{"id":116141,"date":"2022-05-10T07:32:20","date_gmt":"2022-05-10T06:32:20","guid":{"rendered":"https:\/\/material-properties.org\/quelle-est-la-durete-des-alliages-de-magnesium-definition\/"},"modified":"2022-05-16T16:24:12","modified_gmt":"2022-05-16T15:24:12","slug":"quelle-est-la-durete-des-alliages-de-magnesium-definition","status":"publish","type":"post","link":"https:\/\/material-properties.org\/fr\/quelle-est-la-durete-des-alliages-de-magnesium-definition\/","title":{"rendered":"Quelle est la duret\u00e9 des alliages de magn\u00e9sium &#8211; D\u00e9finition"},"content":{"rendered":"<p><span><div class=\"su-quote su-quote-style-default\"><div class=\"su-quote-inner su-u-clearfix su-u-trim\">Duret\u00e9 des alliages de magn\u00e9sium.\u00a0La duret\u00e9 Brinell d&rsquo;Elektron 21 &#8211; UNS M12310 est d&rsquo;environ 70 HB.\u00a0L&rsquo;aluminium, le zinc, le zirconium et le thorium favorisent le durcissement par pr\u00e9cipitation<\/div><\/div><\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/span><\/p>\n<p><span><div  class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><strong><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-image-min.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignright size-medium wp-image-29738\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/07\/magnesium-alloy-elektron-image-min-300x300.png\" alt=\"Alliages de magn\u00e9sium\" width=\"300\" height=\"300\" \/><\/a><span>Les alliages de magn\u00e9sium<\/span><\/strong><span>\u00a0sont des m\u00e9langes de magn\u00e9sium et d&rsquo;autres m\u00e9taux d&rsquo;alliage, g\u00e9n\u00e9ralement de l&rsquo;aluminium, du zinc, du silicium, du mangan\u00e8se, du cuivre et du zirconium.\u00a0\u00c9tant donn\u00e9 que la caract\u00e9ristique la plus remarquable du magn\u00e9sium est sa\u00a0<\/span><strong><span>densit\u00e9, 1,7 g\/cm<\/span><sup><span>3<\/span><\/sup><\/strong><span>, ses alliages sont utilis\u00e9s lorsque la l\u00e9g\u00e8ret\u00e9 est une consid\u00e9ration importante (par exemple, dans les composants d&rsquo;avions).\u00a0Le magn\u00e9sium a le\u00a0<\/span><strong><span>point de fusion le plus bas <\/span><\/strong><span>(923 K (1202 \u00b0F)) de tous les m\u00e9taux alcalino-terreux. Le magn\u00e9sium pur a une structure cristalline HCP, est relativement mou et a un faible module \u00e9lastique: 45 GPa. Les alliages de magn\u00e9sium ont \u00e9galement une structure de r\u00e9seau hexagonale, ce qui affecte les propri\u00e9t\u00e9s fondamentales de ces alliages.\u00a0\u00c0 temp\u00e9rature ambiante, le magn\u00e9sium et ses alliages sont difficiles \u00e0 travailler \u00e0 froid en raison du fait que la d\u00e9formation plastique du r\u00e9seau hexagonal est plus compliqu\u00e9e que dans les m\u00e9taux \u00e0 r\u00e9seau cubique comme l&rsquo;aluminium, le cuivre et l&rsquo;acier.\u00a0Par cons\u00e9quent, les alliages de magn\u00e9sium sont g\u00e9n\u00e9ralement utilis\u00e9s comme\u00a0<\/span><strong><span>alliages coul\u00e9s<\/span><\/strong><span>.\u00a0Malgr\u00e9 la nature r\u00e9active de la poudre de magn\u00e9sium pur, le magn\u00e9sium m\u00e9tal et ses alliages ont une bonne r\u00e9sistance \u00e0 la corrosion.<\/span><\/p>\n<p><span>L&rsquo;aluminium est l&rsquo;\u00e9l\u00e9ment d&rsquo;alliage le plus courant.\u00a0L&rsquo;aluminium, le zinc, le zirconium et le thorium favorisent le durcissement par pr\u00e9cipitation: le mangan\u00e8se am\u00e9liore la r\u00e9sistance \u00e0 la corrosion; et l&rsquo;\u00e9tain am\u00e9liore la coulabilit\u00e9.