| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
A-79 (Digital): The Influence of Porosity and Defects on Fatigue Behavior in Additive Manufactured 316L Stainless Steel Using In-Situ X-Ray Computed Tomography |
| Author(s) |
Aeriel D. Murphy-Leonard, David Rowenhorst |
| On-Site Speaker (Planned) |
Aeriel D. Murphy-Leonard |
| Abstract Scope |
Three-dimensional techniques such as x-ray micro-computed tomography (XCT) enable the ability to fully visualize and quantify porosity and provide fundamental relationships between pore size and morphology on mechanical behavior and damage evolution. In the current study, the influence of pore and void size, morphology, and distribution on crack initiation, growth, and coalescence during tensile and cyclic loading was examined using XCT on additively manufactured (AM) 316L stainless steel. The samples were produced using laser powder bed fusion techniques where the gauge diameter was 1 mm. Static XCT revealed that in conditions where the cross-sectional area is small majority of the porosity was in-homogeneously distributed where a higher distribution of porosity was found near the surface which is commonly seen in additively manufactured materials. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |