| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Mechanical Microscopy of Additively-manufactured Steels Using High-speed Nanoindentation |
| Author(s) |
Jeffrey M. Wheeler |
| On-Site Speaker (Planned) |
Jeffrey M. Wheeler |
| Abstract Scope |
Mechanical microscopy is an emerging technique using high-speed nanoindentation to map the mechanical behavior and extract phase-level properties from complex microstructures with micron-scale lateral resolution. As such, this is an ideal method to study the mechanical behavior of additively manufactured (AM) metal microstructures and assist in the optimization of processing parameters. In this work, mechanical microscopy was used to characterize the microstructures of 316L stainless steel deposited using five different AM techniques: laser powder bed fusion, direct energy deposition, fused filament fabrication of metal, binder jetting, and cold spray. Nanoindentation maps are observed to correlate well with bulk properties and provide insight into many microstructural features: porosity, defect phases, and crystallographic orientation through correlative EBSD maps. Statistical analysis of the microstructural phases using Gaussian and K-means methods are compared and discussed in relation with the material's crystallographic texture. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Other, Additive Manufacturing |