J. Mater. Sci. Technol. ›› 2019, Vol. 35 ›› Issue (9): 2099-2106.DOI: 10.1016/j.jmst.2019.04.011
• Orginal Article • Previous Articles Next Articles
Wen-Wen Li, Bo Chen, Hua-Ping Xiong*(), Wen-Jiang Zou, Hai-Shui Ren
Received:
2018-08-05
Revised:
2018-11-02
Accepted:
2018-11-19
Online:
2019-09-20
Published:
2019-07-26
Contact:
Xiong Hua-Ping
About author:
1 These authors contributed equally to this work.
Wen-Wen Li, Bo Chen, Hua-Ping Xiong, Wen-Jiang Zou, Hai-Shui Ren. Joining of Cf/SiC composite to GH783 superalloy with NiPdPtAu-Cr filler alloy and a Mo interlayer[J]. J. Mater. Sci. Technol., 2019, 35(9): 2099-2106.
Microzones | Composition (at.%) | Deduced phases | |||||||
---|---|---|---|---|---|---|---|---|---|
C | Si | Ni | Pd | Cr | Pt | Au | Mo | ||
1 | 18.13 | 4.44 | 3.45 | 1.77 | 68.83 | 0.85 | 0.29 | 2.23 | Cr3C2 |
2 | 21.97 | 11.38 | 23.02 | 0.45 | 14.73 | 1.50 | 0.58 | 26.37 | Mo2C, Cr3C2, Ni-Si |
3 | 9.48 | 22.85 | 9.70 | 45.99 | 0.41 | 9.09 | 1.75 | 0.73 | Pd2Si |
4 | / | 0.12 | 5.30 | 8.88 | 17.43 | / | 62.43 | 5.83 | Au (Cr)ss |
5 | / | 16.08 | 27.32 | 0.32 | 17.13 | 1.31 | 0.77 | 37.07 | Mo-Ni(Cr)-Si |
6 | / | 22.37 | 31.96 | 0.32 | 6.49 | 1.32 | 0.70 | 36.85 | Γ1’’(Mo-Ni-Si) |
7 | / | 15.52 | 29.25 | 0.16 | 3.44 | 0.41 | 0.70 | 50.53 | Γ1’(Mo-Ni-Si) |
8 | 7.29 | 12.17 | 17.40 | 0.61 | 11.48 | 5.39 | 1.07 | 44.59 | Mo(Ni,Si,Cr)ss |
Table 1 EDS results for the microzones marked in Fig. 3(b).
Microzones | Composition (at.%) | Deduced phases | |||||||
---|---|---|---|---|---|---|---|---|---|
C | Si | Ni | Pd | Cr | Pt | Au | Mo | ||
1 | 18.13 | 4.44 | 3.45 | 1.77 | 68.83 | 0.85 | 0.29 | 2.23 | Cr3C2 |
2 | 21.97 | 11.38 | 23.02 | 0.45 | 14.73 | 1.50 | 0.58 | 26.37 | Mo2C, Cr3C2, Ni-Si |
3 | 9.48 | 22.85 | 9.70 | 45.99 | 0.41 | 9.09 | 1.75 | 0.73 | Pd2Si |
4 | / | 0.12 | 5.30 | 8.88 | 17.43 | / | 62.43 | 5.83 | Au (Cr)ss |
5 | / | 16.08 | 27.32 | 0.32 | 17.13 | 1.31 | 0.77 | 37.07 | Mo-Ni(Cr)-Si |
6 | / | 22.37 | 31.96 | 0.32 | 6.49 | 1.32 | 0.70 | 36.85 | Γ1’’(Mo-Ni-Si) |
7 | / | 15.52 | 29.25 | 0.16 | 3.44 | 0.41 | 0.70 | 50.53 | Γ1’(Mo-Ni-Si) |
8 | 7.29 | 12.17 | 17.40 | 0.61 | 11.48 | 5.39 | 1.07 | 44.59 | Mo(Ni,Si,Cr)ss |
Fig. 5. X-diffraction pattern for the fractured surface of the Cf/SiC-Mo-GH783 joint after bend test (δMo = 0.5 mm, surface of GH783 superalloy side).
Fig. 6. Microstructure of Mo-GH783 interface for the Cf/SiC-Mo(0.5 mm)-GH783 joint (a) and the corresponding area distribution maps of elements Au (b), Ni(c), Pd (d), Pt (e), Cr (f), Mo (g), Co (h) and Al (i).
