About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
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Additive Manufacturing Modeling, Simulation and Machine Learning
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Presentation Title |
On Predicting the Fatigue Behavior of Direct Aged L-PBF IN718 Using Machine Learning Informed by μXCT and EBSD |
Author(s) |
Alexander N. Caputo, Chaitanya Vallabh, Haolin Zhang, Xiayun Zhao, Richard Neu |
On-Site Speaker (Planned) |
Alexander N. Caputo |
Abstract Scope |
Additive manufacturing (AM) increases the design freedom for difficult to machine alloys like IN718. With its many potential benefits, the stochastic mechanical behavior of components made by AM keeps this process from broader implementation. This study was conducted to determine the stochastic high temperature fatigue properties of AM IN718 components built with varying process parameters, and to use microstructural information collected from μXCT and EBSD to train a set of machine learning-based statistical models to predict the fatigue properties. To this end, μXCT was conducted to characterize all detectable porosity in the gage region of each specimen. HCF testing of 110 direct aged L-PBF IN718 fatigue specimens was conducted at 538℃. EBSD was used to characterize the crystallographic microstructure produced by each process parameter combination. All these data were used to train a SVR model, a RF model, and a shallow and deep NN to predict fatigue life. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, High-Temperature Materials, Machine Learning |