Grain structure

The objective of GISTEAMMM is to characterize the grain structure generated by laser powder bed fusion (L-PBF) process at track scale: one track or single wall with several tracks, in which the grain structures will be obtained by both experiment and thermo-metallurgical-mechanical modelling. The anisotropic elastic-viscoplastic material laws at grain levels are expected to be extracted by considering the influence of inherent residual stress generated during printing process.

GRAMME project aims at developing an efficient and relevant coupling strategy in laser powder bed fusion (LPBF) process modelling between microstructure development and anisotropic mechanical behaviour at part scale during and after construction. An efficient computational platform based on model-order reduction and experimental validations will be established by the end of the project to meet this objective.