About this Abstract |
Meeting |
2025 TMS Annual Meeting & Exhibition
|
Symposium
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Microstructural Evolution and Material Properties Due to Manufacturing Processes: A Symposium in Honor of Anthony Rollett
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Presentation Title |
Effects of Cellular Microstructure on Strength, Fatigue and Hydrogen Embrittlement of Additively Manufactured Alloys |
Author(s) |
Minh-Son Pham |
On-Site Speaker (Planned) |
Minh-Son Pham |
Abstract Scope |
The microstructure of metallic alloys fabricated by additive manufacturing (AM) is distinctively different to those made by cast (and wrought) alloys. In particular, cellular microstructure that contains dense dislocations at inter-cellular boundaries is one of the most recognisable signatures of AM microstructure. Such microstructure is found to be influential, governing the deformation and fracture behaviour of AM alloys. This talk examines the microstructure (including its stability) in as-fabricated and heat-treated conditions using advanced characterisation (such as atom probe microscopy), and discusses its influence in the plastic deformation behaviour, fatigue and hydrogen embrittlement of commonly 3D-printed alloys such as Inconel 718 and the high entropy Cantor alloy. The talk also higlights Prof. Rollett’s profound impacts on the speaker’s career development and research on process, microstructure and material design. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Mechanical Properties, Solidification |