<\/span><\/p>\n<h2><span>Duret\u00e9 des alliages de magn\u00e9sium<\/span><\/h2>\n<p><span>La duret\u00e9 Brinell d&rsquo;\u00a0<\/span><strong><span>Elektron 21 &#8211; UNS M12310<\/span><\/strong><span>\u00a0est d&rsquo;environ 70 HB.<\/span><\/p>\n<p><a href=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/table-brinell-hardness-numbers.png\"><img decoding=\"async\" loading=\"lazy\" class=\"alignright size-full wp-image-28044\" src=\"https:\/\/material-properties.org\/wp-content\/uploads\/2020\/01\/table-brinell-hardness-numbers.png\" alt=\"Num\u00e9ro de duret\u00e9 Brinell\" width=\"288\" height=\"297\" \/><\/a><\/p>\n<p><strong><span>Le test de duret\u00e9 Rockwell<\/span><\/strong><span> est l&rsquo;un des tests de duret\u00e9 par indentation les plus courants, qui a \u00e9t\u00e9 d\u00e9velopp\u00e9 pour les tests de duret\u00e9.\u00a0Contrairement au test Brinell, le testeur Rockwell mesure la profondeur de p\u00e9n\u00e9tration d&rsquo;un p\u00e9n\u00e9trateur sous une charge importante (charge majeure) par rapport \u00e0 la p\u00e9n\u00e9tration faite par une pr\u00e9charge (charge mineure).\u00a0La charge mineure \u00e9tablit la position z\u00e9ro.\u00a0La charge majeure est appliqu\u00e9e, puis retir\u00e9e tout en maintenant la charge mineure.\u00a0La diff\u00e9rence entre la profondeur de p\u00e9n\u00e9tration avant et apr\u00e8s l&rsquo;application de la charge principale est utilis\u00e9e pour calculer le <\/span><strong><span>nombre de duret\u00e9 Rockwell<\/span><\/strong><span>.\u00a0C&rsquo;est-\u00e0-dire que la profondeur de p\u00e9n\u00e9tration et la duret\u00e9 sont inversement proportionnelles.\u00a0Le principal avantage de la duret\u00e9 Rockwell est sa capacit\u00e9 \u00e0 <\/span><strong><span>afficher directement les valeurs de duret\u00e9<\/span><\/strong><span>.\u00a0Le r\u00e9sultat est un nombre sans dimension not\u00e9 <\/span><strong><span>HRA, HRB, HRC<\/span><\/strong><span>, etc., o\u00f9 la derni\u00e8re lettre est l&rsquo;\u00e9chelle Rockwell respective.<\/span><\/p>\n<p><span>Le test Rockwell C est r\u00e9alis\u00e9 avec un p\u00e9n\u00e9trateur Brale (<\/span><strong><span>c\u00f4ne diamant 120\u00b0<\/span><\/strong><span>) et une charge majeure de 150kg.<\/span><\/p>\n<p><span><\/span><\/p><\/div><\/div><\/span><\/p>\n<p><span><div  class=\"lgc-column lgc-grid-parent lgc-grid-100 lgc-tablet-grid-100 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><span><div class=\"su-accordion su-u-trim\"><div class=\"su-spoiler su-spoiler-style-default su-spoiler-icon-plus\" data-scroll-offset=\"0\" data-anchor-in-url=\"no\"><div class=\"su-spoiler-title\" tabindex=\"0\" role=\"button\"><span class=\"su-spoiler-icon\"><\/span>R\u00e9f\u00e9rences :<\/div><div class=\"su-spoiler-content su-u-clearfix su-u-trim\">Science des mat\u00e9riaux:<\/div><\/div><\/div><\/span><\/p>\n<p><span>D\u00e9partement am\u00e9ricain de l&rsquo;\u00e9nergie, science des mat\u00e9riaux.\u00a0DOE Fundamentals Handbook, Volume 1 and 2. Janvier 1993.<\/span><br \/>\n<span>US Department of Energy, Material Science.\u00a0DOE Fundamentals Handbook, Volume 2 et 2. Janvier 1993.<\/span><br \/>\n<span>William D. Callister, David G. Rethwisch.\u00a0Science et g\u00e9nie des mat\u00e9riaux : une introduction 9e \u00e9dition, Wiley ;\u00a09 \u00e9dition (4 d\u00e9cembre 2013), ISBN-13\u00a0: 978-1118324578.<\/span><br \/>\n<span>En ligneEberhart, Mark (2003).\u00a0Pourquoi les choses se cassent\u00a0: Comprendre le monde par la mani\u00e8re dont il se d\u00e9compose.\u00a0Harmonie.