About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Materials for High Temperature Applications: Next Generation Superalloys and Beyond
|
Presentation Title |
Creep Deformation Behavior of Ni - 33 Co Alloy |
Author(s) |
Divya Bandla, Atul Harish Chokshi |
On-Site Speaker (Planned) |
Divya Bandla |
Abstract Scope |
Since the identification of dominating deformation mechanism in multi-principle elemental alloys (MPEAs) is difficult, we considered a relatively simple way to evaluate the deformation mechanisms, to approaching the MPEAs through the concentrated solid solution alloys. Ni33Co alloy with a grain size of 100 µm was prepared through the melting, casting, rolling, and recrystallization. The XRD technique confirms the FCC crystal structure with the lattice parameter of 0.3546 nm. The elastic modulus of the alloy is 215 GPa from digital image correlation in conjunction with uniaxial compression testing, nanoindentation, and an immersion ultrasonic inspection technique. The creep tests were performed at 873 and 973 K over stress levels of 30–125 MPa revealed the dislocation climb as a dominating mechanism. The increase in dislocation density level after creep deformation was determined from XRD and EBSD–KAM maps. The deformation mechanism map for Ni33Co alloy is also developed and validated with the current data. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, Mechanical Properties, Other |