Pilote session in preparation of the AM hub proposal or 2024 (same setup as ME1613 Chen et al. January 2023 ID19)

Laser Additive Manufacturing (LAM), has the potential to revolutionize manufacturing processes. However, its wider industrialisation is currently inhibited by solidification cracking, and distortion, and most importantly a large distribution of entrained defects. It is critical to establish a scientific understanding of how to control defect formation and thus optimise mechanical performance in LAM. At the ESRF, taking advantage of the recent EBS upgrade, in-situ and ex-situ investigations have been used to establish a well-rounded picture of the LAM process. The outstanding photon flux density at ESRF can reach ultra-high temporal resolution at hard X-ray energies allow for imaging with high sensitivity. Combining fast radiography with an in-situ LAM rig, fast X-ray imaging enables the observation of the laser-matter interaction, defects formation, and microstructural features evolution. In this beamtime, we plan to explore the grain refinement from new LAM alloy system.