| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture IV: Toward Confident Use in Critical Applications
|
| Presentation Title |
High Strain Rate Fracture Properties of Additively Manufactured (AM) Stainless Steel |
| Author(s) |
Kevin Lamb, Josh Kacher, Katie Koube |
| On-Site Speaker (Planned) |
Kevin Lamb |
| Abstract Scope |
The majority of mechanical property testing for AM samples has been dedicated to static or quasi-static loading conditions. Typically, those properties represent commonly accepted attributes used by design engineers. In reality, the mechanical properties of materials under rapid loading conditions often differ greatly from the static case.
Gas gun uniaxial strain plate-impact experiments were performed to determine high strain rate compression and tensile (spall) strength and fracture behavior of additively manufactured 316L SS samples at flyer plate velocities up to 1000 m/s (producing strain rates up to 10^5 s-1). The dynamic strength based on free-surface velocity measurements using VISAR and PDV interferometry, combined with in-depth characterization of the fracture morphology on soft-recovered impacted samples using electron microscopy will be presented. Correlation of the strength and fracture behavior with respect to voids within AM steels coupled with NDE of the samples to enable process-structure-property mapping will be discussed. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |