9 March 2020Influence of crystal lattice orientation onto the formation of LIPSS, ripples, and cavities for iron and iron alloys in ultrashort pulse laser machining (Conference Presentation)
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Self-organized structures like cavities and LIPSS are often used to generate specials surface functionalities with ultrashort pulsed laser machining. For a better understanding of the formation of cavities and LIPSS we performed a layer by layer surface visualizations on single crystal iron with different specific lattice orientations. The experiments indicate that formation and grow rate of cavities depends on the orientation of the crystal lattice. Based on this information we have been able to predict the cavity formation for given fluence on an electrical steel sheet with non-oriented grains with an accuracy better than 90% by analyzing the lattice orientations of the grains by a previous EBSD measurement.
Stefan M. Remund,Silvan D. Gerber,Josef Zürcher,Markus Gafner, andBeat Neuenschwander
"Influence of crystal lattice orientation onto the formation of LIPSS, ripples, and cavities for iron and iron alloys in ultrashort pulse laser machining (Conference Presentation)", Proc. SPIE 11267, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXV, 112670K (9 March 2020); https://doi.org/10.1117/12.2548166
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Stefan M. Remund, Silvan D. Gerber, Josef Zürcher, Markus Gafner, Beat Neuenschwander, "Influence of crystal lattice orientation onto the formation of LIPSS, ripples, and cavities for iron and iron alloys in ultrashort pulse laser machining (Conference Presentation)," Proc. SPIE 11267, Laser Applications in Microelectronic and Optoelectronic Manufacturing (LAMOM) XXV, 112670K (9 March 2020); https://doi.org/10.1117/12.2548166