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Formation of a hexagonal closed-packed phase in Al0.5CoCrFeNi high entropy alloy

Published online by Cambridge University Press:  09 October 2017

J. Wang [Opens in a new window] ,
Y. Zhang ,
S.Z. Niu ,
W.Y. Wang ,
H.C. Kou ,
J.S. Li ,
S.Q. Wang  and
E. Beaugnon
J. Wang
Affiliation:
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an Shaanxi 710072, China
Y. Zhang
Affiliation:
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an Shaanxi 710072, China
S.Z. Niu
Affiliation:
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an Shaanxi 710072, China
W.Y. Wang
Affiliation:
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an Shaanxi 710072, China
H.C. Kou
Affiliation:
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an Shaanxi 710072, China
J.S. Li
Affiliation:
State Key Laboratory of Solidification Processing, Northwestern Polytechnical University, Xi'an Shaanxi 710072, China
S.Q. Wang
Affiliation:
School of Materials Science and Engineering, Xi'an Shiyou University, 18 Dianzi Road, Xi'an Shaanxi 710065, China
E. Beaugnon
Affiliation:
University Grenoble Alps, LNCMI, F-38000 Grenoble, France CNRS, LNCMI, F-38000 Grenoble, France
Corresponding
E-mail address:
nwpuwj@nwpu.edu.cn
ljsh@nwpu.edu.cn
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Abstract

We report that a hexagonal closed-packed (HCP) phase with high cobalt content precipitates in Al0.5CoCrFeNi high entropy alloy (HEA) after 650 °C/8 h heat-treatment. The precipitate with the shape of plate is completely located at the interdendritic region. Results of electron diffraction and high resolution transmission electron microscopy show that the HCP phase was transformed from the body-centered cubic phase through a simple shear and the two phase obey an orientation relationship. The thermodynamic stability of Al0.5CoCrFeNi HEA should be carefully reevaluated, especially at the vulnerable temperature.

Type
Research Letters
Information
MRS Communications , Volume 7 , Issue 4 , December 2017 , pp. 879 - 884
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Copyright
Copyright © Materials Research Society 2017 

