Chinese Journal of Lasers, Volume. 47, Issue 10, 1002006(2020)
Effect of Material States on Microstructure and Properties of GH4169 Superalloy Laser-Welded Joint
Figures & Tables(16)
Fig. 3. Macro morphology of laser welded joints with different material states. (a)(d) R/R GH4169 butt joint; (b)(e) R/3D GH4169 butt joint; (c)(f) 3D/3D GH4169 butt joint
Fig. 4. Microstructure of GH4169 laser welded joints with different material states. (a) R/R GH4169 butt joint; (b) R/3D GH4169 butt joint; (c) 3D/3D GH4169 butt joint
Fig. 5. Microstructure of the base metal. (a) R GH4169 base metal; (b) 3D GH4169 base metal
Fig. 6. Microstructure of GH4169 laser welded joints on the left of fusion zone with different material states. (a) R/R GH4169 butt joint; (b) 3D/3D GH4169 butt joint
Fig. 7. Microstructure of GH4169 laser welded joints in the center of fusion zone with different material states. (a) R/R GH4169 butt joint; (b) R/3D GH4169 butt joint; (c) 3D/3D GH4169 butt joint; (d) enlarged view of region A; (e) enlarged view of region B; (f) enlarged view of region C
Fig. 9. EDS scanning results of points in
Fig. 10. Microhardness of GH4169 laser welded joints with different material states. (a) R/R GH4169 butt joint; (b) R/3D GH4169 butt joint; (c) 3D/3D GH4169 butt joint; (d) average microhardness of the FZ
Fig. 11. Macro fracture locations of the tensile samples of GH4169 laser welded joints with different material states
Fig. 12. Tensile strength of GH4169 laser welded joints with different material states
Fig. 13. Fractography of GH4169 laser welded joints with different material states. (a) R GH4169 base metal; (b) fractography of 3D/3D GH4169 butt joint
Table 1. Chemical composition of GH4169 superalloy
View tableTable 1. Chemical composition of GH4169 superalloy
Element C Si B Mn Cr Mo Ti Mass fraction /% ≤0.035 ≤0.08 ≤0.003 ≤0.03 ≤18.93 ≤3.02 ≤1.03 Element Al Nb Fe Co P S Ni Mass fraction /% ≤0.53 ≤5.11 ≤19.46 ≤0.08 ≤0.006 ≤0.003 Bal.
Table 2. Weld width and area of GH4169 laser welded joints with different material states
View tableTable 2. Weld width and area of GH4169 laser welded joints with different material states
State Top weld width /mm Middle weld width /mm Bottom weld width /mm Weld area /mm2 R/R GH4169 1.91 0.69 1.05 3.05 R/3D GH4169 1.89 0.66 0.93 2.86 3D/3D GH4169 1.87 0.51 0.67 2.62
Table 3. The element mass fraction of points in
Fig. 7 unit:%View tableTable 3. The element mass fraction of points in
Fig. 7 unit:%Element Al Ti Cr Fe Ni Nb Mo P1 0.58 2.21 14.44 12.01 39.03 27.62 4.12 P2 3.43 8.37 16.02 15.34 35.22 15.06 6.56 P3 9.76 17.65 12.43 7.77 26.25 18.77 7.37 P4 5.44 5.61 15.57 15.05 41.51 16.81 - P5 1.46 7.35 17.53 14.52 34.31 24.83 - P6 0.77 10.98 17.35 14.24 36.70 19.96 -
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Sun Wenjun, Wang Shanlin, Tan Guanhua, Chen Yuhua, Xin Jijun, Hong Min, Ke Liming. Effect of Material States on Microstructure and Properties of GH4169 Superalloy Laser-Welded Joint[J]. Chinese Journal of Lasers, 2020, 47(10): 1002006
Paper Information
Category: laser manufacturing
Received: Mar. 16, 2020
Accepted: --
Published Online: Oct. 9, 2020
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