About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
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Advanced Characterization Techniques for Quantifying and Modeling Deformation
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Presentation Title |
Investigation of Porosity, Texture, and Damage Evolution of Additively Manufactured 316L Stainless Steel during In-situ Tensile Loading Using High Energy X-rays |
Author(s) |
Aeriel D. Murphy-Leonard, David Rowenhorst |
On-Site Speaker (Planned) |
Aeriel D. Murphy-Leonard |
Abstract Scope |
The micromechanical response of additive manufactured 316L stainless steel produced via laser powder bed fusion was investigated during in-situ tensile loading using high energy x-rays. X-ray computed tomography (XCT) measurements were performed to determine the initial porosity and monitor the evolution of porosity during tensile loading as well as detect the initiation and growth of cracks from defects in the specimens. Far-field x-ray diffraction measurements were performed to quantify crystallographic texture and the distribution of elastic strains during loading. The initial texture was so that a strong {220} texture was aligned parallel to the build direction showing the preferred crystallographic texture that arises during building. As a result of tensile deformation, a strong {111} + {200} double fibre texture develops at high tensile strains and remains until fracture. XCT confirmed that both pore wall thinning and crack bridging influenced the evolution of porosity and damage during tensile loading. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |