Cette \u00e9tude a examin\u00e9 les effets du pressage isostatique \u00e0 chaud (HIP) sur les performances en fatigue de l’alliage Ti-6Al-4V obtenu par fusion laser sur lit de poudre (L-PBF) dans le cadre d’essais de flexion \u00e0 4 points et d’essais uniaxiaux. Trois cycles HIP ont \u00e9t\u00e9 examin\u00e9s : standard, basse temp\u00e9rature\/haute pression (LTHP) et super b\u00eata. En outre, un groupe de traitement thermique recuit a \u00e9t\u00e9 incorpor\u00e9 pour comparer avec les groupes HIP. <\/p>\n
Les groupes de traitement HIP se sont comport\u00e9s de mani\u00e8re similaire lors des essais de flexion 4 points et des essais uniaxiaux, le LTHP obtenant un comportement sup\u00e9rieur en termes de dur\u00e9e de vie en fatigue, suivi par les groupes HIP standard et super b\u00eata. En outre, l’efficacit\u00e9 du traitement HIP pour r\u00e9duire les pores a donn\u00e9 de meilleurs r\u00e9sultats dans les \u00e9chantillons de flexion 4 points, conduisant \u00e0 peu de d\u00e9fauts en tant qu’initiateurs de fatigue, contrairement aux \u00e9chantillons uniaxiaux. <\/p>\n","protected":false},"featured_media":32252,"menu_order":0,"template":"","knowledge-center_materials":[553],"knowledge-center_processes":[363,580],"knowledge-center_language":[135],"knowledge-center_type":[625],"knowledge-center_industry":[347,350,356,244],"knowledge-center_topic":[235],"class_list":["post-37696","knowledge-center","type-knowledge-center","status-publish","has-post-thumbnail","hentry","knowledge-center_materials-titanium-alloy-fr","knowledge-center_processes-fabrication-additive","knowledge-center_processes-hip-et-traitement-thermique","knowledge-center_language-english","knowledge-center_type-publication-technique","knowledge-center_industry-aeronautique","knowledge-center_industry-defense","knowledge-center_industry-domaine-medical","knowledge-center_industry-space-fr","knowledge-center_topic-material-densification-fr"],"acf":[],"_links":{"self":[{"href":"https:\/\/quintustechnologies.com\/fr\/wp-json\/wp\/v2\/knowledge-center\/37696","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/quintustechnologies.com\/fr\/wp-json\/wp\/v2\/knowledge-center"}],"about":[{"href":"https:\/\/quintustechnologies.com\/fr\/wp-json\/wp\/v2\/types\/knowledge-center"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/quintustechnologies.com\/fr\/wp-json\/wp\/v2\/media\/32252"}],"wp:attachment":[{"href":"https:\/\/quintustechnologies.com\/fr\/wp-json\/wp\/v2\/media?parent=37696"}],"wp:term":[{"taxonomy":"knowledge-center_materials","embeddable":true,"href":"https:\/\/quintustechnologies.com\/fr\/wp-json\/wp\/v2\/knowledge-center_materials?post=37696"},{"taxonomy":"knowledge-center_processes","embeddable":true,"href":"https:\/\/quintustechnologies.com\/fr\/wp-json\/wp\/v2\/knowledge-center_processes?post=37696"},{"taxonomy":"knowledge-center_language","embeddable":true,"href":"https:\/\/quintustechnologies.com\/fr\/wp-json\/wp\/v2\/knowledge-center_language?post=37696"},{"taxonomy":"knowledge-center_type","embeddable":true,"href":"https:\/\/quintustechnologies.com\/fr\/wp-json\/wp\/v2\/knowledge-center_type?post=37696"},{"taxonomy":"knowledge-center_industry","embeddable":true,"href":"https:\/\/quintustechnologies.com\/fr\/wp-json\/wp\/v2\/knowledge-center_industry?post=37696"},{"taxonomy":"knowledge-center_topic","embeddable":true,"href":"https:\/\/quintustechnologies.com\/fr\/wp-json\/wp\/v2\/knowledge-center_topic?post=37696"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}