Structure and Properties of Melt-Quenched Al₄CoCrCuFeNi High-Entropy Alloy

Abstract:

The structure and mechanical properties of a multicomponent high-entropy Al₄CoCrCuFeNi alloy in the as-cast and melt-quenched states were investigated. The alloy composition was analyzed based on the literature criteria for predicting the phase formation in high-entropy alloys, which considered the entropy and enthalpy of mixing, valence electron concentration as well as the atomic size difference of the components. The alloy films were synthesized by quenching from the melt using a splat-quenching technique. The cooling rate of the films was estimated to be ~ 10⁶ K/s based on the film thickness. The X-ray diffraction analysis revealed that both as-cast and melt-quenched Al₄CoCrCuFeNi alloy samples had an ordered B2 phase in their structure. The microhardness of the as-cast alloy was 6500 MPa, while the microhardness of the melt-quenched film was significantly higher and reached 9400 MPa.

• Periodical: Defect and Diffusion Forum (Volume 431)
• Pages: 47-54
• DOI: https://doi.org/10.4028/p-4GvJbC
• Online since: February 2024
• Authors: Oleksandr I. Kushnerov*, V.F. Bashev, Serhii I. Ryabtsev
• Keywords: High Entropy Alloy, Microhardness, Phase Composition, Splat-Quenching, Structure

References

[1] T.S. Srivatsan, M. Gupta, High Entropy Alloys. Innovations, advances, and applications, CRC Press, Boca Raton, 2020.

[2] H. Xiang, F.-Z. Dai, Y. Zhou, High- Entropy Materials. From Basics to Applications, 1st ed., WILEY- VCH GmbH, Weinheim, Germany, 2023.

[3] J. Brechtl, P.K. Liaw, High-Entropy Materials: Theory, Experiments, and Applications, Springer International Publishing, Cham, 2021.

[4] D.B. Miracle, O.N. Senkov, A critical review of high entropy alloys and related concepts, Acta Mater. 122 (2017) 448–511.

DOI: 10.1016/j.actamat.2016.08.081

[5] M.C. Gao, J.-W. Yeh, P.K. Liaw, et al., High-Entropy Alloys. Fundamentals and Applications, Springer International Publishing, Cham, 2016.

[6] T.A. Kosorukova, G. Gerstein, V. V. Odnosum, et al., Microstructure Formation in Cast TiZrHfCoNiCu and CoNiCuAlGaIn High Entropy Shape Memory Alloys: A Comparison, Materials (Basel). 12 (2019) 4227.

DOI: 10.3390/ma12244227

[7] O.I. Kushnerov, S.I. Ryabtsev, V.F. Bashev, Metastable states and physical properties of Co-Cr-Fe-Mn-Ni high-entropy alloy thin films, Mol. Cryst. Liq. Cryst. 750 (2023) 135–143.

DOI: 10.1080/15421406.2022.2073043

[8] O.I. Kushnerov, V.F. Bashev, S.I. Ryabtsev, Structure and Properties of Nanostructured Metallic Glass of the Fe–B–Co–Nb–Ni–Si High-Entropy Alloy System, in: Springer Proc. Phys., Springer Science and Business Media Deutschland GmbH, 2021: p.557–567.

DOI: 10.1007/978-3-030-51905-6_38

[9] O.I. Kushnerov, V.F. Bashev, Structure and Physical Properties of Cast and Splat-Quenched CoCr0.8Cu0.64FeNi High Entropy Alloy, East Eur. J. Phys. (2021) 43–48.

DOI: 10.26565/2312-4334-2021-3-06

[10] V.А. Polonskyy, V.F. Bashev, O.I. Kushnerov, Structure and corrosion-electrochemical properties of rapidly quenched Fe5CrCuNiMnSi and Fe5CoCuNiMnSi high entropy alloys, J. Chem. Technol. 30 (2022) 88–95.

DOI: 10.15421/332123

[11] C.-J. Tong, Y.-L. Chen, J.-W. Yeh, et al., Microstructure characterization of AlxCoCrCuFeNi high-entropy alloy system with multiprincipal elements, Metall. Mater.Trans.A. 36 (2005) 881–893.

DOI: 10.1007/s11661-005-0283-0

[12] Y. Plevachuk, J. Brillo, A. Yakymovych, AlCoCrCuFeNi-Based High-Entropy Alloys: Correlation Between Molar Density and Enthalpy of Mixing in the Liquid State, Metall. Mater. Trans. A Phys. Metall. Mater. Sci. 49 (2018) 6544–6552.

DOI: 10.1007/s11661-018-4925-4

[13] M. Dufanets, V. Sklyarchuk, Y. Plevachuk, et al., The Structural and Thermodynamic Analysis of Phase Formation Processes in Equiatomic AlCoCuFeNiCr High-Entropy Alloys, J. Mater. Eng. Perform. 29 (2020) 7321–7327.

