About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Deformation and Damage Mechanisms of High Temperature Alloys
|
Presentation Title |
Composition and Heat Treatment Modifications of a New Low-cost Ni Base Wrought Alloy for Improved Creep Resistance and Elevated Temperature Ductility |
Author(s) |
Ning Zhou, Filip Van Weereld, Gian Colombo |
On-Site Speaker (Planned) |
Ning Zhou |
Abstract Scope |
A new low-cost γ' strengthened wrought Ni base alloy was developed to offer higher temperature capability than 718 and lower cost than Waspaloy. Although this new alloy achieved superior elevated temperature strength (yield and UTS), it did not simultaneously match the creep performance and ductility with Waspaloy at elevated temperatures. Chemistry modifications were performed by fixing the amount of γ' forming elements including Al, Ti and Nb, to keep the equilibrium γ' fraction unchanged for good mechanical performance as well as processability, while varying elements such as Co, Ni, Fe and W to examine their impact on various properties including creep and ductility. Various heat treatments were also examined to balance the strength and creep resistance. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, Mechanical Properties, |