|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location Specific, Processing-Microstructure-Property-Relationships III
||Thermally-induced Microstructural Evolution of Additively Manufactured Inconel 718 via In-situ Bragg-edge Neutron Radiography and Diffraction
||Gian Song, Hassina Z. Billeux, Jean C. Bilheux, Jiao Lin, Qingge Xie, Ke An, Alexandru D. Stoica, Louis J. Santodonato, Ryan R. Dehoff, Michael M. Kirka, Sarma B. Gorti, Balasubramaniam Radhakrishnan, Anton Tremsin
|On-Site Speaker (Planned)
Additively manufactured (AM) materials require rigorous characterization methods and predictive modeling to establish a better understanding of processing-microstructure-performance relationships. Wavelength-dependent neutron radiography, the so-called Bragg edge radiography, is an in-situ non-destructive characterization technique with a capability to provide microstructure information of materials averaged over the sample thickness, grain orientation, residual stress, and phase distribution. In the present study, the Bragg-edge radiography and theoretical modeling were developed to characterize Inconel 718 components with a strong cube texture, introduced by site-specific control of AM technique. In-situ heating Bragg-edge radiography experiments were conducted at the Spallation Neutron Source (SNS) SNAP beamline and the experimental results were quantitatively analyzed using a theoretical model, which revealed thermally-induced dynamic evolution of the microstructure, such as grain-reorientation and grain-growth.
||Planned: Supplemental Proceedings volume