|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Gamma (FCC)/Gamma-Prime (L12) Co-Based Superalloys II
||Influence of Alloy Composition on Oxide Scale Formation in Novel Co-Based γ-γ’ Superalloys
||Colin A Stewart, Akane Suzuki, Tresa Pollock, Carlos Levi
|On-Site Speaker (Planned)
||Colin A Stewart
A set of combinatorial libraries have been generated across Co-Ni-W-Al-Cr space to develop an understanding of compositional effects on intrinsic oxidation resistance at 1100°C in Co-based alloys relevant to γ-γ’ superalloys. Photo-stimulated luminescence spectroscopy is employed to rapidly assess the presence of α-Al<SUB>2</SUB>O<SUB>3</SUB> , and further characterization is accomplished with SEM/EDX. Domains of composition where α-Al<SUB>2</SUB>O<SUB>3</SUB> forms are outlined, and insights from the onset of external Al<SUB>2</SUB>O<SUB>3</SUB> formation and the presence of non-protective oxides are discussed.