|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Gamma (FCC)/Gamma-Prime (L12) Co-Based Superalloys II
||Integrated Computational Materials Engineering of Co Bushing Alloy
||Ida S. Berglund, James Saal, Jason Sebastian, David Snyder, Clay Houser, Dana Frankel, Nicholas Hatcher, Gregory Olson
|On-Site Speaker (Planned)
||Ida S. Berglund
To address the need for replacing Be-containing alloys, Integrated Computational Materials Engineering (ICME) tools have been applied to the design of L12 precipitate-strengthened high-strength wear-resistant Co-base alloy. Thermodynamic and kinetic databases were optimized and used in the design. Heat treatment optimi¬zation enabled more efficient homogenization and a reduction in the anneal time. Property optimization centered on achieving higher yield strength in the Co alloy through simulation-driven thermal process optimization. To reduce the isothermal temper time to peak strength, an experimental aging study was coupled with precipitation simulations to identify novel temper schemes, including a two-step process. Two intermediate scale prototypes have been produced and prepared for testing, including sub-scale bushing testing, with preliminary data confirming high potential for the alloy as a CuBe replacement.