About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
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Presentation Title |
Post-processing Strategies to Improve Fatigue and Fracture Behavior of Additively Manufactured Metals |
Author(s) |
Jake T. Benzing, Orion Kafka, Nicholas Derimow, Nik Hrabe, Sara Randall, Julius Bonini, Whitney Poling, Tyson Brown, Donald Godfrey, Philipp Schumacher, Frank DelRio, Chad Beamer, Ryan Fishel |
On-Site Speaker (Planned) |
Jake T. Benzing |
Abstract Scope |
Use of additive manufacturing in biomedical device, aerospace, and automotive requires materials of known, repeatable properties that are resistant to fracture. Post-processing strategies are used to optimize the final microstructure and fatigue performance of titanium, nickel, and steel alloys produced by powder bed fusion. Titanium and nickel parts were subjected to hot isostatic pressing and vacuum furnace aging treatments. Selections of time, temperature, and cooling rate were considered to eliminate or take advantage of microstructural heterogeneities. Additive enables low volume part production and flexible manufacturing for the automotive industry. Post-processing steps are limited to minimize cost, leading to potential porosity and microstructure heterogeneity. Steel parts were subjected to either a stress relief or a quench and temper heat treatment. The effects of these treatments on microstructure and fatigue crack growth behavior (compact tension experiments) will be presented. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Mechanical Properties, Other |