Hot Compression Behavior and Tensile Property of a Novel Ni-Co-Based Superalloy Prepared by Electron Beam Smelting Layered Solidification Technology

doi:10.1007/s40195-023-01639-z

Abstract

Abstract:

The hot compression behavior and tensile strength after compression of a new Ni-Co-based superalloy produced using electron beam smelting layered (EBSL) solidification technology were investigated. Isothermal compression tests were performed at temperatures of 1120 ℃ and 1150 ℃, with strain rates of 1 s⁻¹ and 0.01 s⁻¹, reaching a true strain of 0.51. Tensile strength was evaluated at room temperature. The results revealed that this EBSL technology accelerates dynamic recrystallization (DRX), without compromising the strength of alloy. A significant correlation between the volume fraction of DRX and the strain rate was observed, with higher fractions at lower strain rates, leading to higher tensile strength. Additionally, at the same strain rate, the specimens compressed at 1120 ℃ exhibited higher tensile strength due to undissolved γ′ precipitates. After solution and aging heat treatment, the alloy maintained high tensile strength. The results suggested that the EBSL Ni-Co-based superalloy offers excellent prospects for practical applications.

Key words: Ni-Co-based superalloy, Hot deformation, Electron beam smelting, Tensile strength

Yong-Chao Gai, Rui Zhang, Chuan-Yong Cui, Zi-Jian Zhou, Yi Tan, Yi-Zhou Zhou, Xiao-Feng Sun. Hot Compression Behavior and Tensile Property of a Novel Ni-Co-Based Superalloy Prepared by Electron Beam Smelting Layered Solidification Technology[J]. Acta Metallurgica Sinica (English Letters), 2024, 37(2): 283-292.

Figures/Tables 11

Table 1 Chemical composition of the EBSL-alloy (wt%)

C + B + Cr	Co	Cr	Al + Ti	W	Mo	Ni
0.04-0.11	20-25	12-14	7.4-8.4	1.1-1.5	2.5-2.9	Bal

Fig. 1 Schematic representation of the experiment: a specimen before deformation (unit: mm), b schematic of hot deformation, c size of tensile specimen (unit: mm), d room temperature tensile test

Fig. 2 Microstructures of the homogenized EBSL-alloy: a cross-sectional microstructure, b morphology of γ′ phases, c morphology of MC carbides; d MC carbides in the VIM alloy

Fig. 3 Morphologies of γ′ phases of EBSL-alloy soaking at 1120 ℃ a, 1150 ℃ b for 10 min

Fig. 4 True stress-strain curves of EBSL-alloy deformed up to a 0.51 true strain at 1120 ℃ and 1150 ℃ with strain rates: a 0.01 s−1, b 1 s−1

Fig. 5 a-d IPF and e-h GOS maps of EBSL-alloy deformed at a, e, c, g 1120 ℃ and b, f, d, h 1150 ℃ with strain rates of a, b, e, f 0.01 s−1 and c, g, d, h 1 s−1

Fig. 6 RT tensile strength of EBSL-alloy after different deformation conditions: a yield strength, b ultimate tensile strength, c uniform elongation, d stress-strain curves

Fig. 7 a, c Macroscopic morphologies, and b, d microstructures of fracture for a, b 1120 ℃-0.01 s−1, c, d 1150 ℃-0.01 s−1 specimens

Fig. 8 Morphologies of γ′ precipitates for a 1120 ℃-0.01 s−1, b 1150 ℃-0.01 s−1 specimens after solution and aging heat treatments

Fig. 9 Stress-strain curves of 1120 ℃-0.01 s−1 and 1150 ℃-0.01 s−1 specimens before and after heat treatment

Table 2 RT tensile strength of several superalloys

Alloy	R_m (MPa)	R_e (MPa)	A (%)
EBSL-alloy (this work)	990	1294	22.7
A new Ni-Co-based superalloy [39]	1045	1420	24
GH4065A [40]	1057	1444	20.5
GH4175 [41]	1191	1513	15
Nimonic 105 [42]	880	1220	23

