Abstract
The fatigue crack propagation behavior of different microstructures in TC4-DT titanium alloy was studied, and the crack propagation path in different microstructures was observed. The crack tip plasticity zone of different microstructures was analyzed, and was compared with the theoretical calculation results. The results reveal that fatigue crack propagation path is zigzag and the crack tip plasticity region is bigger in lamellar microstructure compared with the bi-modal microstructure. The crack tip plasticity region of theoretical calculation is much smaller than the actually measured range.
| Original language | English |
|---|---|
| Pages (from-to) | 1479-1482 |
| Number of pages | 4 |
| Journal | Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering |
| Volume | 43 |
| Issue number | 6 |
| State | Published - Jun 2014 |
Keywords
- Crack propagation
- Crack tip plastic region
- Damage tolerance titanium alloy
- Microstructure