| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Deformation Induced Microstructural Modification
|
| Presentation Title |
Probing Microstructural Evolution in Deformation with Electrons and X-rays |
| Author(s) |
Anthony D. Rollett, Robert Suter, Rachel Lim, Matthew Wilkin, Yueheng Zhang, Patcharapit Promoppatum, Carter Cocke, Ashley Spear, Ricardo Lebensohn, Jerard Gordon |
| On-Site Speaker (Planned) |
Anthony D. Rollett |
| Abstract Scope |
Synchrotron x-rays are uniquely useful as a probe of microstructural evolution during deformation. A brief update will be given of progress on developing Bragg Coherent diffraction imaging (BCDI) for strain mapping in polycrystalline samples. Also, microstructural evolution in cyclic deformation in Ti-7Al shows general changes in strain (& stress) states with stronger outlier changes in a minority of grains. Preliminary results from an experiment to determine CRSS evolution in a high entropy alloy are reviewed. A recent AFRL Modeling Challenge provided HEDM data for a tensile test of an additively manufactured (AM) superalloy sample: simulating the test with the FFT method showed good agreement for strain tensors from grains selected for their high confidence values. Simulation of laser melting in AM shows that, in addition to residual stress, a small amount of plastic strain can be developed. This is being investigated via orientation mapping in printed metals. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Modeling and Simulation, Additive Manufacturing |