22 February 2013 An exhaustive model for the laser hardening of hypo eutectoid steel
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This article presents an exhaustive mathematical model for the simulation of hypo-eutectoid carbon steel trans- formations during laser hardening. The proposed model takes into consideration all the the phenomena involved in the process with particular attention to implementing easy mathematical formulas in order to optimize the trade-o between the accuracy of the predicted results and the computational times. The proposed model calculates the 3D thermal eld occurring into the workpiece and predicts the microstructural evolution of the target material exploiting an original approach based on the de nition of thermodynamic thresholds. Several parameters and phenomena are taken into consideration in order to accurately simulate the process: laser beam characteristics, scanning strategy of the target and tempering e ect due to mutually interacting beam trajecto- ries.
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Alessandro Fortunato, Alessandro Fortunato, Leonardo Orazi, Leonardo Orazi, Gabriele Cuccolini, Gabriele Cuccolini, Alessandro Ascari, Alessandro Ascari, } "An exhaustive model for the laser hardening of hypo eutectoid steel", Proc. SPIE 8603, High-Power Laser Materials Processing: Lasers, Beam Delivery, Diagnostics, and Applications II, 86030F (22 February 2013); doi: 10.1117/12.2007389; https://doi.org/10.1117/12.2007389

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