This summary focuses on the initial application of time-dependent surrogates for the AM process. Two advanced surrogate models, i.e. HDMR and PINNs, were employed to replace expensive simulations of the AM process, providing accurate and efficient approximations. In the future, we will employ these techniques to model all steps of the AM process to allow for efficient optimization.

摘要

In-situ High-energy X-ray Study of Deformation Mechanisms in Additively Manufactured 316 Stainless Steel Xuan Zhang$1Meimei Li$1Jun-Sang Park$1Peter Kenesei$1Jonathan Aimer$1; $1Argonne National Laboratory, 9700 S Cass Ave, Lemont IL 60525; xuanzhang@anl.gov;;;;; The key structural material in the core of the Transformational Challenge Reactor is the additively manufactured 316L stainless steel (AM 316L). Therefore, its deformation mechanism in service conditions must be understood. Previous studies have shown that the AM 316L possesses an outstanding balance of strength and ductility due to the unique hierarchical microstructure [1] or texture [2]. In this work, the room temperature tensile deformation of AM 316L SS was studied by in-situ high-energy x-ray diffraction and x-ray tomography/radiography techniques at the Advanced Photon Source (APS) in Argonne National Laboratory. The lattice strain evolution, the dislocation kinetics, and the coherent domain size evolution during the deformation process was monitored. The morphology of the pores in the AM 316L during deformation was tracked.