Abstract
To study the dynamic behavior and microstructural evolution in high strain rate deformation of Ti-5Al-5Mo-5V-1Cr-1Fe (Ti-55511) alloy, a series of forced shear tests of hat shaped specimens have been conducted using a split Hopkinson pressure bar combined with “strain frozen” technique. Localized shear band is induced in these tests. This paper indicates that the flow stress of Ti-55511 alloy is independent on the punching depth, and thermal softening has a minor effect on the onset of adiabatic shear band and dynamic recrystallization formation. The concept of “adhesive fracture” can be identified as the dynamic failure mechanism for Ti-55511 alloy based on the crack propagation path.
| Original language | English |
|---|---|
| Pages (from-to) | 142-145 |
| Number of pages | 4 |
| Journal | Materials Letters |
| Volume | 232 |
| DOIs | |
| Publication status | Published - 1 Dec 2018 |
Keywords
- Adiabatic shear band
- Deformation and fracture
- Microstructure
- Recrystallization
- Ti-5Al-5Mo-5V-1Cr-1Fe alloy