About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing Fatigue and Fracture V: Processing-Structure-Property Investigations and Application to Qualification
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Presentation Title |
Design of Fatigue Resistant Additive Manufactured Austenitic Stainless Steels |
Author(s) |
Jonathan W. Pegues, Seungjong Lee, Theron Rodgers, David Siaz, Shaun Whetten, Andrew Kustas, Michael Roach, Nima Shamsaei |
On-Site Speaker (Planned) |
Jonathan W. Pegues |
Abstract Scope |
The unpredictable fatigue behavior of additive manufactured (AM) materials has limited their widespread adoption for use in fatigue critical applications. To overcome this challenge, models capable of predicting microstructure and fatigue performance of AM materials under a variety of processing and loading conditions are necessary. This talk reviews some recent work in establishing the process-structure-property relationships of AM austenitic stainless steels as they relate to fatigue resistance. The deformation behavior and failure mechanisms associated with the surface and microstructural characteristics are considered to estimate fatigue performance under various loading conditions. In addition, a computational method to predict the microstructures resulting from different processing conditions is explored and compared with experimental observations. These results are discussed in the context of leveraging additive manufacturing to produce site specific microstructures/properties and improving confidence of AM parts in fatigue critical applications.
SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525 |
Proceedings Inclusion? |
Planned: |