References 43

[1]	C.Y. Cui, Y.F. Gu, Y. Yuan, T. Osada, H. Harada, Mater. Sci. Eng. A 528, 5465 (2011) DOI URL
[2]	Y. Gu, H. Harada, C. Cui, D. Ping, A. Sato, J. Fujioka, Scr. Mater. 55, 815 (2006) DOI URL
[3]	C.Y. Cui, Y.F. Gu, D.H. Ping, H. Harada, Metall. Mater. Trans. A 40, 282 (2009) DOI URL
[4]	C. Tian, L. Xu, C. Cui, X. Sun, Metall. Mater. Trans. A 46, 4601 (2015) DOI URL
[5]	C. Cui, R. Zhang, Y. Zhou, X. Sun, J. Mech. Sci. Technol. 51, 16 (2020)
[6]	P. Liu, R. Zhang, Y. Yuan, C. Cui, Y. Zhou, X. Sun, J. Alloys Compd. 831, 154618 (2020) DOI URL
[7]	C.Z. Zhu, R. Zhang, C.Y. Cui, Y.Z. Zhou, J.L. Qu, B. Gan, B.J. Zhang, X.F. Sun, J. Alloys Compd. 905, 164167 (2022) DOI URL
[8]	C.Z. Zhu, R. Zhang, C.Y. Cui, Y.Z. Zhou, F.G. Liang, X. Liu, X.F. Sun, Mater. Sci. Eng. A 802, 140646 (2021) DOI URL
[9]	Z. Zhou, R. Zhang, C. Cui, Y. Zhou, X. Sun, Mater. Sci. Eng. A 853, 143741 (2022) DOI URL
[10]	H. Cui, Y. Tan, R. Bai, Y. Li, L. Zhao, X. Zhuang, Y. Wang, Z. Chen, P. Li, X. You, C. Cui, J. Mater. Res. Technol. 15, 4970 (2021) DOI URL
[11]	G.D. Zhao, L.X. Yu, F. Qi, F. Liu, W.R. Sun, Z.Q. Hu, Acta Metall. Sin. -Engl. Lett. 29, 518 (2016)
[12]	Z. Zhou, R. Zhang, C. Cui, Y. Zhou, X. Sun, Acta Metall. Sin. -Engl. Lett. 34, 943 (2021)
[13]	Z. Wan, L. Hu, Y. Sun, T. Wang, Z. Li, J. Alloys Compd. 769, 367 (2018) DOI URL
[14]	J. Chen, J. Dong, M. Zhang, Z. Yao, Mater. Sci. Eng. A 673, 122 (2016) DOI URL
[15]	G. Zhao, X. Zang, Y. Jing, N. Lü, J. Wu, Mater. Sci. Eng. A 815, 141293 (2021) DOI URL
[16]	S. Lv, J. Chen, X. He, C. Jia, K. Wei, X. Qu, Materials 13, 4553 (2020) DOI URL
[17]	S. Lv, C. Jia, X. He, Z. Wan, X. Li, X. Qu, Materials 12, 3667 (2019)
[18]	X.B. Fan, S.J. Yuan, Int. J. Extrem. Manuf. 4, 033001 (2022) DOI
[19]	Y. Chen, S. Zhao, H. Wang, J. Li, L. Hua, Materials 16, 1680 (2023) DOI URL
[20]	P. Wang, G. Wan, J. Jin, Y. Wang, N. Xiang, X. Zhao, X. Zhao, B. Yuan, Z. Wang, J. Mater. Res. Technol. 307, 117698 (2022)
[21]	H. Cui, Y. Tan, R. Bai, Y. Li, X. Zhuang, Z. Chen, X. You, P. Li, C. Cui, Mater. Charact. 184, 111668 (2022) DOI URL
[22]	H. Cui, Y. Tan, R. Bai, L. Ning, X. You, C. Cui, P. Li, J. Alloys Compd. 934, 167880 (2023) DOI URL
