Multiscale nano-tomography of additive manufacturing microstructures to enable grain scale DVC on a wide FOV

Additive Manufacturing (AM) of metals is a fast growing field mostly because of its ability to ease the building of sophisticated geometries. In this study, we focus on the Laser Beam Powder Bed Fusion (LB-PBF) of new Al alloys specifically designed for such processing routes. The objective is to determine the 3D microscale strain distribution of these alloys using different process parameters to tune the microstructure and better understand its link with the mechanical response. For this end, we need high resolution volumes allowing grain scale DVC (~35µm3 voxels), but on a wide FOV to understand the 3D mesoscale behavior of this peculiarly arranged material.
The two main objective of this proposal will be to :
- Develop a stable and repeatable method for acquiring 3D nano-tomographic data for DVC (ex-situ tensile tests) to then be applied to samples with varying microstructures.
- Get the data necessary to develop an AI assisted method to get wide FOV and high resolution volumes.