|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Additive Manufacturing for Energy Applications III
||Elevated Temperature Dip in Tensile Elongation of an Additively Manufactured Al-Cu-Ce Alloy
||Sumit Bahl, Kevin Sisco, Jonathan D. Poplawsky, Richard A. Michi, Lawrence F. Allard , Ryan R. Dehoff, Alex Plotkowski, Amit Shyam
|On-Site Speaker (Planned)
Higher temperature aluminum alloys are attractive materials that afford lightweighting solutions to replace heavier alloys. Additive manufacturing is increasingly investigated as a means to develop new aluminum alloys with superior mechanical properties, benefitting from the unique microstructures produced in bulk form that have been largely unattainable by conventional material processing techniques. In this work, we describe a dip in tensile elongation noted at elevated test temperatures in an Al-Cu-Ce alloy fabricated with selective laser melting. The dip in elongation is related to the concomitant dip in strain rate sensitivity of the alloy. The results of multiscale microstructural characterization are discussed to explain plausible reasons for the dip in strain rate sensitivity and tensile elongation.