Micro zones | Composition (at.%) | Deduced phases | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
C | Al | Si | Cr | Fe | Co | Ni | Mo | Pd | Pt | Au | ||
1 | 15.56 | 0.54 | 6.15 | 8.82 | 4.25 | 12.18 | 17.21 | 31.83 | 1.54 | 1.93 | / | Mo(Ni,Co)ss |
2 | / | 27.56 | / | / | / | 0.72 | 4.32 | / | 54.86 | 3.54 | 9.00 | Pd2Al |
3 | 24.27 | 4.84 | / | 8.82 | 4.72 | 2.17 | 10.11 | / | 14.31 | / | 30.78 | Au(Pd,Ni)ss |
4 | 8.08 | 1.96 | 2.28 | 16.29 | 11.59 | 16.14 | 28.88 | / | 4.79 | 6.60 | 3.39 | Residual filler alloy |
Table 2 EDS results for the microzones marked in Fig. 6(a).
Micro zones | Composition (at.%) | Deduced phases | ||||||||||
---|---|---|---|---|---|---|---|---|---|---|---|---|
C | Al | Si | Cr | Fe | Co | Ni | Mo | Pd | Pt | Au | ||
1 | 15.56 | 0.54 | 6.15 | 8.82 | 4.25 | 12.18 | 17.21 | 31.83 | 1.54 | 1.93 | / | Mo(Ni,Co)ss |
2 | / | 27.56 | / | / | / | 0.72 | 4.32 | / | 54.86 | 3.54 | 9.00 | Pd2Al |
3 | 24.27 | 4.84 | / | 8.82 | 4.72 | 2.17 | 10.11 | / | 14.31 | / | 30.78 | Au(Pd,Ni)ss |
4 | 8.08 | 1.96 | 2.28 | 16.29 | 11.59 | 16.14 | 28.88 | / | 4.79 | 6.60 | 3.39 | Residual filler alloy |
Fig. 7. Change of room-temperature strength of the Cf/SiC-Mo-GH783 joint with thickness of Mo interlayer (a) and the joint appearance after bend test (b).
Fig. 8. Fracture surface of the Cf/SiC-Mo(0.5 mm)-GH783 joints: (a) GH783 side; (b) fracture surface at a high magnification for selected area in (a); and (c) Cf/SiC side.
Microzones | Compositions (at.%) | Deduced phases | |||||||
---|---|---|---|---|---|---|---|---|---|
C | Si | Ni | Pd | Cr | Pt | Au | Mo | ||
1 | / | 2.99 | 6.43 | 0.41 | 2.68 | 1.88 | 1.51 | 84.10 | Mo(s,s) |
2 | / | 20.37 | 35.51 | 1.04 | 7.86 | 1.48 | / | 33.74 | MoNiSi |
3 | 5.40 | 22.82 | 26.48 | 0.74 | 22.25 | 1.00 | 0.41 | 20.91 | MoNiSi Cr-riched phase |
4 | 4.57 | 25.04 | 26.49 | 3.01 | 12.81 | 1.33 | / | 26.75 | MoNiSi Cr-riched phase |
5 | 4.87 | 18.30 | 11.57 | 47.52 | 4.04 | 4.41 | 9.29 | / | Pd2Si |
Table 3 EDS results for the microzones marked in Fig. 8.
Microzones | Compositions (at.%) | Deduced phases | |||||||
---|---|---|---|---|---|---|---|---|---|
C | Si | Ni | Pd | Cr | Pt | Au | Mo | ||
1 | / | 2.99 | 6.43 | 0.41 | 2.68 | 1.88 | 1.51 | 84.10 | Mo(s,s) |
2 | / | 20.37 | 35.51 | 1.04 | 7.86 | 1.48 | / | 33.74 | MoNiSi |
3 | 5.40 | 22.82 | 26.48 | 0.74 | 22.25 | 1.00 | 0.41 | 20.91 | MoNiSi Cr-riched phase |
4 | 4.57 | 25.04 | 26.49 | 3.01 | 12.81 | 1.33 | / | 26.75 | MoNiSi Cr-riched phase |
5 | 4.87 | 18.30 | 11.57 | 47.52 | 4.04 | 4.41 | 9.29 | / | Pd2Si |
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