Phase Stability of a Mechanically Alloyed CoCrCuFeNi High Entropy Alloy

Shanmugasundaram, T.; Bouzy, Emmanuel; Hazotte, Alain

doi:10.1002/adem.201700095

Cited by 49 publications

(25 citation statements)

References 38 publications

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“…Meanwhile, we compare the calculated lattice constants with available experimental and theoretical data for CrFeCoNi and CrFeCoNiCu HEAs, as listed in Table 1. It can be found that the corresponding theoretical predications are 3.578Å and 3.590Å, respectively, which are very close to the previous experimental data for CrFeCoNi and CrFeCoNiCu HEAs, [40][41][42][43][44] and the theoretical data for CrFeCoNi HEA, 42,45 the comparison results verify the validity of the theoretical analysis method.…”

Section: Resultssupporting

confidence: 83%

Mechanical properties of CrFeCoNiCu_x (0 ≤ x ≤ 0.3) HEAs from first-principles calculations

et al. 2020

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Section: Resultssupporting

confidence: 83%

Mechanical properties of CrFeCoNiCu_x (0 ≤ x ≤ 0.3) HEAs from first-principles calculations

et al. 2020

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“…Moreover, a small content of Ni was also found in some particles. The contamination of Fe and Cr from the vial and balls is a very common problem in MA . Powder B (Figure B) is homogenous and slightly contaminated by Fe and Cr.…”

Section: Summary Of Results Of Alcrfemnmo Alloymentioning

confidence: 99%

Novel Multicomponent Powders from the AlCrFeMnMo Family Synthesized by Mechanical Alloying

et al. 2019

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High‐entropy alloys (HEAs) and multicomponent alloys are known for their promising properties and the almost infinite possibilities of the design of new compositions. The Al–Cr–Fe–Mn–Mo family of HEAs is chosen to promote the formation of a body‐centered cubic (bcc) structure that exhibits high hardness and yield strength. Powder metallurgy is preferred to the liquid route to avoid segregation problems. Two compositions of alloyed powder, equiatomic and optimized, are successfully prepared by mechanical alloying. X‐ray diffraction (XRD) indicates the formation of two major bcc phases: bcc#1 (a1 = 3.13–3.14 Å) and bcc#2 (a2 = 2.87–2.94 Å). Energy transferred during milling depends greatly on the milling device and process conditions. Scanning electron microscopy–energy‐dispersive X‐ray spectroscopy (SEM–EDX) images reveal that high‐energy shocks of balls enable to elaborate homogeneous powder with controlled Fe contamination coming from the grinding vial and balls, whereas low‐energy shocks enable to produce powder free of contamination by Fe, with heterogeneous particles. Finally, the milling process is optimized to obtain a homogeneous alloyed powder with as little contamination as possible.

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“…TaNbHfZrTi 4 , NbTaVWZr 5 etc.) or face-centered cubic (FCC) (e.g., CoCrCuFeNi 6 , CoCrFeMnNi 7 etc.) solid solutions.…”

Section: Introductionmentioning

confidence: 99%

Influence of Cr Substitution and Temperature on Hierarchical Phase Decomposition in the AlCoFeNi High Entropy Alloy

Chaudhary

Gwalani

Soni

et al. 2018

Sci Rep

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While the AlCoFeNi high entropy alloy exhibits a single ordered B2 phase at high temperature, both the substitution of ferromagnetic Co with antiferromagnetic Cr, and lower annealing temperatures lead to a tendency for this system to decompose into a two-phase mixture of ordered B2 and disordered BCC solid solution. The length scale of this decomposition is determined by the combination of composition and annealing temperature, as demonstrated in this investigation by comparing and contrasting AlCoFeNi with the AlCo0.5Cr0.5FeNi alloy. The resulting phase stability has been rationalized based on solution thermodynamic predictions. Additionally, it is shown that replacement of Co by Cr in the AlCoFeNi alloy resulted in a substantial reduction in saturation magnetization and increase in coercivity. The microhardness is also strongly influenced by the composition and the length scale of B2 + BCC decomposition in these high entropy alloys.

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Phase Stability of a Mechanically Alloyed CoCrCuFeNi High Entropy Alloy

Cited by 49 publications

References 38 publications

Mechanical properties of CrFeCoNiCu_x (0 ≤ x ≤ 0.3) HEAs from first-principles calculations

Mechanical properties of CrFeCoNiCu_x (0 ≤ x ≤ 0.3) HEAs from first-principles calculations

Novel Multicomponent Powders from the AlCrFeMnMo Family Synthesized by Mechanical Alloying

Influence of Cr Substitution and Temperature on Hierarchical Phase Decomposition in the AlCoFeNi High Entropy Alloy

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Phase Stability of a Mechanically Alloyed CoCrCuFeNi High Entropy Alloy

Cited by 49 publications

References 38 publications

Mechanical properties of CrFeCoNiCux (0 ≤ x ≤ 0.3) HEAs from first-principles calculations

Mechanical properties of CrFeCoNiCux (0 ≤ x ≤ 0.3) HEAs from first-principles calculations

Novel Multicomponent Powders from the AlCrFeMnMo Family Synthesized by Mechanical Alloying

Influence of Cr Substitution and Temperature on Hierarchical Phase Decomposition in the AlCoFeNi High Entropy Alloy

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Mechanical properties of CrFeCoNiCu_x (0 ≤ x ≤ 0.3) HEAs from first-principles calculations

Mechanical properties of CrFeCoNiCu_x (0 ≤ x ≤ 0.3) HEAs from first-principles calculations