| About this Abstract |
| Meeting |
Liquid Metal Processing & Casting Conference (LMPC 2022)
|
| Symposium
|
Liquid Metal Processing & Casting Conference (LMPC 2022)
|
| Presentation Title |
Manufacturing Large Superalloy Ingots for Advanced Energy Systems |
| Author(s) |
John J. De Barbadillo, Brian Baker, Corey O'Connell |
| On-Site Speaker (Planned) |
John J. De Barbadillo |
| Abstract Scope |
The US Department of Energy, through the Office of Fossil Energy, has funded programs to demonstrate the US capability to make full-scale components for advanced energy applications such as Advanced Ultra-supercritical coal-fired steam boilers and turbines. The application which operates in the 700-800°C temperature range, requires large-diameter, heavy-wall pipes and bends, forged fittings such as “wyes” and shaft rotors. Recently completed work under contract DE-FE002564 included the manufacture of 915 mm diameter VIM/VAR and VIM/ESR/VAR ingots of INCONEL® alloy 740H® and a 915 mm diameter VIM/ESR/VAR 36” ingot of Haynes® 282® alloy. Both nickel-base alloys contain approximately 20% γ', and hence large ingots of these alloys are sensitive to solidification segregation, auto-aging and thermal stress cracking. This paper describes the melting and remelting of the ingots and presents remelting simulations that were used to guide parameter selection and verification testing. A brief overview of the extruded or forged products will be provided. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |