Integrated modeling of cracking during deep penetration laser welding of nickel alloys

https://www.seevid.ir/fa/w/Yd1o_jSuMCw Introduction https://www.seevid.ir/fa/w/Yd1o_jSuMCw Theory https://www.seevid.ir/fa/w/Yd1o_jSuMCw Cracking susceptibility https://www.seevid.ir/fa/w/Yd1o_jSuMCw Mechanisms https://www.seevid.ir/fa/w/Yd1o_jSuMCw Modeling https://www.seevid.ir/fa/w/Yd1o_jSuMCw Results https://www.seevid.ir/fa/w/Yd1o_jSuMCw Summary and conclusions During deep penetration laser welding of nickel alloys, interactions between composition and processing conditions can lead to the formation of defects. Inconel 740H, for example, has demonstrated a susceptibility to horizontal fusion zone cracking at locations between 70% and 80% of the weld depth during laser welding at powers above 5 kW. Coupling three-dimensional heat transfer, fluid flow, and stress modeling tools allowed the calculation of both the strain rate and stress normal to the solidification direction. In the Inconel 740H welds, cracks formed at locations where the strain rate and stress simultaneously reached critical levels. No cracking was observed in the Inconel 690 welds since the strain rate and stress did not simultaneously reach these critical levels.

• #science_technology
• #modeling
• #machinelearning
• #machine_learning
• #welding
• #additive_manufacturing
• #additivemanufacturing
• #3dprinting
• #3d_printing
• #manufacturing
• #heat_transfer
• #heattransfer
• #fluidflow
• #fluid_flow