About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Environmental Degradation of Additively Manufactured Alloys
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Presentation Title |
Exploring the Stress-corrosion Cracking Susceptibility of Additively Manufactured 316L in Boiling Magnesium Chloride |
Author(s) |
Erin K. Karasz, Jason Taylor, David Michael Autenrieth, Philip Reu, Kyle Johnson, Michael Melia, Philip Noell |
On-Site Speaker (Planned) |
Erin K. Karasz |
Abstract Scope |
Additively manufactured metal parts can exhibit high levels of residual stress leading to stress-corrosion cracking (SCC) susceptibility. We explore the relationship between residual stress and SCC susceptibility in laser powder bed fusion 316L stainless steel using an ASTM G36-94 boiling magnesium chloride experiment. The residual stress of the surface perpendicular to the build direction was controlled by cutting samples from the build plate at varying heights, ranging from 250 to 50 MPa in this study, and by heat treatments (600, 800, and 1200 °C). All as-built samples showed SCC susceptibility. Samples heat-treated at or over 800 °C exhibited reduced residual stress from their as-built counterpart and were free of SCC after >300 hours of immersion in boiling magnesium chloride. Annealing at 600 °C showed similar SCC susceptibility to their as-built counterpart. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. SAND2021-7573 A |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Other, Other |