\u00a0ISBN 978-1-4000-4760-4.<\/span><br \/>\n<span>Gaskell, David R. (1995).\u00a0Introduction \u00e0 la thermodynamique des mat\u00e9riaux (4e \u00e9d.).\u00a0\u00c9ditions Taylor et Francis.\u00a0ISBN 978-1-56032-992-3.<\/span><br \/>\n<span>Gonz\u00e1lez-Vi\u00f1as, W. &amp; Mancini, HL (2004).\u00a0Une introduction \u00e0 la science des mat\u00e9riaux.\u00a0Presse universitaire de Princeton.\u00a0ISBN 978-0-691-07097-1.<\/span><br \/>\n<span>Ashby, Michael;\u00a0Hugh Shercliff;\u00a0David Cebon (2007).\u00a0Mat\u00e9riaux: ing\u00e9nierie, science, traitement et conception (1\u00e8re \u00e9d.).\u00a0Butterworth-Heinemann.\u00a0ISBN 978-0-7506-8391-3.<\/span><br \/>\n<span>JR Lamarsh, AJ Baratta, Introduction au g\u00e9nie nucl\u00e9aire, 3e \u00e9d., Prentice-Hall, 2001, ISBN : 0-201-82498-1.<\/span><br \/>\n<span><\/span><\/p><\/div><\/div><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><div class=\"su-divider su-divider-style-default\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\"><\/div><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\">\n<p><span>Voir ci-dessus:<\/span><br \/>\n<span>Alliages de magn\u00e9sium<a href=\"https:\/\/www.nuclear-power.com\/nuclear-engineering\/metals-what-are-metals\/alloys-composition-properties-of-metal-alloys\/magnesium-alloys\/ \" class=\"su-button su-button-style-plat\" style=\"color:#606060;background-color:#ffffff;border-color:#cccccc;border-radius:10px;-moz-border-radius:10px;-webkit-border-radius:10px\" target=\"_self\"><span style=\"color:#606060;padding:7px 20px;font-size:16px;line-height:24px;border-color:#ffffff;border-radius:10px;-moz-border-radius:10px;-webkit-border-radius:10px;text-shadow:0px 0px 0px #000000;-moz-text-shadow:0px 0px 0px #000000;-webkit-text-shadow:0px 0px 0px #000000\"><img src=\"ic\u00f4ne : lien\" alt=\"\" style=\"width:24px;height:24px\" \/> <\/span><\/a><\/span><\/p><\/div><\/div><div  class=\"lgc-column lgc-grid-parent lgc-grid-33 lgc-tablet-grid-33 lgc-mobile-grid-100 lgc-equal-heights \"><div  class=\"inside-grid-column\"><\/div><\/div><\/span><\/p>\n<p><span><div class=\"su-divider su-divider-style-dotted\" style=\"margin:15px 0;border-width:2px;border-color:#999999\"><\/div><\/span><\/p>\n<p><span>Nous esp\u00e9rons que cet article,\u00a0<\/span><strong><span>Duret\u00e9 des alliages de magn\u00e9sium<\/span><\/strong><span>, vous aidera.\u00a0Si oui,\u00a0<\/span><strong><span>donnez-nous un like<\/span><\/strong><span>\u00a0dans la barre lat\u00e9rale.\u00a0L&rsquo;objectif principal de ce site Web est d&rsquo;aider le public \u00e0 apprendre des informations int\u00e9ressantes et importantes sur les mat\u00e9riaux et leurs propri\u00e9t\u00e9s.<\/span><\/p>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Nous esp\u00e9rons que cet article,\u00a0Duret\u00e9 des alliages de magn\u00e9sium, vous aidera.\u00a0Si oui,\u00a0donnez-nous un like\u00a0dans la barre lat\u00e9rale.\u00a0L&rsquo;objectif principal de ce site Web est d&rsquo;aider le public \u00e0 apprendre des informations int\u00e9ressantes et importantes sur les mat\u00e9riaux et leurs propri\u00e9t\u00e9s. &nbsp;<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[53],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v21.2 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Qu&#039;est-ce que la duret\u00e9 des alliages de magn\u00e9sium - D\u00e9finition | Propri\u00e9t\u00e9s mat\u00e9rielles<\/title>\n<meta name=\"description\" content=\"Duret\u00e9 des alliages de magn\u00e9sium. 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