About this Abstract |
Meeting |
Superalloys 2024
|
Symposium
|
Superalloys 2024
|
Presentation Title |
Microstructurally Informed Material Model for Haynes® 282 |
Author(s) |
Monica A. Soare, Vito Cedro III, Vipul Gupta, Mallikarjun Karadge, Reddy Ganta, Alon Mazor |
On-Site Speaker (Planned) |
Alon Mazor |
Abstract Scope |
The precipitation strengthened alloy Haynes® 282 possesses very good strength, creep resistance and corrosion resistance at high temperatures. It is one of the best candidates for a range of high temperature components for next generation of power systems as Advanced Ultra-Supercritical (A-USC) boilers and steam turbines, Supercritical carbon dioxide (sCO2) power cycles as well for aerospace gas turbine parts (combustor lines, nozzles, exhaust sections). Some of these components operate for very long time (30-40 years) during which they are subjected to high temperature (up to 60% of the Liquidus Temperature, Tm) creep as well as cyclic loading (cyclic temperature and stress variations). Assessing long term material behavior through combined accelerated testing and model predictions, is an important step in the material qualification process. Towards this goal, a material constitutive model was developed capturing long term creep as well as cyclic plasticity, with and without hold time at two temperatures: 593 °C and 760 °C. The model was calibrated on creep and low cycle fatigue tests performed on smooth specimens. The model predictions were compared with experimental data performed on smooth circular and on notched specimens, in terms of stress-strain response and number of cycles to failure. |
Proceedings Inclusion? |
Definite: At-meeting proceedings |