{"id":22223,"date":"2025-06-11T16:00:42","date_gmt":"2025-06-11T14:00:42","guid":{"rendered":"https:\/\/lncmi.cnrs.fr\/non-classifiee\/development-of-high-strength-conductors-project-sigma\/"},"modified":"2025-06-11T16:49:07","modified_gmt":"2025-06-11T14:49:07","slug":"development-of-high-strength-conductors-project-sigma","status":"publish","type":"post","link":"https:\/\/lncmi.cnrs.fr\/en\/partners\/projects-and-funding\/development-of-high-strength-conductors-project-sigma\/","title":{"rendered":"SIgMA &#8211; Development of reinforced conductors"},"content":{"rendered":"\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"has-text-align-left wp-block-paragraph\">The SIgMA consortium, coordinated by LNCMI, is funded by ANR during 54 months. It is composed of one industrial partner, I-Cube Research\/Bmax and four academic laboratories CNRS-LNCMI, UP-Pprime, UT-CIRIMAT, UBFC-ICB-LERMPS. Each partner provides complementary expertise in different areas: CIRIMAT and LERMPS in powder metallurgy process (powder synthesis, consolidation by Spark Plasma Sintering, consolidation by cold-spray); LNCMI in severe plastic deformation process, macroscopic characterization in static conditions and magnet testing in DC and pulsed configuration; Pprime in fine microstructural and micromechanical characterization; I-Cube Research\/Bmax in high stress and high strain rate environments influence on metallic materials and industrial magnet testing. <br\/>The SIgMA project aims at designing and preparing composite nanostructured copper\/silver conductors with high electrical conductivity (&gt; 90% IACS) and high mechanical strength (&gt; 1 GPa). The approach relies on the composite and nanostructuration effects with the unique combination of powder metallurgy process (cold spray, spark plasma sintering) and severe plastic deformation (wire-drawing). Many materials and process parameters, to be identified, are critical to tailor the micro and nanoscale design that will ultimately permit to obtain the required properties. Properties\/microstructure\/interface relationships is established. Ageing behavior and lifetime under extreme conditions (severe mechanical constraints and high strain rate) is investigated. Conductors are prepared as a demonstrator for magnetoforming tools as well as for high magnetic fields (&gt; 100 Tesla). In addition, SIgMA will establish a strong public\/private partnership with a possible transfer of technology.        <\/p>\n\n\n\n<p class=\"has-text-align-left wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Contact : Florence Lecouturier-Dupouy, S. Tardieu<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n<\/div>\n\n\n\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<p class=\"wp-block-paragraph\"><\/p>\n\n\n\n<div class=\"wp-block-columns is-layout-flex wp-container-core-columns-is-layout-8f761849 wp-block-columns-is-layout-flex\">\n<div class=\"wp-block-column is-layout-flow wp-block-column-is-layout-flow\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"875\" src=\"https:\/\/lncmi.cnrs.fr\/wp-content\/uploads\/2025\/06\/SIgMA-1024x875.png\" alt=\"\" class=\"wp-image-22220\" srcset=\"https:\/\/lncmi.cnrs.fr\/wp-content\/uploads\/2025\/06\/SIgMA-1024x875.png 1024w, https:\/\/lncmi.cnrs.fr\/wp-content\/uploads\/2025\/06\/SIgMA-980x837.png 980w, https:\/\/lncmi.cnrs.fr\/wp-content\/uploads\/2025\/06\/SIgMA-480x410.png 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1024px, 100vw\" \/><\/figure>\n<\/div>\n<\/div>\n<\/div>\n<\/div>\n","protected":false},"excerpt":{"rendered":"<p>The SIgMA consortium, coordinated by LNCMI, is funded by ANR during 54 months. It is composed of one industrial partner, I-Cube Research\/Bmax and four academic laboratories CNRS-LNCMI, UP-Pprime, UT-CIRIMAT, UBFC-ICB-LERMPS. [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":22221,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":"","_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_memberships_contains_paid_content":false,"footnotes":""},"categories":[6228,6229],"tags":[],"post_folder":[],"class_list":["post-22223","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-partners","category-projects-and-funding"],"jetpack_featured_media_url":"https:\/\/lncmi.cnrs.fr\/wp-content\/uploads\/2025\/06\/SIgMA.png","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/posts\/22223","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/comments?post=22223"}],"version-history":[{"count":0,"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/posts\/22223\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/media\/22221"}],"wp:attachment":[{"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/media?parent=22223"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/categories?post=22223"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/tags?post=22223"},{"taxonomy":"post_folder","embeddable":true,"href":"https:\/\/lncmi.cnrs.fr\/en\/wp-json\/wp\/v2\/post_folder?post=22223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}