| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Titanium Technology
|
| Presentation Title |
How Microtextured Regions Influence the Early Slip Activity in Ti Alloys |
| Author(s) |
Samuel Hemery, Azdine Naït-Ali, Loic Signor, Patrick Villechaise, McLean P. Echlin, Joseph Wendorf, Jean-Charles Stinville, Tresa M. Pollock, Mikael Gueguen |
| On-Site Speaker (Planned) |
Samuel Hemery |
| Abstract Scope |
Processing of α/β Ti alloys produces mm-scaled microstructural regions with a sharp local texture. These microtextured regions, also called macrozones, have detrimental effects on mechanical properties for various loading conditions including fatigue and dwell-fatigue. In situ SEM tensile tests combined with EBSD were employed to experimentally monitor the onset of slip activity at the grain scale and to observe pronounced stress and strain heterogeneities in relation to MTRs. Fast-Fourier transform based crystal plasticity simulations of very large 3D polycrystalline aggregates were also carried out to obtain a mechanistic understanding. Experimentally captured 3D microstructures as well as synthetic microstructures were employed to isolate the influence of the degree of microtexture on the deformation behavior. In particular, polycrystalline aggregates containing MTRs with different sizes and geometries were instantiated in order to obtain predictive insights into the detrimental effect of MTRs. |
| Proceedings Inclusion? |
Planned: |