Jihong Li, Longyu Lei, Mingke Du, Yunlong Zhang, Min Zhang, Jie Shi, Jun Gao. Structure and Properties of T2 Copper/304 Stainless Steel Laser Welded Joint[J]. Laser & Optoelectronics Progress, 2022, 59(13): 1316001
- Laser & Optoelectronics Progress
- Vol. 59, Issue 13, 1316001 (2022)
Fig. 1. Schematic diagram of laser welding
Fig. 2. Macro morphology of welded joints under different beam offsets. (a) 0 mm; (b) 0.2 mm;（c）0.4 mm;（d）-0.2 mm;（e）-0.4 mm
Fig. 3. Schematic diagrams of formation mechanism of weld morphology. (a) Metal evaporation force; (b) Marangoni convection
Fig. 4. Microstructure of the copper fusion zone under different beam offsets. (a) 0 mm; (b) 0.2 mm;（c）0.4 mm;（d）-0.2 mm;（e）-0.4 mm
Fig. 5. Microstructure of the weld center under different beam offsets. (a) 0 mm; (b) 0.2 mm; (c) 0.4 mm; (d) -0.2 mm; (e) -0.4 mm
Fig. 6. Tensile test results of welded joints. (a) Stress-strain curve; (b) stress-elongation histogram
Fig. 7. Fracture morphology of welded joints under different beam offsets. (a) 0 mm; (b) 0.2 mm; (c) 0.4 mm; (d) -0.2 mm; (e) -0.4 mm
Fig. 8. Results of microhardness test
Fig. 9. Distribution of microhardness
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Table 1. Chemical composition of T2-Y and SUS304
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Table 2. Mechanical properties of T2-Y and SUS304
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Table 3. Laser welding parameters
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Table 4. EDS test results of weld
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Table 5. EDS test results of stretch fracture
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