crack growth was pronounced at 25oC, 350oC and not evident at 700oC, which was analyzed by in situ examining the effect of microstructure.

Sign in / Sign up

Export Citation Format

Share Document