Microstructure and Mechanical Properties of Equiatomic and Non-Equiatomic TiMoTaNbV High Entropy Alloys Prepared Using Vacuum Arc Remelting

• Autorzy: Lee Seongi , Lee Kwangmin

Identyfikatory

DOI

10.24425/amm.2020.133691

• Języki publikacji: EN

Abstrakty

EN

This study investigates the microstructures and the mechanical properties of equiatomic Ti₂₀ Mo₂₀ Ta₂₀ Nb₂₀ V₂₀ and non-equiatomic Ti₄₀ Mo₁₅ Ta₁₅ Nb₁₅ V₁₅ and Ti₆₀ Mo₁₀ Ta₁₀ Nb₁₀ V₁₀ HEAs using X-ray diffraction (XRD) analysis, field emission scanning electron microscope (FE-SEM), and micro-Vickers hardness test. The specimens were fabricated using the vacuum arc remelting (VAR) process and homogenized at a temperature of 1300°C for 4 h in a vacuum atmosphere. The determined thermodynamic parameters, Ω ≥ 1.1, δ ≤ 6.6%, and VEC < 6.87, suggested that the HEAs consisted of BCC solid solutions. XRD patterns of all the HEAs displayed single BCC phases. The difference in the solidification rate led to the micro-segregation associated with the elements Ta and Mo enriched in the dendrite arms and the elements V and Ti in the inter-dendritic regions. The HEA specimens showed a decrease in hardness with higher concentration of Ti element because the intrinsic hardness of Ti is lower as compared to the intrinsic hardness of Nb and Mo.

Słowa kluczowe

EN

high entropy alloy; TiMoTaNbV; vacuum arc remelting; BCC phase; micro-segregation

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2020
• Tom: Vol. 65, iss. 4
• Strony: 1311--1315
• Opis fizyczny: Bibliogr. 17 poz., rys., tab., wzory

Twórcy

autor

Lee Seongi

• School of Materials Science & Engineering, Chonnam National University, Gwangju 61186, Republic of Korea

autor

Lee Kwangmin

• School of Materials Science & Engineering, Chonnam National University, Gwangju 61186, Republic of Korea

Bibliografia

• [1] B. Cantor, I. T. H. Chang, P. Knight, A. J. B. Vincent, Mater. Sci. Eng. A. 375-377, 213 (2004).
• [2] J. W. Yeh, S. K. Chen, S. J. Lin, J. Y. Gan, T. S. Chin, T. T. Shun, C. H. Tsau, S. Y. Chang, Adv. Eng. Mater. 6, 299 (2004).
• [3] G. Mani, Biomater. 28, 1689 (2007).
• [4] S. Sheikh, S. Shafeie, Q. Hu, J. Ahlstrom, C. Persson, J. Veselý, J. Zýka, U. Klement, S. Guo, J. Appl. Phys. 120, 164902 (2016).
• [5] C. C. Juan, K. K. Tseng, W. L. Hsu, M. H. Tsai, C. W. Tsai, C. M. Lin, S. K. Chen, S. J. Lin, J. W. Yeh, Mater. Lett. 175, 284 (2016)
• [6] V. Soni, O. N. Senkov, B. Gwalani, D. B. Miracle, R. Banerjee, Sci. Rep. 8, 8816 (2018)
• [7] O. N Senkov, G. B Wilks, D. B. Miracle, C. P. Chuang, P. K. Liaw, Intermetallics 18, 1758 (2010).
• [8] H. W. Yao, J. W. Qiao, J. A. Hawk, H. F. Zhou, M. W. Chen, M. C. Gao, J. Alloys. Compd. 696, 1139 (2017).
• [9] Y. Zhnag, Z. P. Lu, S. G. Ma, P. K. Liaw, Z. Tang, Y. Q. Cheng, M. C. Gao, MRS Commun. 4, 57 (2014).
• [10] Y. Zahng, Y. J. Zhou, J. P. Lin, G. L. Chen, P. K. Liaw, Adv. Eng. Mater. 10, 534 (2008).
• [11] S. Guo, C. Ng, J. Lu, C.T. Liu, J. Appl. Phys. 109, 103505 (2011).
• [12] L. Vegard, Z. Phys. A. At. Nucl. 5, 17 (1921).
• [13] C. C. Juan, M. H. Tsai, C. W. Tsai, C. M. Lin, W. R. Wang, C. C. Yang, S. K. Chen, S. J. Lin, J. W. Yeh, Intermetallics 62, 76 (2015).
• [14] H. W. Yao, J. W. Qiao, M. C. Gao, J. A. Hawk, S. G. Ma, H. F. Zhou, Entropy 18, 189 (2016).
• [15] O. N. Senkov, G. B. Wilks, J. M. Scott, D. B. Miracle, Intermetallics 19, 698 (2011).
• [16] O. N. Senkov, V. Senkova, D. B. Miracle, C. Woodward, Mater.Sci. Eng. A 565 51 (2013).
• [17] E. Fazakas, V. Zadorozhnyy, L. K. Varga, A. Inoue, D. V. Louzguine-Luzgin, F. Tian, L. Vitos, Int. J. Refract. Hard. Met. 47, 131 (2014).

Uwagi

EN

1. This research was supported by the Basic Science Research Program of the National Research Foundation of Korea (NRF) funded by the Ministry of Education (NRF-2018R1D1A1B07041526).

PL

2. Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2020).