A primary creep model of nickel-base superalloys is developed for the low-temperature-high-
stress regime, which provides insight into the active micro-mechanisms, extracted from …

Mechanical properties of nickel-base superalloys can be greatly influenced by spatial
variation of γ′ microstructure, calling for models at mesoscale to study additional …

The electronic structure, interatomic bonding, and mechanical properties of two supercell
models of Ni-based superalloys are calculated using ab initio density functional theory …

Driven by the need to reduce CO 2 emissions from fossil power generation, new turbine
working fluids are being investigated. One such fluid, supercritical carbon dioxide (sCO 2) …

Steam turbine and boiler materials for Advanced Ultra-Supercritical (A-USC) coal-fired
power plants are required to withstand steam conditions up to 760° C and 35 MPa for a …

Several nickel-based superalloys have been tested for high temperature applications for use
in advanced ultra-supercritical (AUSC) fossil-fired power plants through laboratory and …

The goal of this project contains three major aspects:(1) critical assessment of existing
experimental data,(2) critical assessment of existing modeling capabilities and (3) …

The goal of the project was to model material behavior and degradation during cyclic
plasticity—with and without hold time—for nickel-based superalloys used in USC (ultra …

Based on the concept of precipitation hardening, novel ferritic alloys FBB8+ 2 wt.% Hf,
FBB8+ 2 wt.% Zr, and FBB13+ 3.5 wt.% W alloys were developed and investigated, in order …

Progress on modeling the the creep of thick sections welds in Alloy 740H is reported. Climb
of dislocations during creep has been added to the model. Creep testing is continuing and …