About this Abstract |
Meeting |
2nd World Congress on High Entropy Alloys (HEA 2021)
|
Symposium
|
2nd World Congress on High Entropy Alloys (HEA 2021)
|
Presentation Title |
ON DEMAND: Refractory Metals-based High Entropy Alloys: Phase Evolution and Radiation Damage Studies |
Author(s) |
Poulami Chakraborty, Nilabja Kanti Sarkar, Bathula Vishwanadh, Raghvendra Tewari, Srikumar Banerjee |
On-Site Speaker (Planned) |
Poulami Chakraborty |
Abstract Scope |
Present study reports phase evolution in equi-atomic Nb, V, Ti, Zr and Al alloy during cooling subsequent to levitation melting and laser surface melting. A large volume fraction of this alloy exhibited single phase grains having a composition of 35Nb25V25Ti10Al5Zr (all atom %). Bulk melting of an alloy of such a composition, followed by homogenisation annealing and quenching resulted in the formation of a single-phase bcc microstructure. The latter alloy, however, exhibited concomitant tendencies for clustering (phase separation into two bcc phases with differing compositions) and ordering (leading to the formation of the ordered B2 structure), which have been followed by detailed microstructural observations. These results have been rationalised in terms of thermodynamics of this multi-component system. Microstructural evolution during irradiation has also been studied with a view to examining the stability of these alloys in an intense radiation field. |
Proceedings Inclusion? |
Undecided |