Effect of Bonding Temperature on the Microstructures and Strengths of C/C Composite/GH3044 Alloy Joints by Partial Transient Liquid-Phase (PTLP) Bonding with Multiple Interlayers

doi:10.1007/s40195-014-0090-y

Abstract

Abstract:

With the use of Ti/Ni/Cu/Ni multiple foils as interlayer, carbon/carbon (C/C) composite was bonded to Ni-based superalloy GH3044 by partial transient liquid-phase bonding technique. The effect of bonding temperature on the microstructures and strengths of the joints was investigated. The results showed that gradient structural multiple interlayers composed of “C–Ti reaction layer/Ti–Ni intermetallic compound layer/Ni–Cu sosoloid/residual Cu layer/Ni-GH3044 diffusion layer” were formed between C/C composite and GH3044. The shear strength of the C/C composite/GH3044 joint reached the highest value of 26.1 MPa when the bonding temperature was 1,030 °C. In addition, the fracture morphology showed that the fracture mode changed with the increase of bonding temperature.

Key words: Partial transient liquid-phase bonding, C/C composite, Ni-based superalloy, Microstructure, Joint shear strength

Xin Zhang, Xiaohong Shi, Jie Wang, Hejun Li, Kezhi Li, Yancai Ren. Effect of Bonding Temperature on the Microstructures and Strengths of C/C Composite/GH3044 Alloy Joints by Partial Transient Liquid-Phase (PTLP) Bonding with Multiple Interlayers[J]. Acta Metallurgica Sinica (English Letters), 2014, 27(4): 663-669.

Figures/Tables 12

Table 1 Chemical composition of Ni-based superalloy GH3044 (in wt%)

Cr	W	Mo	Al	Ti	Fe	N	Si	Trace	Ni
23.5–26.5	13.0–16.0	≤1.5	≤0.50	0.30–0.70	≤4.0	≤0.50	≤0.80	≤0.04	Bal.

Fig. 1 Schematic diagram of the placement of sample

Fig. 2 Schematic diagram of setup for shear strength testing

Fig. 3 a SEM image of the C/C composite/GH3044 joint obtained at 1,010 °C, the arrows represented for lamination defects; b magnifying image of the zone A marked in Fig. 3a

Fig. 4 a SEM image of the C/C composite/GH3044 joint obtained at 1,030 °C (inset of image is the line-scanning EDS analysis for the cross section of the joint); b, c magnifying of the zone A marked in Fig. 4a

Table 2 The EDS analysis results of the zones as marked in Fig. 4c

Zone	Composition (at%)				Possible phase
Zone	C	Ti	Ni	Cu	Possible phase
A	36.76	48.90	14.34	–	TiC, NiTi
B	26.76	38.90	34.34	–	TiC, NiTi
C	32.07	21.91	32.01	14.01	TiNi, Ni–Cu
D	31.47	18.90	49.63	–	Ni₃Ti
E	37.57	0.75	18.53	43.15	Ni–Cu

Fig. 5 a SEM image of the C/C composite/GH3044 joint obtained at 1,050 °C; b, c magnifying of the zone A marked in Fig. 5a

Table 3 The EDS analysis results in the zones as marked in Fig. 5c

Zone	Composition (at%)				Possible phase
Zone	C	Ti	Ni	Cu	Possible phase
A₁	38.45	58.34	^–	3.22	TiC
B₁	30.19	35.73	29.02	5.06	TiC, NiTi,
C₁	35.37	25.18	29.83	9.61	NiTi, Ni–Cu
D₁	27.32	28.77	33.62	10.28	NiTi, Ni–Cu
E₁	22.79	8.02	41.50	27.69	Ni–Cu

Fig. 6 XRD patterns of the fracture surfaces on the GH3044 side at different bonding temperatures

Fig. 7 Fracture surface morphologies of the joints on the GH3044 side at different bonding temperatures: a 1010 °C, b 1030 °C, c 1050 °C; d the magnification SEM image of fracture surface on the C/C composite side obtained at 1,070 °C (inset is the image of fracture surface on the C/C composite side)

Fig. 8 Schematic diagrams of the fracture modes for the joints in mode 1 a, in mode 2 b

Table 4 The EDS analysis results of point F and point G as marked in Fig. 7 (in wt%)

Point	C	O	Ti	Cr	Ni	Cu
Piont F	15.7	3.55	2.65	78.62	–	–
Piont G	4.60	–	1.76	2.93	63.22	27.49

References 18

[1]	J.M. Zhang, M. Xie, X.C. Song, J. Mater. Rev. 5, 12(2010)
[2]	B.Y. Chen, J. Aviat. Eng. Maint. 12, 12(1995)
[3]	G. Wang, B.G. Zhang, J.S. He, Y.B. Ma, J. Weld. Join. 1, 20(2008). (in Chinese)
[4]	H.J. Li, New Carbon Mater. 16, 79(2001)
[5]	H.J. Li, R.Y. Luo, Z. Yang, J. Mater. Eng. 8, 8(1997). (in Chinese)
[6]	C.J. Li, B.X. Ma, Z.H. Jin, Mater. Sci. Eng. 18, 135(2000)
[7]	L.J. Guo, C. Guo, H.J. Li, K.Z. Li, J. Rare Met. Mater. Eng. 40, 111(2011)
[8]	M. Singh, Scr. Mater. 37, 1151(1997)10.1016/S1359-6462(97)00233-9
[9]	G.I. Howling, E. Ingham, H. Sakoda, T.D. Stewart, J. Fisher, A. Antonarulrajah, S. Appleyard, B. Rand, J. Mater. Sci. 15, 91(2004)
[10]	F.T. Lan, K.Z. Li, H.J. Li, L.J. Guo, W.F. Cao, J. Mater. Rev. 23(4), 9(2006)
[11]	Y.X. Shen, Z.L. Li, C.Y. Hao, J.S. Zhang, J. Eur. Ceram. Soc. 32, 1769(2012)10.1016/j.jeurceramsoc.2011.12.016
[12]	F. GaleW, Y. Guan, J. Mater. Sci. 32, 357(1997)10.1023/A%3A1018597115287
[13]	X.Q. Ji, X.J. Li, T.Y. Ma, Y. Zhang, J. Chin. Ceram. Soc. 3, 305(2002)
[14]	C.G. Zhang, G.J. Qiao, Z.H. Jin, J. Eur. Ceram. Soc. 22, 2181(2002)10.1016/S0955-2219(02)00011-0
[15]	S.M. Zhang, K.Z. Li, J. Wang, X.R. Song, L.J. Guo, J. Solid Rocket Technol. 35, 414(2012)
[16]	Y.H. Zhang, F.S. Wang, A.M. Zhang, Cast. Forg. Weld. 39(9), 163(2010). (in Chinese)
[17]	J.T. Xiong, J.N. Li, F.S. Zhang, W.D. Wang, J. Inorg. Mater. 21, 1391(2006)
[18]	Y.H. Zhang, J.Q. Liu, X.X. Duan, Electr. Weld. Mach. 37, 15(2007)