| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Cyclic Phase Transition Assisted Spark Plasma Sintering of AlCoCrFeNi Complex Concentrated Alloys |
| Author(s) |
Runjian Jiang, Elisa Torresani, Eugene Olevsky, Kenneth Vecchio |
| On-Site Speaker (Planned) |
Runjian Jiang |
| Abstract Scope |
The accelerated densification and optimized microstructure can be achieved in the spark plasma sintering of dual-phase AlCoCrFeNi complex concentrated alloys at a low temperature by applying cyclic phase transition (CPT). The refined intragranular BCC/B2 structure and the networked dendritic FCC phase are formed in this CCAs after CPT process. The CPT-assisted sintering not only promotes a fully dense structure that is unobtainable in regular sintering at lower-limit temperature (800oC), but also promotes an accelerated densification that does not exist in regular sintering at upper-limit temperature (1000oC). This densification behavior is contributed by distinctive elemental redistribution and nano-grain cluster, which promote the mass transfer and the superplasticity behavior in this CCAs. The CPT-assisted sintering leads to the formation of strengthened BCC/B2 matrix and toughened FCC phase in AlCoCrFeNi CCAs, which can be a promising strategy bringing a synergistic effect to overcome the strength-ductility trade-off in CCAs. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Characterization, Phase Transformations |