63024 2025 eng 1 8 article Taylor & Francis Group 1 -- -- -- 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. Materials Research Letters 10.1080/21663831.2025.2497860 urn:nbn:de:kobv:b43-630241 2166-3831 publish 19.05.2025 Creative Commons - CC BY - Namensnennung 4.0 International Yen-Ting Chang Abhi Sharda Julian Rosalie Robert Maaß Marie A. Charpagne eng uncontrolled Plasticity eng uncontrolled Dislocations eng uncontrolled Avalanches eng uncontrolled Refractory high-entropy alloys Ingenieurwissenschaften und zugeordnete Tätigkeiten 5 Werkstofftechnik 5.1 Mikrostruktur Design und Degradation Material Degradationsmechanismen Verlagsliteratur Datei für die Öffentlichkeit verfügbar ("Open Access") Wissenschaftliche Artikel der BAM 5.0 Abteilungsleitung und andere Bundesanstalt für Materialforschung und -prüfung (BAM) https://opus4.kobv.de/opus4-bam/files/63024/Chang_MaterialsResearchLetters_2025.pdf