Wednesday  |  Phipps  |  03:30 PM–03:50 PM

#13965, Repair of High Hard Steel using Same Filler Material by a Solid-State Additive Manufacturing Approach

Additive Friction Stir-Deposition (AFS-D) provides a new path for additively repairing materials damaged in-service. In this work, simulated repair of a machined crack or defect in a plate of ARMOX 500T steel was performed across varying grooved morphologies and depths. Specifically, three different groove depths and three different sets of process parameters were correlated to the resulting deposition microstructure and mechanical properties. Macroscopically, side wall adhesion performed well on a V-shaped groove; however, in some of the process parameters and groove depths, poor mixing and porosity was observed at the base of the V-groove. Analysis of the phases and grain structure was performed using optical and electron microscopy techniques. Lastly, hardness mapping was preformed across the deposition cross-sections, and the hardness results show a decrease in hardness of the deposition compared to the substrate with a well-defined heat affected zone.

Troy Pierson   The University of Alabama