About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Physical Thermo-Mechanical Simulation: Laboratory Advances and In-Situ Diffraction Methods
|
| Presentation Title |
Pushing the limits of physical simulation through high fidelity materials testing |
| Author(s) |
Lesley D. Frame |
| On-Site Speaker (Planned) |
Lesley D. Frame |
| Abstract Scope |
AISI 9310 steel is typically vacuum carburized and hardened prior to final machining. The flow stress of the steel is significantly impacted by heat treat processes, which affect machining quality, residual stress distribution, and part distortion. Major challenges to determining flow stresses in carburized steel arise from composition and microstructural gradients from case to core. We investigated flow stress using thermomechanical testing in a Gleeble™ 3500 physical simulator coupled with Digital Image Correlation over 300oC to 600oC and strain rates of 0.1 – 5 s-1. DIC allows non-contact strain measurements that can be mapped to thermal gradients along the specimen, enabling us to capture non-uniform transient materials properties across a specimen. The experimental data are used for parametric identification of Johnson-Cook constitutive model. In situ collection of strain data during flow stress testing is inherently limited, and we propose benefits and opportunities for in situ diffraction-based studies. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Iron and Steel, Other |