Linking processing parameters with melt pool properties of multiple nickel-based superalloys via high-dimensional Gaussian process regression
Nandana Menon , Sudeepta Mondal , Amrita Basak
Journal of Materials Informatics ›› 2023, Vol. 3 ›› Issue (1) : 7
Linking processing parameters with melt pool properties of multiple nickel-based superalloys via high-dimensional Gaussian process regression
A physics-based model is used to predict the melt pool properties in the laser-directed energy deposition of several nickel-based superalloys for different process parameters. The input space is high-dimensional, consisting of a common 19-dimensional composition space for each alloy and the process parameters (laser power and scan velocity). Gaussian Process-based regression frameworks are developed by training surrogates on data generated by a validated analytical model. These surrogates are thereafter used to predict and define relationships between the composition, resultant thermophysical properties, process parameters, and the subsequent melt pool property. The probabilistic predictions are augmented by uncertainty quantification and sensitivity analysis to substantiate the findings further.
Laser directed energy deposition / Gaussian process / nickel-based superallloys / melt pool properties / uncertainty quantification / sensitivity analysis
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