NDLI: Effets thermiques dus à l'interaction laser-matière dans les métaux en régime femtoseconde

Content Provider	Semantic Scholar
Author	Valette, Stéphane
Copyright Year	2003
Abstract	L'objet de ce travail de these est l'etude des effets thermiques dus a l'interaction laser-matiere dans le cas de materiaux metalliques irradies avec des impulsions femtosecondes. Deux approches sont developpees. La premiere utilise un traitement numerique a deux dimensions du Modele a Deux Temperatures (MDT). Apres definition d'une Zone Affectee Thermiquement (ZAT) sur la base d'arguments de physique des materiaux, l'etendue de celle-ci est estimee par simulation numerique dans la direction perpendiculaire au faisceau laser. La deuxieme approche est de type experimentale. Les techniques de microscopie electronique en transmission et a balayage sont utilisees pour mesurer l'evolution des microstructures en bordure de la zone irradiee. Les regimes femtoseconde et nanoseconde sont compares dans l'ensemble des resultats de ce travail.
File Format	PDF HTM / HTML
Alternate Webpage(s)	https://tel.archives-ouvertes.fr/tel-00004642/document
Language	English
Access Restriction	Open
Content Type	Text
Resource Type	Article

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