{"id":67823,"date":"2008-05-11T00:00:00","date_gmt":"2008-05-11T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/estudio-de-transiciones-de-fase-estructurales-en-aleaciones-metalicas-mediante-tecnicas-acusticas-y-mecanicas\/"},"modified":"2008-05-11T00:00:00","modified_gmt":"2008-05-11T00:00:00","slug":"estudio-de-transiciones-de-fase-estructurales-en-aleaciones-metalicas-mediante-tecnicas-acusticas-y-mecanicas","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/barcelona\/estudio-de-transiciones-de-fase-estructurales-en-aleaciones-metalicas-mediante-tecnicas-acusticas-y-mecanicas\/","title":{"rendered":"Estudio de transiciones de fase estructurales en aleaciones met\u00e1licas mediante t\u00e9cnicas ac\u00fasticas y mec\u00e1nicas"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Erell Bonnot <\/strong><\/h2>\n<p>Las aleaciones con memoria de forma tienen propiedades particulares de superelasticidad y memoria de forma gracias a una transformaci\u00f3n de fase estructural de primer orden llamada transici\u00f3n martens\u00edtica que ocurre variando la temperatura o el esfuerzo aplicado. La t\u00e9cnica de emisi\u00f3n ac\u00fastica permite estudiar esta transici\u00f3n, a partir de la detecci\u00f3n de las ondas el\u00e1sticas generadas durante el mecanismo de cizalla sin difusi\u00f3n involucrado. en esta tesis se han estudiado distintas caracter\u00edsticas de la transici\u00f3n martens\u00edtica como la reproducibilidad a trav\u00e9s del ciclado en aleaciones de cu-zn-al, el car\u00e1cter isot\u00e9rmico de la transici\u00f3n en aleaciones de ni-al y au-cd o la comparaci\u00f3n entre una muestra monocristalina y policristalina de fe-pd, mediante la medida de la emisi\u00f3n ac\u00fastica generada induciendo la transici\u00f3n por temperatura. induciendo la transici\u00f3n por aplicaci\u00f3n de un esfuerzo y midiendo simult\u00e1neamente la emisi\u00f3n ac\u00fastica, se ha caracterizado la propagaci\u00f3n de la interfase y la proporcionalidad entre la velocidad de \u00e9sta, la actividad ac\u00fastica y la energ\u00eda disipada. finalmente, comparando ensayos mec\u00e1nicos realizados controlando el esfuerzo aplicado y controlando la elongaci\u00f3n de la muestra, se ha estudiado el efecto de la variable de control sobre la hist\u00e9resis, se ha determinado el efecto del ritmo sobre las caracter\u00edsticas de la transici\u00f3n y se ha caracterizado el efecto elastocal\u00f3rico inducido por aplicaci\u00f3n de un esfuerzo externo.<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Estudio de transiciones de fase estructurales en aleaciones met\u00e1licas mediante t\u00e9cnicas ac\u00fasticas y mec\u00e1nicas<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Estudio de transiciones de fase estructurales en aleaciones met\u00e1licas mediante t\u00e9cnicas ac\u00fasticas y mec\u00e1nicas <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Erell Bonnot <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Barcelona<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 05\/11\/2008<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n<h3>Direcci\u00f3n y tribunal<\/h3>\n<ul>\n<li><strong>Director de la tesis<\/strong>\n<ul>\n<li>Antoni Planes Vila<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal: lLuis Ma\u00f1osa carrera <\/li>\n<li>Jos\u00e9 Ricardo romero (vocal)<\/li>\n<li>joan Font ferrer (vocal)<\/li>\n<li>michel Morin (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Erell Bonnot Las aleaciones con memoria de forma tienen propiedades particulares de superelasticidad y memoria de forma [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center 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