The files uploaded here constitute the raw data files for the experimental results presented in the paper named above. SEM BSE images and EDX maps are provided. TEM BF images and SADPs are also provided. Some additional SEM EDX maps are given, which were not presented in the paper, that further support the statements made in the paper. The raw .dm3 picture files generated from the Osiris microscope are available. Raw INCA .ipj files are also included. Readme files are included in where appropriate.
 
The dataset will be updated with publication details.
 
The article associated with this dataset can be found on the Cambridge University Repository at https://www.repository.cam.ac.uk/handle/1810/251467

Research data supporting: "Precipitation in the Equiatomic High-Entropy Alloy CrMnFeCoNi"

High-entropy alloys with heterogeneous microstructure: Processing and mechanical properties

Most multicomponent high-entropy alloys (HEAs) lose ductility with increasing strength, similar to conventional materials. We controllably introduced novel gradient nano-scaled dislocation-cell str...

Gradient-cell–structured high-entropy alloy with exceptional strength and ductility

Simultaneous enhancement of strength and ductility in a NiCoCrFe high-entropy alloy upon dynamic tension: Micromechanism and constitutive modeling

Novel Si-added CrCoNi medium entropy alloys achieving the breakthrough of strength-ductility trade-off

The mechanical properties and microstructure evolution of dual-phase Al0.6CoCrFeNi high-entropy alloys (HEAs) upon dynamic loading are investigated. Dynamic impact tests with varying strain rates of 2800–4000 s−1 at room temperature are performed by the split-Hopkinson pressure bar (SHPB). The yielding strengths evidently increase with increasing the strain rate for the present system. The high strain-rate sensitivity (SRS) parameter is extracted from the observed stress-strain responses. A modified Johnson-Cook (J-C) plasticity constitutive model is proposed to characterize the dynamic flow behavior. Nanoscale deformation twins induced by dynamic loading, accompanied by high density dislocation substructures, realize the excellent strength-ductility combination. According to the critical stress theory, the stacking fault energy (SFE) of the FCC phase can be estimated to be about 36 mJ/m2, which is evidently lower than the overall SFE for the Al0.6CoCrFeNi HEA.

Mechanical response and deformation behavior of Al0.6CoCrFeNi high-entropy alloys upon dynamic loading

Revealing the Hall-Petch relationship of Al0.1CoCrFeNi high-entropy alloy and its deformation mechanisms

Strength-ductility synergy of Al0.1CoCrFeNi high-entropy alloys with gradient hierarchical structures

Al0.3CoCrFeNi high-entropy alloys (HEAs) with B2 ordered phase mainly precipitated at grain boundaries are obtained by cold rolling, annealing and aging treatment. Tensile experiments show that both CRSA (annealed at 1100 °C for 1 h) and CRSA-600-24 (annealed at 1100 °C for 1 h and subsequently aging treatment at 600 °C for 24 h) samples have excellent combinations of yield strength, tensile strength and tensile elongation at room temperature, and more importantly, simultaneous enhancements in strength and ductility at liquid nitrogen (77 K) are attained for the latter condition. Analyses reveal that after aging treatment, the precipitation of B2 phase with ultrafine-grained or even nanoscale sizes, as well as moderate grain refinement, yields the significant increase in tensile strength and fascinating tensile plasticity. By transmission electron microscopy (TEM) characterization, it is found that the deformation mode dominated by dislocation glide at room temperature is transformed to that combined with dislocation glide plus nanoscale twinning at 77 K. Moreover, the twinning-induced work hardening renders the onset of necking instability to a higher strain/stress value, which therefore improves the strength and ductility simultaneously.

D. Zhao

Papers

Simultaneous enhancement of strength and ductility in a NiCoCrFe high-entropy alloy upon dynamic tension: Micromechanism and constitutive modeling

Mechanical response and deformation behavior of Al0.6CoCrFeNi high-entropy alloys upon dynamic loading

Revealing the Hall-Petch relationship of Al0.1CoCrFeNi high-entropy alloy and its deformation mechanisms

Strength-ductility synergy of Al0.1CoCrFeNi high-entropy alloys with gradient hierarchical structures

Superior tensile properties of Al0.3CoCrFeNi high entropy alloys with B2 precipitated phases at room and cryogenic temperatures