About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
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Presentation Title |
Micro-Scale Mechanical Properties of Additively Manufactured Stainless Steel |
Author(s) |
Xiaolei Guo, Yachun Wang, Gerald S. Frankel |
On-Site Speaker (Planned) |
Xiaolei Guo |
Abstract Scope |
The mechanical properties of additively manufactured alloys are often controlled by porosity, which is very difficult to avoid even for the most advanced metal 3D printers. In this study, porous stainless steel 316L samples were created via laser powder bed fusion (LPBF) processes. A micro-scale, in situ tensile testing system installed within a scanning electron microscope chamber was adopted to illuminate the effects of oxide inclusions on the mechanical properties of LPBF-produced stainless steels by making test samples small enough that the interference of porosity is eliminated. The evolution of the local strain was monitored in real time through digital image correction. The nucleation and growth of the oxides and their impacts on the mechanical properties of the as-printed and annealed alloys were systematically evaluated. The deformation mechanism was further explored via transmission electron microscopic characterization. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Mechanical Properties, Iron and Steel |