Guoye Jiang, Yuping Liu, Pu Lei, Ming Pang, Min Li, Wei Fu. Forming Mechanism and Performance Analysis of X65 Oil and Gas Steel Pipeline Weld Fabricated by Laser Deep-Penetration Welding[J]. Laser & Optoelectronics Progress, 2020, 57(3): 031406
- Laser & Optoelectronics Progress
- Vol. 57, Issue 3, 031406 (2020)
Fig. 1. Schematic of laser beam deflection at welding speed of 15 mm/s
Fig. 2. Sample inspection diagram when welding speed is 5 mm/s
Fig. 3. Macroscopic forming diagrams of sample at different welding speeds. (a) 5 mm/s; (b) 15 mm/s
Fig. 4. Microstructures of heat affected zone at different welding speeds. (a) 5 mm/s; (b) 15 mm/s
Fig. 5. Microstructures of weld zone of specimen at different welding speeds. (a) 5 mm/s; (b) 15 mm/s
Fig. 6. Effect of welding speed change on hardness
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Table 1. Chemical composition of X65 steel pipeline
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