Abstract
Surface plastic deformation was applied onto a high Nb containing TiAl alloy by means of high energy shot peening (HESP), and then the influence of surface plastic deformation on diffusion bonding of the high Nb containing TiAl alloy was investigated. The results show that a deformed region with a depth of about 150 μm was produced by HESP. No recrystallization was observed in the deformed region during the bonding process. However, the bonding interface disappeared and large number of recrystallized grains was found near the bonding interface after post bonding heat treatment (PBHT) process. The results of shear test at room temperature reveal that HESP was beneficial to lower the bonding temperature and to ensure a shear strength 420 MPa for the bonding joints.
| Original language | English |
|---|---|
| Pages (from-to) | 353-358 |
| Number of pages | 6 |
| Journal | Cailiao Yanjiu Xuebao/Chinese Journal of Materials Research |
| Volume | 29 |
| Issue number | 5 |
| State | Published - 25 May 2015 |
Keywords
- Diffusion bonding
- High Nb containing TiAl alloy
- Metallic materials
- Shear strength
- Surface plastic deformation