About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing of Metals: Applications of Solidification Fundamentals
|
Presentation Title |
A-82: Understanding the Effect of Solute Elements on the Evolution of Equiaxed and Columnar Grains in AM Processed Beta Titanium Alloys |
Author(s) |
Mohan Sai Kiran Kumar Yadav Nartu, Srinivas Aditya Mantri, Brian Welk, Narendra Dahotre, Hamish Fraser, Rajarshi Banerjee |
On-Site Speaker (Planned) |
Mohan Sai Kiran Kumar Yadav Nartu |
Abstract Scope |
Virtually, all additive manufacturing (AM) processes involving complete melting of metal powders/wires produce significantly textured columnar grains along build-direction, which are deleterious for mechanical properties. Therefore, understanding growth and texture of these columnar grains become crucial for AM alloys. Significant research in the last decade has been focused on extending the concept of growth restriction factor (GRF) (a classical theory originally developed for conventional casting) to AM. However, there are some critical concerns regarding the applicability of GRF model to AM and there is a need to understand and validate this model. Current work analyzes the evolution of grain morphology and texture in few commercial as well as model metastable beta titanium alloys processed via AM. Results indicate that the GRF model fails to interpret the grain growth behavior in these alloys. Alternatively, an approach based on solidification range has been proposed for the first time to rationalize the observations. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Solidification, Titanium |