Chinese Journal of Lasers, Volume. 50, Issue 8, 0802306(2023)
Research on High-Quality Additive Manufacturing Process of Titanium Alloy Fuse with Composite Heat Source
Figures & Tables(22)
Fig. 1. Fine-wire deposition process with laser and joule heat hybrid source. (a) Schematic; (b) experimental device
Fig. 3. Effects of laser power on geometric characteristics of single bead. (a) Width and height; (b) wetting angle
Fig. 4. Forming morphologies and cross sections under different laser powers. (a) P=75 W; (b) P=125 W; (c) P=200 W
Fig. 5. Effects of wire feed speed on geometric characteristics of single bead. (a) Width and height; (b) wetting angle
Fig. 6. Forming morphologies and cross sections under different wire feed speeds. (a) Vf=60 mm/min; (b) Vf=240 mm/min; (c) Vf=360 mm/min
Fig. 7. Effects of traveling speed on geometric characteristics of single bead. (a) Width and height; (b) wetting angle
Fig. 8. Forming morphologies and cross sections under different travel speeds. (a) VS=30 mm/min; (b) VS=150 mm/min; (c) VS=300 mm/min
Fig. 9. Effects of joule current on geometric characteristics of single bead. (a) Width and height; (b) wetting angle
Fig. 10. Forming morphologies and cross sections under different currents. (a) I=4 A; (b) I=6 A; (c) I=10 A
Fig. 12. Thin wall morphologies under different process parameters. (a) P=50 W; (b) P=175 W; (c) P=100 W
Fig. 13. Effects of defects on thin wall forming. (a) Interlayer increment is too large; (b) wire spheroidization; (c) protrusions at deposition origin
Fig. 14. Thin wall forming process and sample display. (a) Thin wall deposition process; (b) forming thin-walled parts; (c) triangular thin wall display
Fig. 15. Measured results of thin wall dimensions. (a) Length; (b) wall thickness
Fig. 17. Surface roughness test of thin-walled parts. (a1)(a2) Area Ⅰ; (b1)(b2) area Ⅱ; (c1)(c2) area Ⅲ
Fig. 18. Mechanical property test. (a) Tensile specimen size; (b) stress-strain curves
Fig. 19. Macro/micro morphology of fracture. (a1)(a2) Traveling direction; (b1)(b2) deposition direction
Table 1. Chemical compositions of Ti-6Al-4V
View tableTable 1. Chemical compositions of Ti-6Al-4V
Element Al Si Fe V C O N Ti Mass fraction /% 5.40 0.15 0.30 3.41 11.00 0.15 0.15 Bal.
Table 2. Experimental parameters of fine-wire deposition with laser and joule heat hybrid source
View tableTable 2. Experimental parameters of fine-wire deposition with laser and joule heat hybrid source
Process parameter Value Laser power P /W 50，75，100，125，150， 175 ，200Wire feed speed Vf /（mm·min-1） 60， 120 ，180，240，300，360Travel speed Vs /（mm·min-1） 30，60，90， 120 ，150，180，210，240，270，300Joule current I /A 0，2，4， 5 ，6，8，10，12
Table 3. Comparison of mechanical properties under different processes
View tableTable 3. Comparison of mechanical properties under different processes
Condition UTS /MPa Yield strength /MPa Elongation /% Casting 835 765 5 Forging 895 828 10 Wire based additive layer manufacturing［ 24 ］872-940 791-874 4.1-12.5 This process 905-960 610-870 14-20
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Qigao Feng, Linxin Wang, Lei Wang, Lijie Ma, Yongkai Tang, Bobo Li. Research on High-Quality Additive Manufacturing Process of Titanium Alloy Fuse with Composite Heat Source[J]. Chinese Journal of Lasers, 2023, 50(8): 0802306
Paper Information
Category: Laser Additive Manufacturing
Received: May. 27, 2022
Accepted: Aug. 9, 2022
Published Online: Mar. 6, 2023
The Author Email: Wang Linxin (wlx08036012@163.com)
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