{"id":5665,"date":"2024-11-22T09:17:24","date_gmt":"2024-11-22T14:17:24","guid":{"rendered":"https:\/\/laser-ut.tecnar.com\/caracterisation-des-variations-de-la-microstructure-par-laser-ultrasons-pendant-et-apres-le-traitement-thermique-des-metaux\/"},"modified":"2024-11-22T13:17:25","modified_gmt":"2024-11-22T18:17:25","slug":"caracterisation-des-variations-de-la-microstructure-par-laser-ultrasons-pendant-et-apres-le-traitement-thermique-des-metaux","status":"publish","type":"post","link":"https:\/\/laser-ut.tecnar.com\/fr\/caracterisation-des-variations-de-la-microstructure-par-laser-ultrasons-pendant-et-apres-le-traitement-thermique-des-metaux\/","title":{"rendered":"Caract\u00e9risation des variations de la microstructure par laser-ultrasons pendant et apr\u00e8s le traitement thermique des m\u00e9taux"},"content":{"rendered":"

La propagation du son \u00e9tant li\u00e9e aux propri\u00e9t\u00e9s m\u00e9caniques d’un mat\u00e9riau, les ultrasons sont utilis\u00e9s depuis des d\u00e9cennies pour \u00e9tudier la microstructure des m\u00e9taux. Les ultrasons laser sont particuli\u00e8rement bien adapt\u00e9s \u00e0 ce type d’analyse dans les m\u00e9taux, car ils ne n\u00e9cessitent pas de contact avec le m\u00e9tal. Cela facilite l’observation des changements dans la microstructure caus\u00e9s par des param\u00e8tres externes tels que le traitement thermique.<\/p>\n

Dans un article r\u00e9cent, des chercheurs de RECENDT ont pr\u00e9sent\u00e9 deux \u00e9tudes int\u00e9ressantes d’une telle application de l’ultrasons laser \u00e0 l’\u00e9tude de l’acier : l’observation directe de la zone tremp\u00e9e dans les vilebrequins, et la mesure de l’effet de la temp\u00e9rature sur le coefficient de Poisson pour les bobines d’acier. Dans les deux cas, l’objectif est de \u00ab voir \u00bb l’impact du traitement thermique sur la microstructure de l’acier.<\/p>\n

Lien vers la publication<\/a><\/p>\n

Mots-cl\u00e9s : Ultrasons laser, ultrasons, m\u00e9tallurgie, trempe, acier<\/p>\n","protected":false},"excerpt":{"rendered":"

La propagation du son \u00e9tant li\u00e9e aux propri\u00e9t\u00e9s m\u00e9caniques d’un mat\u00e9riau, les ultrasons sont utilis\u00e9s depuis des d\u00e9cennies pour \u00e9tudier […]<\/p>\n

Lire la suite…<\/a><\/p>\n","protected":false},"author":2,"featured_media":4625,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[65,64],"tags":[],"acf":[],"yoast_head":"\nCaract\u00e9risation des variations de la microstructure par laser-ultrasons<\/title>\n<meta name=\"description\" content=\"Cet article d\u00e9montre le potentiel des ultrasons laser pour les applications de contr\u00f4le non destructif dans la production et le traitement de l'acier.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/laser-ut.tecnar.com\/fr\/caracterisation-des-variations-de-la-microstructure-par-laser-ultrasons-pendant-et-apres-le-traitement-thermique-des-metaux\/\" \/>\n<meta property=\"og:locale\" content=\"fr_FR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta 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