Microstructure and Electrochemical Performances of AlxFeCoNiCr(B) High Entropy Alloys

Abstract:

High entropy alloys are new alloys composed of over five principal elements with each having an atomic percentage in the range of 5%~35%, which break through the concept of traditional alloys design. In this paper, AlxFeCoNiCr (B) high entropy alloys were prepared in an vacuum arc induction melting furnace. The microstructure presents simple solid solution structure, and the fraction of FCC crystal structure decreased with increasing of Al content. Chromium tends to segregate at the inter-dendrite grain boundary. Electrochemical investigations indicated that AlxFeCoNiCr (B) high entropy alloys were more corrosion resistance than 316L stainless steel.

• Periodical: Materials Science Forum (Volumes 745-746)
• Pages: 728-733
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.745-746.728
• Online since: February 2013
• Authors: Sheng Zhu, Wen Bo Du, Xiao Ming Wang, Guo Feng Han
• Keywords: Electro Chemical Behaviors, High Entropy Alloy, Polarization Curve, Stainless Steel (SS)

References

[1] C. Suryanarayana, A. Inoue. BULK METALLIC GLASSES. Taylor and Francis Group, New York, 2011: 2–8.

[2] J.W. Yeh, S.K. Chen, S.H. Lin, et al. Nanostructured High-Entropy Alloys with Multiple Principal Elements: Novel Alloy Design Concepts and Outcomes. ADVANCED ENGINEERING MATERIALS, 2004, 6(5): 299-303.

DOI: 10.1002/adem.200300567

[3] R.A. Swalin. Thermodynamics of Solids, seconded, Wiley, NewYork, (1991).

[4] C.J. Tong, M.R. Chen, S.K. Chen, J.W. Yeh, T.T. Shun, S.J. Lin, et al. Mechanical performance of the AlxCoCrCuFeNi high-entropy alloy system with multiprincipal elements. Metall Mater Trans A, 2005, 36A: 1263-71.

DOI: 10.1007/s11661-005-0218-9

[5] P.K. Huang, J.W. Yeh, T.T. Shun, S.K. Chen. Multi-principal-element alloys with improved oxidation and wear resistance for thermal spray coating. Adv Eng Mater, 2004, 6: 74-8.

DOI: 10.1002/adem.200300507

[6] J.W. Yeh, S.K. Chen, J.Y. Gan, S.J. Lin, T.S. Chin, T.T. Shun, et al. Formation of simple crystalstructure in Cu-Co-Ni-Al-Fe-Ti-V alloys with multiprincipal metallic elements. Metall Mater Trans A, 2004, 35A: 2533-6.

DOI: 10.1007/s11661-006-0234-4

[7] B. Cantor, I.T.H. Chang, P. Knight, A.J.B. Vincent. Microstructural development in equiatomic multicomponent alloys. Material Science and Engineering,A. 2004, 375-377: 213~8.

DOI: 10.1016/j.msea.2003.10.257

[8] M.R. Chen, S.J. Lin, J.W. Yeh, S.K. Chen, Y.S. Huang, C.P. Tu. Microstructure and properties of Al0. 5CoCrCuFeNiTix(x=0-2. 0) high-entropy alloys. Materials Transactions, 2006, 47(5): 139-140.

[9] J.W. Yeh. Recent progress in high-entropy alloys. Ann. Chim, -Sci. Mat. 2006, 31(6): 633-48.

DOI: 10.3166/acsm.31.633-648

[10] J.C. Gao, R. Li. The development of studies in high-entropy alloy. Journal of Functional Materials, 2008, 39(7): 1059-61.

[11] S. Ranganathan. Alloyed pleasures: Multimetallic cocktails, CURRENT SCIENCE, 2003, 85(10): 1404-6.

[12] H.P. Chou, Y.S. Chang, S.K. Chen, J.W. Yeh. Microstructure, thermophysical and electrical properties in AlxCoCrFeNi(0≤x≤2) high-entropy alloys. Materials Science and Engineering B, 2009, 163: 184-9.

DOI: 10.1016/j.mseb.2009.05.024

[13] Y.F. Kao, T.D. Lee, S.K. Chen, Y.S. Chang. Electrochemical passive properties of AlxCoFeNi(x=0, 0. 25, 0. 5, 1. 00) alloys in sulfuric acids. Corrosions Science, 2010, 52: 1026-34.

[14] C.M. Lin, H.L. Tsai. Evolution of microstructure, hardness, and corrosion properties of high-entropy Al0. 5CoCrFeNi alloy. Intermetallics, 2011, 19: 288-94.

DOI: 10.1016/j.intermet.2010.10.008

[15] Y.Y. Chen, T. Duval, U.D. Hung, J.W. Yeh, H.C. Shih. Microstructure and electrochemical properties of high entropy alloys—a comparison with type-304 stainless steel. Corrosion Science, 2005, 47: 2257-79.

DOI: 10.1016/j.corsci.2004.11.008

[16] Y.Y. Chen, T. Duval, U.D. Hong, J.W. Yeh, H.C. Shih, L.H. Wang, J.C. Oung. Corrosion properties of a novel bulk Cu0. 5NiAlCoCrFeSi glassy alloy in 288℃ high-purity water. Materials Letters, 2007, 61: 2692-6.

DOI: 10.1016/j.matlet.2006.03.158

[17] C.P. Lee, Y.Y. Chen, C.Y. Hsu, J.W. Yeh, H.C. Shih, Enhancing pitting corosion resistance of AlxCrFeMnNi high-entropy alloys by anodic treatment in sulfuric acid. Thin Solid Films, 2008, 517: 1301-5.

DOI: 10.1016/j.tsf.2008.06.014

[18] C.P. Lee, C.C. Chang, Y.Y. Chen, J.W. Yeh, H.C. Shih. Effect of the aluminum content of AlxCrFeMnNi high-entropy alloys on the corrosion behavior in aqueous environments. Corrosion Science, 2008, 50: 2053-60.

DOI: 10.1016/j.corsci.2008.04.011

[19] Y.L. Chou, J.W. Yeh, H.C. Shih. The effect of molybdenum on the corrosion behaviour of the high-entropy alloys Co1. 5CrFeNi1. 5Ti0. 5Mox in aqueous environments. Corrosion Science, 2010, 52: 2571-81.

DOI: 10.1016/j.corsci.2010.04.004

[20] Y.J. Hsu, W.C. Chiang, J.K. Wu. Corrosion behavior of FeCoNiCrCux high-entropy alloys in 3. 5% sodium chloride solution. Materials Chemistry and Physics, 2005, 92: 112-7.

DOI: 10.1016/j.matchemphys.2005.01.001

[21] J.W. Yeh, S.K. Chen, J.Y. Gan, S.J. Lin, T.S. Chin, T.T. Shun, et al. Formational of Simple Crystal Structures in Cu-Co-Ni-Cr-Al-Fe-Ti-V Alloys with Multiprincipal Metallic Elements. METALLURGICAL AND MATERIALS TRANSACTIONS A, 2004, 35A: 2533-6.

DOI: 10.1007/s11661-006-0234-4

[22] Y.F. Kao, T.J. Chen, S.K. Chen, J.W. Yeh. Microstructure and mechanical property of as-cast, -homogenized, and –deformed AlxCoCrFeNi(0≤x≤2) high-entropy alloys. Journal of Alloys and Compounds, 2009, 488: 57-64.

DOI: 10.1016/j.jallcom.2009.08.090