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References

1. Cantor, B., Chang, I.T.H., Knight, P., and Vincent, A.J.B.: Microstructural development in equiatomic multicomponent alloys. Mater. Sci. Eng. A 375, 213 (2004).CrossRefGoogle Scholar
2. Zhang, Y., Zuo, T.T., Tang, Z., Gao, M.C., Dahmen, K.A., Liaw, P.K., and Lu, Z.P.: Microstructures and properties of high-entropy alloys. Prog. Mater. Sci. 61, 1 (2014).CrossRefGoogle Scholar
3. Murty, B.S., Yeh, J.W., and Ranganathan, S.: Chapter 2-High-Entropy Alloys: Basic Concepts. High-Entropy Alloys (Elsevier Inc., Amsterdam, 2014).Google Scholar
4. Lin, C.M. and Tsai, H.L.: Evolution of microstructure, hardness, and corrosion properties of high-entropy Al0.5CoCrFeNi alloy. Intermetallics, 19, 288 (2011).CrossRefGoogle Scholar
5. Lu, Y.P., Gao, X.Z., Jiang, L., Chen, Z.N., Wang, T., Jie, J.C., and Li, T.J.: Directly cast bulk eutectic and near-eutectic high entropy alloys with balanced strength and ductility in a wide temperature range. Acta Mater.. 124, 143 (2017).CrossRefGoogle Scholar
6. Kao, Y.F., Chen, T.J., Chen, S.K., and Yeh, J.W.: Microstructure and mechanical property of as-cast, -homogenized, and -deformed AlxCoCrFeNi (0≤ x≤ 2) high-entropy alloys. J. Alloys Compd. 488, 57 (2009).CrossRefGoogle Scholar
7. Miracle, D.B.: Critical Assessment 14: High entropy alloys and their development as structural materials. J. Mater. Sci. Technol. 31, 1142 (2015).CrossRefGoogle Scholar
8. Yeh, J.W., Chen, S.K., Lin, S.J., Gan, J.Y., Chin, T.S., Shun, T.T., Tsau, C.H., and Chang, S.Y.: Microstructural control and properties optimization of high-entropy alloys. Adv. Eng. Mater. 6, 299 (2004).CrossRefGoogle Scholar
9. Pickering, E.J., Muñoz-Moreno, R., Stone, H.J., and Jones, N.G.: Precipitation in the equiatomic high-entropy alloy CrMnFeCoNi. Scr. Mater. 113, 106 (2016).CrossRefGoogle Scholar
10. Choudhuri, D., Alam, T., Borkar, T., Gwalani, B., Mantri, A.S., Srinivasan, S.G., Gibson, M.A., and Banerjee, R.: Formation of a Huesler-like L21 phase in a CoCrCuFeNiAlTi high-entropy alloy. Scr. Mater. 100, 36–39 (2015).CrossRefGoogle Scholar
11. Otto, F., Dlouhý, A., Pradeep, K. G., Kubenov, M., Raabe, D., Eggeler, G., and George, E.P.: Decomposition of the single-phase high-entropy alloy CrMnFeCoNi after prolonged anneals at intermediate temperatures. Acta Mater.. 112, 40 (2016).CrossRefGoogle Scholar
12. He, F., Wang, Z., Wu, Q., Li, J., Wang, J., and Liu, C.T.: Phase separation of metastable CoCrFeNi high entropy alloy at intermediate temperatures. Scr. Mater. 126, 15 (2017).CrossRefGoogle Scholar
13. Rao, J.C., Diao, H.Y., Ocelik, V., Vainchtein, D., Zhang, C., Kuo, C., Tang, Z., Guo, W., Poplawsky, J.D., Zhou, Y., Liaw, P.K., and De Hosson, J.T.M.: Secondary phases in AlxCoCrFeNi high-entropy alloys: an in-situ TEM heating study and thermodynamic appraisal. Acta Mater.. 131, 206 (2017).CrossRefGoogle Scholar
14. Miracle, D.B. and Senkov, O.N.: A critical review of high entropy alloys and related concepts. Acta Mater. 122, 448 (2017).CrossRefGoogle Scholar
15. An, Z.N., Jia, H.L., Wu, Y.Y., Rack, P.D., Patchen, A.D., Liu, Y., Ren, Y., Li, N., and Liaw, P.K.: Solid-Solution CrCoCuFeNi High-Entropy Alloy Thin Films Synthesized by Sputter Deposition. Mater. Res. Lett. 3, 203 (2015).CrossRefGoogle Scholar
16. Ren, B., Liu, Z.X., Li, D.M., Shi, L., Cai, B., and Wang, M.X.: Corrigendum to “Effect of elemental interaction on microstructure of CuCrFeNiMn high-entropy alloy system”. J. Alloys Compd. 503, 538 (2010).CrossRefGoogle Scholar
17. Lu, Y.P., Dong, Y., Guo, S., Jiang, L., Kang, H.J., Wang, T.M., and Li, T.: A promising new class of high-temperature alloys: eutectic high-entropy alloys. Sci. Rep. 4, 6200 (2014).CrossRefGoogle ScholarPubMed
18. Wang, W.R., Wang, W.L., Wang, S.C., and Yeh, J.W.: Effects of Al addition on the microstructure and mechanical property of AlxCoCrFeNi high-entropy alloys. Intermetallics 26, 44 (2012).CrossRefGoogle Scholar
19. Chou, H.P., Chang, Y.S., Chen, S.K., and Yeh, J.W.: Microstructure, thermophysical and electrical properties in AlxCoCrFeNi (0≤ x≤ 2) high-entropy alloys. Mater. Sci. Eng. B 163, 184 (2009).CrossRefGoogle Scholar
20. Wang, J., Niu, S.Z., Guo, T., Kou, H.C., and Li, J.S.: The FCC to BCC phase transformation kinetics in an Al0.5CoCrFeNi high entropy alloy. J. Alloys Compd. 710, 144 (2017).CrossRefGoogle Scholar
21. Niu, S.Z., Kou, H.C., Guo, T., Zhang, Y., Wang, J., and Li, J.S.: Strengthening of nanoprecipitations in an annealed Al0.5CoCrFeNi high entropy alloy Mater . Sci. Eng. A 671, 82 (2016).CrossRefGoogle Scholar
22. Wang, W., Wang, W., and Yeh, J.W.: Phases, microstructure and mechanical properties of AlxCoCrFeNi high-entropy alloys at elevated temperatures. J. Alloys Compd. 589, 143 (2014).CrossRefGoogle Scholar
23. Zhang, C., Wu, G.F., and Dai, P.Q.: Phase transformation and aging behavior of Al0.5CoCrFeNiSi0.2 high-entropy alloy. JMEPEG. 24, 1918 (2015).CrossRefGoogle Scholar
24. Zhang, F., Zhang, C., Chen, S.L., Zhu, J., Cao, W.S., and Kattner, U.R.: An understanding of high entropy alloys from phase diagram calculations. Calphad 45, 1 (2014).CrossRefGoogle Scholar
25. Li, Z., Mao, H.H., Korzhavyi, P.A., and Selleby, M.N.: Thermodynamic re-assessment of the Co-Cr system supported by first-principles calculations. Calphad 52, 1 (2016).CrossRefGoogle Scholar
26. Welk, B.A., Williams, R., Viswanathan, G.B., Gibson, M.A., Liaw, P.K., and Fraser, H.L.: Nature of the interfaces between the constituent phases in the high entropy alloy CoCrCuFeNiAl. Ultramicroscopy 134, 193 (2013).CrossRefGoogle ScholarPubMed
27. Fan, Q.C., Li, B.S., and Zhang, Y.: The microstructure and properties of (FeCrNiCo)AlxCuy high-entropy alloys and their TiC-reinforced composites. Mater. Sci. Eng. A 598, 244 (2014).CrossRefGoogle Scholar
28. Burgers, W.G.: On the process of transition of the cubic-body-centered modification into the hexagonal-close-packed modification of zirconium. Physica 1, 561 (1934).CrossRefGoogle Scholar
29. Ojha, A. and Sehitoglu, H.: Critical stress for the bcc-hcp martensite nucleation in Ti-6.25at.% Ta and Ti-6.25at.%Nb alloys. Comput. Mater. Sci. 111, 157 (2016).CrossRefGoogle Scholar
30. Yoshinaga, H., Morozumi, S., Portevin, A. and Chatelier, L.: A Portevin-Le Chatelier effect expected from solute atmosphere dragging. Mag. A. 23, 1351 (1971).Google Scholar

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