About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
Presentation Title |
Microstructure Evolution of a Stainless Steel Produced via Laser Powder Bed Fusion Subjected to Post-Fabrication Treatments |
Author(s) |
Gwenaelle Proust, Wen Hao Kan, Quentin Portella, Mahdi Chemkhi, Magnus Garbrecht, Delphine Retraint |
On-Site Speaker (Planned) |
Gwenaelle Proust |
Abstract Scope |
Thin specimens of 316L stainless steel were produced by laser powder bed fusion. After their manufacturing, these specimens were subjected to heat treatment at temperatures ranging from 400°C to 1000°C and/or Surface Mechanical Attrition Treatment (SMAT). SMAT is a severe plastic deformation process that enhances the surface properties of a material through the creation of an ultrafine grained layer on the top surface of the material. An investigation has been conducted to quantify the property improvements in term of hardness and tensile strength due the surface treatment. The microstructure of the different specimens was characterized using electron backscatter diffraction, transmission Kikuchi diffraction, and transmission electron microscopy. The microstructure features investigated on the specimens that have seen either or the combination of both treatments include thickness of the ultrafine grained regions, size of the grains within that region and residual strain distribution within the specimen thickness. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Additive Manufacturing, Iron and Steel |