Graph Neural Network Feature data fusion 1 Grain size and shape 1 Graph neural networks 1 Hall-Petch effects 1 Hall–Petch effect 1 Hardness 1 Maps 1 Microstructural features 1 Misorientation 1 Misorientations 1 Modeling 1 Nano scale 1 Networks on surfaces 1 Neural network model 1 Polycrystalline metals 1 Polycrystallinity 1 Self-attention mechanism 1 Spatial-Temporal models 1 Textures 1 Traffic flow prediction 1