{"id":14399,"date":"2001-12-12T00:00:00","date_gmt":"2001-12-12T00:00:00","guid":{"rendered":"https:\/\/www.deberes.net\/tesis\/sin-categoria\/caracterizacion-y-optimizacion-tecnologica-de-un-acero-hipereutectoide\/"},"modified":"2001-12-12T00:00:00","modified_gmt":"2001-12-12T00:00:00","slug":"caracterizacion-y-optimizacion-tecnologica-de-un-acero-hipereutectoide","status":"publish","type":"post","link":"https:\/\/www.deberes.net\/tesis\/fisica\/caracterizacion-y-optimizacion-tecnologica-de-un-acero-hipereutectoide\/","title":{"rendered":"Caracterizaci\u00f3n y optimizaci\u00f3n tecnol\u00f3gica de un acero hipereutectoide"},"content":{"rendered":"<h2>Tesis doctoral de <strong> Alberto Fern\u00e1ndez Vicente <\/strong><\/h2>\n<p>La presente tesis comprende el estudio de la influencia, procesado y tenacidad a la fractura de dos aceros de ultraalto contenido en carbono uac, con un contendio en carbono de 1,3% (uac-1,3c) y 1,5% (uac-1,5c). en primer lugar se ha estudiado el comportamiento en fluencia a alta temperatura y altas velocidades de deformaci\u00f3n del acero uac-1,3c. Para ello, se han llevado a cabo ensayos de torsi\u00f3n en el rango de velocidades de deformaci\u00f3n de 2 a 26 s-1 y en el intervalo de temperaturas de 900 a 1200\u00c2\u00bac.  se han determinado los mecanismos de deformaci\u00f3n operantes en los estados de deformaci\u00f3n de m\u00e1ximo. Se han obtenido que, en el estado de m\u00e1ximo, el acero uac-1,3c deforma de acuerdo con un mecanismo de movimiento de dislocaciones controlado por la difusi\u00f3n de vacantes a trav\u00e9s de la red. en los estados de &#8212;&#8211; hay dos mecanismos controlantes de la deformaci\u00f3n: deslizamiento de fronteras de grano controlado por la difusi\u00f3n de vacantes a lo largo de las dislocaciones y movimiento de dislocaciones controlado por la difusi\u00f3n de vacantes a trav\u00e9s de la red. En segundo lugar se han dise\u00f1ado dos rutas (a y b) de procesado de los aceros uac-1,3c y uac-1,5c, para la obtenci\u00f3n de una microestructura de carburos esferoidales de peque\u00f1o tama\u00f1o embebidos en una matriz de ferrita. Ambas rutas consisten en una etapa de forja y una etapa de recocido a 780\u00c2\u00bac. La etapa de forja de las rutas a y b se llev\u00f3 a cabo en los intervalos de temperatura desde 950 a 800\u00c2\u00bac y desde 850 a 750\u00c2\u00bac, respectivamente.  en general, en el acero uac-1,5c se ha obtendio una microestructura de carburos esferoidales de elevado tama\u00f1o (&gt; 5 um) independientemente de la ruta empleada, mientras que en el acero uac-1,3c el tama\u00f1o menor de carburo se ha obtendio por medio de la ruta b (&lt; 1,5 um). Posteriormente, los materiales procesados mediante la ruta b se han tratado t\u00e9rmicamente a temperaturas en el rango de 770 a 990\u00c2\u00bac y se han medido los par\u00e1metros<\/p>\n<p>&nbsp;<\/p>\n<h3>Datos acad\u00e9micos de la tesis doctoral \u00ab<strong>Caracterizaci\u00f3n y optimizaci\u00f3n tecnol\u00f3gica de un acero hipereutectoide<\/strong>\u00ab<\/h3>\n<ul>\n<li><strong>T\u00edtulo de la tesis:<\/strong>\u00a0 Caracterizaci\u00f3n y optimizaci\u00f3n tecnol\u00f3gica de un acero hipereutectoide <\/li>\n<li><strong>Autor:<\/strong>\u00a0 Alberto Fern\u00e1ndez Vicente <\/li>\n<li><strong>Universidad:<\/strong>\u00a0 Complutense de Madrid<\/li>\n<li><strong>Fecha de lectura de la tesis:<\/strong>\u00a0 12\/12\/2001<\/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>F\u00e9lix Pe\u00f1alba D\u00edaz<\/li>\n<\/ul>\n<\/li>\n<li><strong>Tribunal<\/strong>\n<ul>\n<li>Presidente del tribunal:  Llopis pla Jos\u00e9 federico <\/li>\n<li> Jimen\u00e9z rodr\u00edguez Jos\u00e9 Antonio (vocal)<\/li>\n<li>Jos\u00e9 Fern\u00e1ndez s\u00e1ez (vocal)<\/li>\n<li>arturo Dom\u00ednguez rodr\u00edguez (vocal)<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n<p>&nbsp;<\/p>\n","protected":false},"excerpt":{"rendered":"<p>Tesis doctoral de Alberto Fern\u00e1ndez Vicente La presente tesis comprende el estudio de la influencia, procesado y tenacidad a la 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