TY  - JOUR
A1  - Chang, Yen-Ting
A1  - Sharda, Abhi
A1  - Rosalie, Julian
A1  - Maaß, Robert
A1  - Charpagne, Marie A.
T1  - A bcc refractory high-entropy alloy: the ideal case of smooth plastic flow
JF  - Materials Research Letters
N2  - Single crystalline metals exhibit correlated dislocation dynamics, irrespective of lattice system. This collective evolution of dislocation structures is intermittent and scale-free, implying divergent length scales that play a critical role in failure initiation and therefore microstructural design. Here we report on a HfNbTaTiZr refractory high-entropy alloy, that lacks criticality in the collective dislocation response. This unusual behaviour manifests itself in almost quenched-out microplastic stress-strain fluctuations and sluggish dislocation avalanching, otherwise only seen in complex engineering alloys. These findings demonstrate how the high-entropy paradigm can serve as a role model to effectively suppress unwanted plastic fluctuations in metals deformation.
KW  - Plasticity
KW  - Dislocations
KW  - Avalanches
KW  - Refractory high-entropy alloys
PY  - 2025
UR  - https://nbn-resolving.org/urn:nbn:de:kobv:b43-630241
DO  - https://doi.org/10.1080/21663831.2025.2497860
SN  - 2166-3831
SP  - 1
EP  - 8
PB  - Taylor & Francis Group
AN  - OPUS4-63024
LA  - eng
AD  - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER  -