DOI: 10.1007/s11665-020-05250-6

[14] N. Stepanov, D.G. Shaysultanov, G.A. Salishchev, et al., Mechanical Behavior and Microstructure Evolution during Superplastic Deformation of the Fine-Grained AlCoCrCuFeNi High Entropy Alloy, Mater. Sci. Forum. 838–839 (2016) 302–307.

DOI: 10.4028/www.scientific.net/msf.838-839.302

[15] M.A. Hemphill, T. Yuan, G.Y. Wang, et al., Fatigue behavior of Al0.5CoCrCuFeNi high entropy alloys, Acta Mater. 60 (2012) 5723–5734.

DOI: 10.1016/j.actamat.2012.06.046

[16] Z.F. Wu, X.D. Wang, Q.P. Cao, et al., Microstructure characterization of AlxCo1Cr1Cu1Fe1Ni1 (x = 0 and 2.5) high-entropy alloy films, J. Alloys Compd. 609 (2014) 137–142.

DOI: 10.1016/j.jallcom.2014.04.094

[17] A. Munitz, M.J. Kaufman, M. Nahmany, et al., Microstructure and mechanical properties of heat treated Al1.25CoCrCuFeNi high entropy alloys, Mater. Sci. Eng. A. 714 (2018) 146–159.

DOI: 10.1016/j.msea.2017.12.084

[18] Y.Y. Liu, Z. Chen, J.C. Shi, et al., The effect of Al content on microstructures and comprehensive properties in AlxCoCrCuFeNi high entropy alloys, Vacuum. 161 (2019) 143–149.

DOI: 10.1016/j.vacuum.2018.12.009

[19] H. Ziaei, B. Sadeghi, Z. Marfavi, et al., Phase evolution in mechanical alloying and spark plasma sintering of AlxCoCrCuFeNi HEAs, Mater. Sci. Technol. 36 (2020) 604–614.

DOI: 10.1080/02670836.2020.1722912

[20] A. Altomare, N. Corriero, C. Cuocci, et al., Main features of QUALX2.0 software for qualitative phase analysis, Powder Diffr. 32 (2017) S129–S134.

DOI: 10.1017/s0885715617000240

[21] S. Guo, C.T. Liu, Phase stability in high entropy alloys: Formation of solid-solution phase or amorphous phase, Prog. Nat. Sci. Mater. Int. 21 (2011) 433–446.

DOI: 10.1016/s1002-0071(12)60080-x

[22] C. Zhang, F. Zhang, S. Chen, et al., Computational Thermodynamics Aided High-Entropy Alloy Design, JOM. 64 (2012) 839–845.

DOI: 10.1007/s11837-012-0365-6

[23] Y. Zhang, Y.J.J. Zhou, J.P.P. Lin, et al., Solid-Solution Phase Formation Rules for Multi-component Alloys, Adv. Eng. Mater. 10 (2008) 534–538.

DOI: 10.1002/adem.200700240

[24] S. Guo, C. Ng, J. Lu, C.T. Liu, Effect of valence electron concentration on stability of FCC or BCC phase in high entropy alloys, J. Appl. Phys. 109 (2011) 103505.

DOI: 10.1063/1.3587228

[25] N.A. Krapivka, S.A. Firstov, M. V Karpets, et al., Features of phase and structure formation in high-entropy alloys of the AlCrFeCoNiCu x system (x = 0, 0.5, 1.0, 2.0, 3.0), Phys. Met. Metallogr. 116 (2015) 467–474.

DOI: 10.1134/s0031918x15030084

[26] A. Takeuchi, A. Inoue, Classification of Bulk Metallic Glasses by Atomic Size Difference, Heat of Mixing and Period of Constituent Elements and Its Application to Characterization of the Main Alloying Element, Mater. Trans. 46 (2005) 2817–2829.

DOI: 10.2320/matertrans.46.2817

[27] M.C. Troparevsky, J.R. Morris, P.R.C. Kent, et al., Criteria for Predicting the Formation of Single-Phase High-Entropy Alloys, Phys. Rev. X. 5 (2015) 011041.

DOI: 10.1103/physrevx.5.011041

[28] M.C. Troparevsky, J.R. Morris, M. Daene, et al., Beyond Atomic Sizes and Hume-Rothery Rules: Understanding and Predicting High-Entropy Alloys, JOM. 67 (2015) 2350–2363.

DOI: 10.1007/s11837-015-1594-2

[29] Y.P. Wang, B.S. Li, H.Z. Fu, Solid Solution or Intermetallics in a High-Entropy Alloy, Adv. Eng. Mater. 11 (2009) 641–644.

DOI: 10.1002/adem.200900057