Chinese Journal of Lasers, Volume. 49, Issue 16, 1602004(2022)
Effects of Oxygen on Morphology, Microstructure and Mechanical Property of Joint in Laser Welding of 304 Stainless Steel and Nickel
Figures & Tables(13)
Fig. 3. Cross-sectional morphologies of weld under different oxygen contents. (a) 0%; (b) 8%; (c) 16%; (d) 21%
Fig. 4. Surface morphologies of weld seam under different oxygen contents. (a) 0%; (b) 8%; (c) 16%; (d) 21%
Fig. 6. Cross-sectional microstructures of weld under different oxygen contents. (a) (b) Sampling positions; (c)(j) microstructures
Fig. 7. EDS scanning results of weld section under different oxygen contents. (a) 0%; (b) 21%
Fig. 10. Schematics of Marangoni convection under different oxygen contents. (a) 21%; (b) 0%
Fig. 11. Schematics of solidification front of molten pool under different oxygen contents. (a) 21%; (b) 0%
Table 1. Chemical compositions of 304SS and nickel plate (mass fraction，%)
View tableTable 1. Chemical compositions of 304SS and nickel plate (mass fraction，%)
Element C P S Cr Ti Ni Fe Ni 0.081 - 0.015 - 0.056 99.700-99.800 0.062 304SS ≤0.080 ≤0.045 ≤0.030 18.000-20.000 - 8.000-10.500 Bal.
Table 2. Welding process parameters
View tableTable 2. Welding process parameters
Parameter Laser power /W Defocusing distance /mm Radius of laser spot /mm Welding speed /(mm·s－1) Flow of shielding gas /(L·min－1) Value 800 －5.5 0.58 20 15
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Binxin Dong, Yanmei Zhang, Gang Yu, Shaoxia Li, Xiuli He, Zhiyong Li, Baohua Liu. Effects of Oxygen on Morphology, Microstructure and Mechanical Property of Joint in Laser Welding of 304 Stainless Steel and Nickel[J]. Chinese Journal of Lasers, 2022, 49(16): 1602004
Paper Information
Category: laser manufacturing
Received: Sep. 24, 2021
Accepted: Nov. 22, 2021
Published Online: Jul. 28, 2022
The Author Email: Xiuli He (xlhe@imech.ac.cn), Zhiyong Li (lizhiyong@imech.ac.cn)
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