[23]	S. Chang, K. Wang, B. Wang, M. Kopec, Z. Li, L. Wang, G. Liu, Mater. Sci. Eng. A 880, 145337 (2023) DOI URL
[24]	R. Fan, Y. Wu, M. Chen, D. Wu, T. Wu, J. Mater. Res. Technol. 319, 118067 (2023)
[25]	D. Jia, W. Sun, D. Xu, L. Yu, X. Xin, W. Zhang, F. Qi, J. Alloys Compd. 787, 196 (2019) DOI URL
[26]	S.S.S. Kumar, T. Raghu, P.P. Bhattacharjee, G.A. Rao, U. Borah, J. Alloys Compd. 681, 28 (2016) DOI URL
[27]	C.A.C. Imbert, H.J. McQueen, Mater. Sci. Eng. A 313, 104 (2001) DOI URL
[28]	A. Nicolaÿ, G. Fiorucci, J.M. Franchet, J. Cormier, N. Bozzolo, Acta Mater. 174, 406 (2019) DOI URL
[29]	H. Jiang, J. Dong, M. Zhang, Z. Yao, Metall. Mater. Trans. A 47, 5071 (2016) DOI URL
[30]	Y.C. Lin, X.Y. Wu, X.M. Chen, J. Chen, D.X. Wen, J.L. Zhang, L.T. Li, J. Alloys Compd. 640, 101 (2015) DOI URL
[31]	J. Humphreys, G.S. Rohrer, A. Rollett, in Recrystallization and Related Annealing Phenomena (Elsevier, 2017), pp.305-320
[32]	M. Azarbarmas, M. Aghaie-Khafri, J.M. Cabrera, J. Calvo, Mater. Sci. Eng. A 678, 137 (2016) DOI URL
[33]	P. Liu, R. Zhang, Y. Yuan, C. Cui, F. Liang, X. Liu, Y. Gu, Y. Zhou, X. Sun, J. Mech. Sci. Technol. 77, 66 (2021)
[34]	Z. Zhou, R. Zhang, C. Cui, Y. Zhou, X. Sun, Mater. Sci. Eng. A 833, 142370 (2022) DOI URL
[35]	D. Jia, W. Sun, D. Xu, F. Liu, J. Mech. Sci. Technol. 35, 1851 (2019) DOI
[36]	S.S.S. Kumar, T. Raghu, P.P. Bhattacharjee, G. Appa Rao, U. Borah, Mater. Charact. 146, 217 (2018) DOI URL
[37]	T. Tian, Z. Hao, X. Li, C. Jia, S. Peng, Q. Zhu, C. Ge, J. Alloys Compd. 830, 154699 (2020) DOI URL
[38]	M. Azadi, A. Marbout, S. Safarloo, M. Azadi, M. Shariat, M.H. Rizi, Mater. Sci. Eng. A 711, 195 (2018) DOI URL
[39]	C.Z. Zhu, R. Zhang, C.Y. Cui, Y.Z. Zhou, Y. Yuan, Z.S. Yu, X. Liu, X.F. Sun, Metall. Mater. Trans. A 52, 108 (2021) DOI
[40]	G.P. Zhao, S. Huang, B.J. Zhang, G.H. Xu, H.Y. Qin, W.Y. Zhang, J. Iron Steel Res. 27, 37 (2015)
[41]	H. Jiang, J.X. Dong, M.C. Zhang, Z.H. Yao, Aeron. Manuf. Technol. 64, 62 (2021)
[42]	T. Peng, Y.L. Wang, B. Yang, G. Yang, Mater. Sci. Eng. A 828, 142028 (2021) DOI URL
[43]	Y.T. Tang, C. Panwisawas, J.N. Goussoub, Y. Gong, J.W.G. Clark, A.A.N. Nemeth, D.G. Mccartney, R.C. Reed, Acta Mater. 202, 417 (2021) DOI URL