Hot Deformation and Subsequent Annealing on the Microstructure and Hardness of an Al0.3CoCrFeNi High-entropy Alloy

doi:10.1007/s40195-021-01251-z

Abstract

Abstract:

The influence of simple thermomechanical processing such as hot deformation and heat treatment on the microstructure and hardness of an Al_0.3CoCrFeNi high-entropy alloy has been investigated. Results show that the relatively high deformation temperature can induce discontinuous dynamic recrystallization with fine grains initially nucleating at the elongated grain boundaries. The transition from partial recrystallization to fully recrystallization, as well as the precipitation behavior after annealing, has been described in detail. Both bcc precipitation and completely recrystallized grains can be observed after annealing at 1000 °C. Based on detailed microstructure analysis, the decrease in hardness value is shown to be related to both dynamic recrystallization and dynamic recovery which lead to softening.

Key words: High-entropy alloy, Hot deformation, Annealing, Microstructure, Recrystallization

Jun Wang, Hongchao Li, Haoxue Yang, Yu Zhang, William YiWang, Jinshan Li. Hot Deformation and Subsequent Annealing on the Microstructure and Hardness of an Al_0.3CoCrFeNi High-entropy Alloy[J]. Acta Metallurgica Sinica (English Letters), 2021, 34(11): 1527-1536.

Figures/Tables 10

Fig. 1 OM microstructures of as-cast Al0.3CoCrFeNi high-entropy alloy

Fig. 2 SEM microstructures of compressed Al0.3CoCrFeNi high-entropy alloy at a 600 °C, b 800 °C with the reduction of 40%

Fig. 3 SEM microstructures of compressed Al0.3CoCrFeNi at 600 °C (a), 800 °C (b) with the reduction of 60%

Fig. 4 Pole figures of compressed Al0.3CoCrFeNi high-entropy alloy at a 600 °C, b 800 °C with the reduction of 60%

Fig. 5 SEM microstructures of compressed Al0.3CoCrFeNi high-entropy alloy at 1000 °C with the reduction of a 40%, b 60%

Fig. 6 SEM microstructures of Al0.3CoCrFeNi annealed at 800 °C for 4 h after compressed under different conditions: a, b 600 °C-40%, c, d 600 °C-60%, e, f 800 °C-60%, g, h 1000 °C for 4 h after compressed at 800 °C-60%

Fig. 7 EBSD patterns of compressed Al0.3CoCrFeNi annealed at 1000 °C for 4 h: a IPF (inverse pole figure), b grain boundaries distribution, c grain sizes distribution, d misorientation angle distribution, e the pole figures of 1000 °C-4 h annealed Al0.3CoCrFeNi high-entropy alloy after compressed at 800 °C with the reduction of 60%

Fig. 8 TEM microstructures of Al0.3CoCrFeNi annealed at a, b 800 °C for 4 h after compressed at 600 °C with the reduction of 40%, c, d 1000 °C for 4 h after compressed at 800 °C with the reduction of 60%

Fig. 9 Schematic showing the different microstructural evolution resulting from hot deformation and heat treatment processes

Fig. 10 Microhardness of compressed Al0.3CoCrFeNi annealed at different temperatures

