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Meeting MS&T24: Materials Science & Technology
Symposium Phase Stability of Additively Manufactured Materials in Extreme Environments
Sponsorship TMS: Phase Transformations Committee
TMS: Additive Manufacturing Committee
Organizer(s) Ashley E. Paz Y Puente, University of Cincinnati
Dinc Erdeniz, University of Cincinnati
Eric J. Payton, University of Cincinnati
Matthew A. Steiner, University of Cincinnati
Gregory B. Thompson, University of Alabama
Janelle P. Wharry, Purdue University
Scope From high efficiency turbines to heat exchangers to nuclear reactors, additive manufacturing (AM) has captured the attention of design engineers seeking to take advantage of intricate geometries unattainable by conventional materials processing. Likewise, materials engineers have been enthusiastic about the opportunities that AM presents for using alloys that cannot be processed by conventional thermomechanical routes. Novel designs and the manufacturing process present their own challenges. The non-uniform thermal history and non-equilibrium conditions produced during many additive manufacturing processes result in microstructural heterogeneity within a single build and unexpected phases forming as compared to wrought or cast processes. Residual porosity, anisotropic arrangements of defects, and surface roughness could exacerbate degradation in extreme environments. The focus of this symposium is to simultaneously highlight innovative solutions to engineering challenges that have been unlocked by AM while illuminating the limitations of materials in environments featuring complex interactions between chemical, mechanical, and thermal loads. Of interest is comparison of the chemo-mechanical responses of additively manufactured materials to those that have been conventionally processed. The symposium aims to bring together both experimental and computational work to elucidate the unique characteristics that AM-related microstructural inhomogeneity imparts on materials performance under imposed loads outside of the typically recommended ranges for conventional alloys of related composition. Understanding and characterizing the microstructure, both in the as-built and post-processed state, and how it translates to the properties and performance of AM materials under extreme environments is critical for widespread adoption of this technology.

Topics of interest include, but are not limited to experimental, computational, or theoretical studies related to phase transformations and microstructural evolution in additively manufactured materials exposed to or intended for extreme environments such as high temperatures, high strain-rates, corrosive agents, irradiation, hydrogen, etc.
Abstracts Due 05/15/2024
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