Evaluating the Tensile Behavior of ODS GARS Alloys fabricated via L-PBF at elevated Temperature

This study investigates the tensile behavior of Oxide Dispersion Strengthened samples fabricated using Laser Powder Bed Fusion (L-PBF) at room and elevated temperatures. Feedstock powder made using a novel Gas Atomized Reaction Synthesis (GARS) method, which bypasses the limitations of mechanical alloying such as batch to batch variation, contamination, and irregularly shaped particles, has been used for this study. This investigation employs two distinct material chemistries: a base 14YTW alloy and a variant with zirconium additions to fabricate 30 x 18 x 15 mm blocks in argon. Miniaturized tensile specimens (SSJ-2) were extracted in various orientations (horizontal, vertical, and angular) from the block to assess the influence and impact of anisotropy on the tensile properties of the specimens. Samples derived from these differing orientations were subjected to tensile testing at room temperature and elevated temperatures of up to 500°C, aiming to evaluate the material’s intrinsic properties within their anticipated operational temperature range.