References 43

[1]	E.P. George, D. Raabe, R.O. Ritchie, Nat. Rev. Mater. 4, 515 (2019) DOI
[2]	W. Zhang, P.K. Liaw, Y. Zhang, Sci. China Mater. 61, 2 (2018) DOI URL
[3]	Y. Zhang, T.T. Zuo, Z. Tang, M.C. Gao, K.A. Dahmen, P.K. Liaw, Z.P. Lu, Prog. Mater Sci. 61, 1 (2014) DOI URL
[4]	S. Gorsse, D.B. Miracle, O.N. Senkov, Acta Mater. 135, 177 (2017) DOI URL
[5]	Z. Wang, Q. Fang, J. Li, B. Liu, Y. Liu, J. Mater. Sci. Technol. 34, 349 (2018) DOI URL
[6]	T. Yang, Y.L. Zhao, Y. Tong, Z.B. Jiao, J. Wei, J.X. Cai, X.D. Han, D. Chen, A. Hu, J.J. Kai, K. Lu, Y. Liu, C.T. Liu, Science 362, 933 (2018) DOI PMID
[7]	T. Yang, Y.L. Zhao, J.H. Luan, B. Han, J. Wei, J.J. Kai, C.T. Liu, Scr. Mater. 164, 30 (2019) DOI URL
[8]	O.N. Senkov, J.K. Jensen, A.L. Pilchak, D.B. Miracle, H.L. Fraser, Mater. Des. 139, 498 (2018) DOI URL
[9]	Z. Li, S. Zhao, R.O. Ritchie, M.A. Meyers, Prog. Mater Sci. 102, 296 (2019) DOI URL
[10]	X.D. Xu, P. Liu, Z. Tang, A. Hirata, S.X. Song, T.G. Nieh, P.K. Liaw, C.T. Liu, M.W. Chen, Acta Mater. 144, 107 (2018) DOI URL
[11]	B. Gwalani, S. Gangireddy, Y. Zheng, V. Soni, R.S. Mishra, R. Banerjee, Sci. Rep. 9, 6371 (2019) DOI PMID
[12]	D. Wei, X. Li, S. Schönecker, J. Jiang, W.-M. Choi, B.-J. Lee, H.S. Kim, A. Chiba, H. Kato, Acta Mater. 181, 318 (2019) DOI URL
[13]	B. Gwalani, S. Gorsse, D. Choudhuri, Y. Zheng, R.S. Mishra, R. Banerjee, Scr. Mater. 162, 18 (2019) DOI URL
[14]	Y.T. Wang, J.B. Li, Y.C. Xin, X.H. Chen, M. Rashad, B. Liu, Y. Liu, Acta Metall. Sin. -Engl. Lett. 32, 932 (2019)
[15]	Y. Yu, P. Shi, K. Feng, J. Liu, J. Cheng, Z. Qiao, J. Yang, J. Li, W. Liu, Acta Metall. Sin.-Engl. Lett. 33, 1077 (2020)
[16]	H. Yang, J. Li, X. Pan, W.Y. Wang, H. Kou, J. Wang, Acta Metall. Sin.-Engl. Lett. 72, 1 (2020)
[17]	C. Zhao, J. Li, Y. Liu, W.Y. Wang, H. Kou, E. Beaugnon, J. Wang, J. Mater. Sci. Technol. 73, 83 (2021) DOI URL
[18]	T. Zheng, X. Hu, F. He, Q. Wu, B. Han, C. Da, J. Li, Z. Wang, J. Wang, J.J. Kai, Z. Xia, C.T. Liu, J. Mater. Sci. Technol. 69, 156 (2020) DOI URL
[19]	F.G. Coury, M. Kaufman, A.J. Clarke, Acta Mater. 175, 66 (2019) DOI URL
[20]	B. Yin, F. Maresca, W.A. Curtin, Acta Mater. 188, 486 (2020) DOI URL
[21]	M. Komarasamy, T. Wang, K. Liu, L. Reza-Nieto, R.S. Mishra, Scr. Mater. 162, 38 (2019) DOI URL
[22]	J. Čížek, P. Haušild, M. Cieslar, O. Melikhova, T. Vlasák, M. Janeček, R. Král, P. Harcuba, F. Lukáč, J. Zýka, J. Málek, J. Moon, H.S. Kim, Alloys Compd. 768, 924 (2018) DOI URL
[23]	Á. Vida, Z. Maksa, D. Molnár, S. Huang, J. Kovac, L.K. Varga, L. Vitos, N.Q. Chinh, J J. Alloys Compd. 743, 234 (2018)
[24]	J.C. Rao, H.Y. Diao, V. Ocelík, D. Vainchtein, C. Zhang, C. Kuo, Z. Tang, W. Guo, J.D. Poplawsky, Y. Zhou, P.K. Liaw, J.T.M. De Hosson, Acta Mater. 131, 206 (2017) DOI URL
[25]	S. Wang, Y. Zhao, X. Xu, P. Cheng, H. Hou, Mater. Chem. Phys. 244, 122700 (2020) DOI URL
[26]	C. Haase, L.A. Barrales-Mora, Acta Mater. 150, 88 (2018) DOI URL
[27]	R.R. Eleti, T. Bhattacharjee, A. Shibata, N. Tsuji, Acta Mater. 171, 132 (2019) DOI URL
[28]	Y. Zhang, J. Li, J. Wang, W.Y. Wang, H. Kou, E. Beaugnon, J. Alloys Compd. 757, 39 (2018) DOI URL
[29]	Y. Zhang, J. Li, J. Wang, S. Niu, H. Kou, Metals 6, 277 (2016) DOI URL
[30]	N.N. Guo, L. Wang, L.S. Luo, X.Z. Li, R.R. Chen, Y.Q. Su, J.J. Guo, H.Z. Fu, Mater. Sci. Eng. A 651, 698 (2016) DOI URL
[31]	J. Yang, J.W. Qiao, S.G. Ma, G.Y. Wu, D. Zhao, Z.H. Wang, J. Alloys Compd. 795, 269 (2019) DOI URL
[32]	H. Yang, J. Li, T. Guo, W.Y. Wang, H. Kou, J. Wang, Met. Mater. Int. 25, 1145 (2019) DOI URL
[33]	Y.F. Kao, T.J. Chen, S.K. Chen, J.W. Yeh, J. Alloys Compd. 488, 57 (2009) DOI URL
[34]	B. Gwalani, V. Soni, M. Lee, S.A. Mantri, Y. Ren, R. Banerjee, Mater. Des. 121, 254 (2017) DOI URL
[35]	M. Annasamy, N. Haghdadi, A. Taylor, P. Hodgson, D. Fabijanic, Mater. Sci. Eng. A 754, 282 (2019) DOI URL
[36]	N.D. Stepanov, D.G. Shaysultanov, N.Y. Yurchenko, S.V. Zher-ebtsov, A.N. Ladygin, G.A. Salishchev, M.A. Tikhonovsky, Mater. Sci. Eng. A 636, 188 (2015) DOI URL
[37]	M. Tikhonova, A. Belyakov, R. Kaibyshev, Mater. Sci. Eng. A 564, 413 (2013) DOI URL
[38]	W.R. Wang, W.L. Wang, J.W. Yeh, J. Alloys Compd. 589, 143 (2014) DOI URL
[39]	B. Gwalani, D. Choudhuri, K. Liu, J.T. Lloyd, R.S. Mishra, R. Banerjee, Mater. Sci. Eng. A 771, 138620 (2020) DOI URL
[40]	T. Guo, J. Li, J. Wang, W.Y. Wang, Y. Liu, X. Luo, H. Kou, E. Beaugnon, Mater. Sci. Eng. A 729, 141 (2018) DOI URL
[41]	C.W. Tsai, Y.L. Chen, M.H. Tsai, J.W. Yeh, T.T. Shun, S.K. Chen, J. Alloys Compd. 486, 427 (2009) DOI URL
[42]	P.P. Bhattacharjee, G.D. Sathiaraj, M. Zaid, J.R. Gatti, C. Lee, C.W. Tsai, J.W. Yeh, J. Alloys Compd. 587, 544 (2014) DOI URL
[43]	K.Y. Tsai, M.H. Tsai, J.W. Yeh, Acta Mater. 61, 4887 (2013) DOI URL