Improvements in Laser Cutting for Aerospace

Laser cutting has emerged as a transformative manufacturing process for aerospace applications, addressing long-standing concerns regarding material integrity and defect formation in critical alloys. This work presents systematic process development results for precision laser cutting of aerospace-grade materials including Ti-6Al-4V, Inconel 718, aluminum 6061-T6, and 316L stainless steel using 4-kW fiber laser systems.

Process parameter optimization focused on minimizing rejectable defects while meeting typical aerospace quality requirements. Metallurgical characterization demonstrated recast layer thickness of 11 µm on standard-gage Inconel 718, well below the 25 µm customer threshold. Cross-sectional analysis revealed controlled heat-affected zones, smooth cut surfaces, and absence of critical defects including cracks, excessive spatter, and oxide contamination across all material systems tested.

The optimized processes enable the production of parts with complex geometries with significantly reduced buy-to-fly ratios compared to conventional machining approaches. Demonstrated applications include thermal protection panels, turbine blade components, and precision trimming of formed castings. Process repeatability trials confirmed consistent edge quality and dimensional tolerances suitable for production implementation. Material utilization improvements and reduced post-processing requirements contribute to enhanced sustainability metrics throughout the manufacturing workflow.

These results establish laser cutting as a viable production technology for aerospace metallic components, providing manufacturers with validated parameters and quality benchmarks for implementation. The combination of precision, versatility, and material efficiency positions laser processing as a key enabling technology for next-generation aerospace manufacturing.