|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||2016 Technical Division Student Poster Competition
||SPG-36: Mechanical Characterization of Free Form Cold Spray Al 1100 Deposits
||Benjamin White, William Story, Brian Jordon, Luke Brewer
|On-Site Speaker (Planned)
Previous work has explored the use of cold spray (CS) deposits as coatings and to a lesser degree as an additive repair process, but there is no published work on the mechanical properties of free form CS deposits. In this work several combinations of spray parameters were used to spray thick (>0.5 in) deposits of commercially pure Al 1100 onto like substrates. These deposits were then removed from the substrate, conventionally machined into dog bone and metallographic specimens, and tested in monotonic tension and fatigue. Metallographic analysis using optical and electron microscopy found high levels of inter-layer porosity, indicating poor adhesion between layers. It was found that for both monotonic and cyclic loading, this porosity was the biggest determining factor in performance. The deposit thicknesses necessary for additive manufacture/repair poses significant challenges requiring more investigation into spray strategy and optimization.
||Definite: None Selected