Advanced Deep Learning‐Based 3D Microstructural Characterization of Multiphase Metal Matrix Composites

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Abstract
The quantitative analysis of microstructural features is a key to understanding the micromechanical behavior of metal matrix composites (MMCs), which is a premise for their use in practice. Herein, a 3D microstructural characterization of a five‐phase MMC is performed by synchrotron X‐ray computed tomography (SXCT). A workflow for advanced deep learning‐based segmentation of all individual phases in SXCT data is shown using a fully convolutional neural network with U‐net architecture. High segmentation accuracy is achieved with a small amount of training data. This enables extracting unprecedently precise microstructural parameters (e.g., volume fractions and particle shapes) to be input, e.g., in micromechanical models.
Funding Information
  • Deutsche Forschungsgemeinschaft (BR 5199/3-1)

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