About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated Through Novel In-Situ Experiments and Modeling
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Presentation Title |
Using High Energy X-rays to Investigate the Evolution of Plastic Strain and Damage in Additively Manufactured 316L Stainless Steel |
Author(s) |
David J. Rowenhorst, Aeriel Leonard |
On-Site Speaker (Planned) |
David J. Rowenhorst |
Abstract Scope |
Additive manufacturing (AM) has presented a new processing route for structural alloys, but also leads to highly complex microstructure and defect populations. In this study we examine the behavior of the evolution of damage, texture, and strain in additive manufactured (AM) 316L stainless steel produced via laser powder bed fusion using in-situ tensile loading using high energy X-rays at the Cornell High Energy Synchrotron Source (CHESS). A combination of computed tomography and diffraction tomography was used to reconstruct the defect structure, texture, and strain in the material as it was loaded in tension. The results showed considerable changes in the crystallographic texture during loading. Additionally the inhomogeneous distribution of porosity near the as-built surface played a significant role in the failure of the material as voids and cracks initiated at pre-existing pores coalesced, leading to the eventual failure of the sample. |
Proceedings Inclusion? |
Planned: |