|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||Effect of the Isotropic and Anisotropic Work Hardening on the Micromechanics Behavior in Textured Inconel 718 by Electron Beam Additive Manufacturing
||Qingge Xie, Alexandru Dan Stoica, Sarma B. Gorti, Radhakrishnan Balasubramaniam, Gian Song, Hassina Z. Bilheux, Michael M. Kirka, Ryan R. Dehoff, Jean-Christophe Bilheux, Ke An
|On-Site Speaker (Planned)
Inconel 718 alloys with a strong cube texture component and elongated grain shape were prepared via electron beam additive manufacturing. The time-of-flight neutron diffraction technique was employed to in-situ measure the lattice strain evolution of different families of grains with their specific crystallographic-plane normal either parallel or perpendicular to the loading direction. Elastic-plastic finite element modeling (EPFEM) framework was used to simulate the lattice strain and grain orientation evolution. Both the isotropic type of work hardening law and the anisotropic type of work hardening law were implemented respectively in the model to understand their effects on the plastic anisotropic behavior and their effects on the grain orientation evolution. Results demonstrated that the anisotropic work hardening law is necessary to accurately capture the plastic anisotropic behavior of each grain in the polycrystal. The correlation between the identified coefficients of the anisotropic work hardening law and the micromechanical behavior will be illustrated.
||Planned: Supplemental Proceedings volume