Microstructural Transition of (CuFeMnNi)1−xCrx (x = 0-0.25) High-Entropy Alloys

Chen, X.; Zhai, Sicheng; Gao, Di; Liu, Y.; Yin, Fei

doi:10.1007/s11665-019-04171-3

Cited by 10 publications

(2 citation statements)

References 21 publications

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“…The literature has made evidence of changes in phase fraction with the kinetics of solidification, annealing, fabrication method, and so on. [ 48,49 ] Also, this model cannot distinguish between ordered and disordered phases, such as the most prominent B2 and BCC case, [ 50 ] and treats both phases equally. Such classification is outside the scope of this work, and further investigation is needed to take this into account.…”

Section: Discussionmentioning

confidence: 99%

Quantitative Phase Prediction in Dual‐Phase High‐Entropy Alloys: Computationally Aided Parametric Approach

Negi

Sourav

Heilmaier

et al. 2021

Physica Status Solidi (b)

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Dual‐phase high‐entropy alloys (HEAs) have shown remarkable mechanical properties. However, type and fraction of the secondary phase play a significant role in determining their physical and mechanical properties. CALPHAD is generally used to predict the phases and their fraction in HEAs. Herein, a parameter‐based empirical model is used to predict the phase fraction in dual‐phase HEAs. Valence electron concentration and various measures of atomic size mismatch are utilized for that purpose. A new parameter, namely, critical mismatch factor (δnormalC), is proposed in this work. Experimental verification is done on a series of AlxCoCrFeNi (x = 0.3, 0.5, 0.7) alloys synthesized by vacuum arc melting. Phase fraction is determined by X‐ray diffraction and electron backscatter diffraction analysis. The experimentally determined volume fraction of BCC phase in Al0.3, Al0.5, and Al0.7 is 0%, 6%, and 28–37%, respectively, which agrees closely with the predicted values proving the chosen approach useful.

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Section: Discussionmentioning

confidence: 99%

Quantitative Phase Prediction in Dual‐Phase High‐Entropy Alloys: Computationally Aided Parametric Approach

Negi

Sourav

Heilmaier

et al. 2021

Physica Status Solidi (b)

View full text Add to dashboard Cite

show abstract

“…3a, all samples at different carbonisation temperatures have the same diffraction peaks, including the (111), ( 200) and ( 220) planes, corresponding to two classical FCCs (Cu-FCC1 and HEA-FCC2). [26][27][28][29][30][31] It is notable that FCC1 is identified in the diffraction pattern of Cu metal (PDF#04-0836) because Cu is easily reduced during high-temperature pyrolysis, thereby causing alloy phase separation. A higher peak strength can be obtained at a higher temperature, owing to the highly crystallised HEAs as a result of high carbonisation temperature.…”

Section: Dalton Transactions Papermentioning

confidence: 99%