Microstructure and Mechanical Performance of the DD98M-DD98M Single Crystal Superalloy Joints Brazed Using a Pd-Si Composite Filler
Abstract
:1. Introduction
2. Materials and Methods
3. Results and Discussions
3.1. Microstructural Characterization
3.2. Effect of Brazing Temperature on the Microstructure and Mechanical Properties of the Joint
3.3. Effect of Soaking Time on the Microstructure and Mechanical Properties of the Joint
4. Conclusions
Author Contributions
Funding
Conflicts of Interest
References
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Substrates | Filler alloy | Mechanical properties |
---|---|---|
DD6 [15] | - | Tensile strength: 837.5 MPa |
DD98 to M963 [16] | Ni-15Cr-3B | Rupture life: 140 h at 800 °C for 350 MPa |
GH99 [18] | Graphene reinforced-BNi2 | Shear strength: 410.4 MPa at room temperature and 329.7 MPa at 800 °C |
Ni-based single crystal superalloy [19] | Ni-Cr-W-B + Ni | Rupture life: over 120 h at 980 °C for 250 MPa |
C/C to GH3044 [20] | Ni71CrSi | Shear strength: 54.4 MPa |
DD5 [21] | Ni-Co-Cr-W-B + DD99 | Tensile strength: 1010 MPa at 870 °C |
C | Cr | Co | W | Mo | Ta | Al | Ti | Ni |
---|---|---|---|---|---|---|---|---|
0.10 | 9.31 | 8.20 | 2.63 | 1.26 | 2.01 | 12.32 | 0.63 | Bal. |
Position | Al | Si | Ti | Cr | Co | Ni | Mo | Pd | Ta | W | Phase |
---|---|---|---|---|---|---|---|---|---|---|---|
A | 0.9 | 19.9 | 0.2 | 0.0 | 0.0 | 1.8 | 0.1 | 76.9 | 0.1 | 0.1 | Pd4Si |
B | 8.1 | 1.9 | 11.5 | 1.6 | 0.3 | 21.4 | 0.2 | 52.3 | 2.7 | 0.0 | Pd (Ni, Ti, Al) (s.s) |
C | 0.6 | 4.0 | 1.2 | 11.1 | 8.0 | 57.3 | 0.5 | 14.8 | 1.5 | 1.0 | Ni (Pd, Cr, Co) (s.s) |
D | 2.2 | 1.6 | 1.4 | 8.9 | 7.7 | 48.1 | 1.2 | 26.1 | 1.1 | 1.7 | Pd-rich Ni (Pd, Cr, Co) (s.s) |
E | 0.7 | 1.8 | 0.5 | 12.2 | 10.5 | 63.2 | 1.2 | 5.7 | 2.3 | 1.9 | Ni (Cr, Co, Pd) (s.s) |
F | 23.5 | 4.1 | 0.5 | 1.1 | 0.5 | 6.2 | 0.0 | 63.8 | 0.1 | 0.2 | Al2Pd5 |
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Qin, C.; Xu, H.; Zhou, Z.; He, Y.; Lu, C.; Gao, K.; Zheng, W.; Yang, J.; Wang, D.; Sun, Y.; et al. Microstructure and Mechanical Performance of the DD98M-DD98M Single Crystal Superalloy Joints Brazed Using a Pd-Si Composite Filler. Metals 2019, 9, 1001. https://doi.org/10.3390/met9091001
Qin C, Xu H, Zhou Z, He Y, Lu C, Gao K, Zheng W, Yang J, Wang D, Sun Y, et al. Microstructure and Mechanical Performance of the DD98M-DD98M Single Crystal Superalloy Joints Brazed Using a Pd-Si Composite Filler. Metals. 2019; 9(9):1001. https://doi.org/10.3390/met9091001
Chicago/Turabian StyleQin, Chunjie, Haitao Xu, Zhengqiang Zhou, Yanming He, Chuanyang Lu, Ke Gao, Wenjian Zheng, Jianguo Yang, Donghong Wang, Yuan Sun, and et al. 2019. "Microstructure and Mechanical Performance of the DD98M-DD98M Single Crystal Superalloy Joints Brazed Using a Pd-Si Composite Filler" Metals 9, no. 9: 1001. https://doi.org/10.3390/met9091001