Regularities of Martensitic Transformations in New Medium-Entropy Single Crystals of CoNiAlFe Alloys

Abstract:

This paper deals with the martensitic transformation and functional properties in the quenched single crystals of the Co₃₅Ni₃₅Al₂₈Fe₂ medium-entropy alloy, oriented along the [001]_B2-direction. The microstructure and chemical composition of the single crystals have been studied in detail using transmission and scanning electron microscopy. The {111}_L10 martensite twins up to 10-20 nm width and γ/γ′-phase precipitations larger than 100 μm are detected. The thermoelastic B2-L1₀ martensitic transformation upon stress-free cooling/heating in single crystals of Co₃₅Ni₃₅Al₂₈Fe₂ alloy is characterized by the accumulation of elastic energy, which is the driving force of the reverse martensitic transformation, and the low dissipation energy. The reverse transformation starts at lower temperatures than the forward transformation M_s>A_s. The regularities of the stress-induced B2-L1₀ martensitic transformation change due to an increase in the contribution of the dissipated energy and M_s^σ<A_s^σ. There is shape memory effect with the reversible strain (3.2±0.3)% and high temperature superelasticity with the reversible strain (3.3±0.3)% in the temperature range from 323 K to ≥548 K in the [001]_B2-oriented single crystals. These crystals withstand stress up to 1200 MPa in compression without destruction.

• Periodical: Key Engineering Materials (Volume 985)
• Pages: 9-15
• DOI: https://doi.org/10.4028/p-Xx97MZ
• Online since: August 2024
• Authors: Anna Sergeevna Eftifeeva*, Ilya Fatkullin, Anton Tagiltsev, E.Yu. Panchenko, Sergey G. Anikeev, Yuriy Chumlyakov
• Keywords: Martensitic Transformation, Secondary Phase, Shape Memory Effect, Single Crystals, Superelasticity

References

[1] Y. Zhou, D. Zhou, X. Jin, L. Zhang, X. Du, B. Li, Design of non-equiatomic medium-entropy alloys, Sci. Rep. 8 (2018) 1236

DOI: 10.1038/s41598-018-19449-0

[2] W. Jiang, Y. Zhu, Y. Zhao, Mechanical Properties and deformation mechanisms of heterostructured high-entropy and medium-entropy alloys: A review, Front. Mater. 2 (2022) 792359.

DOI: 10.3389/fmats.2021.792359

[3] F. Luo, J. Chen, K. Chen, K. Oikawa, K. Ishida, Influence of Fe on martensitic and magnetic transformation of p based Co-Ni-Al all, J. Funct. Mater. 36(12) (2005) 1862–1865.

[4] J. Ju, F. Xue, L. Sun, Effect of rapid solidification on the microstructure and magnetic-field induced strain of Co1.36Ni1.21AlFe0.12, Mater. Manuf. Process. 30(5) (2015) 637–643.

[5] H. Chen, J. Ju, L. Shuai, H. Liu, C. Yan, Z. Liu, Structure and martensitic transformation in rapidly solidified CoNiAlFe alloy, Metals 7(11) (2017) 473.

DOI: 10.3390/met7110473

[6] J. Dadda, H.J. Maier, D. Niklasch, I. Karaman, H.E. Karaca, Y.I. Chumlyakov, Pseudoelasticity and cyclic stability in Co49Ni21Ga30 Shape-memory alloy single crystals at ambient temperature, Metall. Mater. Trans. A. 39 (2008) 2026–2039.

DOI: 10.1007/s11661-008-9543-0

[7] Y. Tanaka, K. Oikawa, Y. Sutou, T. Omori, R. Kainuma, K. Ishida, Martensitic transition and superelasticity of Co–Ni–Al ferromagnetic shape memory alloys with β+γ two-phase structure, Mater. Sci. Eng. A. 438–440 (2006) 1054–1060.

DOI: 10.1016/j.msea.2006.05.021

[8] A. Eftifeeva, E. Panchenko, Yu. Chumlyakov, E. Yanushonite, G. Gerstein, H.J. Maier, Compressive response of high-strength [001]-oriented single crystals of a Co35Ni35Al30 shape memory alloy, J. Alloys Compd. 787 (2019) 963–971.

DOI: 10.1016/j.jallcom.2019.02.185

[9] Y. Zhou, P. Nash, S. Bessa, G. Ferrigatto, B. Madureira, A. Magalhães, A. Oliveira, G. Pereira, L. Ribeiro, L. Santos, A. Silva, J. Silva, A. Silva, J. Souza, Y. Torres, R. Silva, B. Cunha, Phase equilibria in the Al-Co-Ni alloy system, J. Phase Equilib. Diffus. 38 (2017) 630–645.

DOI: 10.1007/s11669-017-0586-z

[10] E. Dogan, I. Karaman, Y.I. Chumlyakov, Z.P. Luo, Microstructure and martensitic transformation characteristics of CoNiGa high temperature shape memory alloy, Acta Mater. 59(3) (2011) 1168–1183.

DOI: 10.1016/j.actamat.2010.10.050

[11] F. Zhou, Y. Zhou, J. Wang, J. Liang, H. Gao, M. Kang, Enlightening from γ, γ' and β phase transformations in Al-Co-Ni alloy system: A review, Curr. Opin. Solid State Mater. Sci. 23(6) (2019) 100784.

DOI: 10.1016/j.cossms.2019.100784

[12] C. Wang, F. Zhou, Y. Zhou, M. Wang, J. Liang, J. Wang, B. Gan, Investigations of strength and ductility in Ni-xCo-10Al alloys via discontinuous precipitation, Mater. Charact. 163 (2020) 110318.

DOI: 10.1016/j.matchar.2020.110318

[13] J. Ortinh, A. Planes, Thermodynamic analysis of thermal measurements in thermoelastic martensitic transformations, Acta Metall. 36(8) (1988) 1873–1889.

DOI: 10.1016/0001-6160(88)90291-x

[14] D.L. Beke, L. Darуczi, T.Y. Elrasasi, Determination of elastic and dissipative energy contributions to martensitic phase transformation in shape memory alloys, in: F.M.B. Fernandes (Ed.), Shape Memory Alloys – Processing, Characterization and Applications, IntechOpen, UK, 2013, p.1–30.

DOI: 10.5772/51511

[15] E.Y. Panchenko, Y.I. Chumlyakov, V.A. Kirillov, A.S. Kanafieva, H. Maier, Characteristic features of development of thermoelastic transformations in aged single crystals of a CoNiAl ferromagnetic alloy, Russ. Phys. J. 54(6) (2011) 721–728.

DOI: 10.1007/s11182-011-9675-3

[16] К. Otsuka, C.M. Wayman, Shape memory material, Cambridge University PRESS, 1998.

[17] J. Dadda, H.J. Maier, I. Karaman, Y.I. Chumlyakov, Cyclic deformation and austenite stabilization in Co35Ni35Al30 single crystalline high-temperature shape memory alloys, Acta Mater. 57 (2009) 6123–6134.

DOI: 10.1016/j.actamat.2009.08.038