{"id":28568,"date":"2011-11-01T23:40:25","date_gmt":"2011-11-01T22:40:25","guid":{"rendered":"https:\/\/icmsva.vallealto.es\/?articulos_sci=influence-of-al2o3-reinforcement-on-precipitation-kinetic-of-cu-cr-nanocomposite"},"modified":"2026-04-14T11:49:32","modified_gmt":"2026-04-14T09:49:32","slug":"influence-of-al2o3-reinforcement-on-precipitation-kinetic-of-cu-cr-nanocomposite","status":"publish","type":"articulos_sci","link":"https:\/\/icmsva.vallealto.es\/?articulos_sci=influence-of-al2o3-reinforcement-on-precipitation-kinetic-of-cu-cr-nanocomposite","title":{"rendered":"Influence of Al2O3 reinforcement on precipitation kinetic of Cu\u2013Cr nanocomposite"},"content":{"rendered":"<figure><img decoding=\"async\" src=\"https:\/\/icmsva.vallealto.es\/wp-content\/uploads\/2011\/11\/Influence-of-Al2O3-reinforcement-on-precipitation-1.png\" alt=\"Influence of Al2O3 reinforcement on precipitation kinetic of Cu\u2013Cr nanocomposite\" \/><\/figure>\n<p>In this paper, the kinetic of precipitation process in mechanically alloyed Cu-1\u00a0wt.% Cr and Cu-1\u00a0wt.% Cr\/3\u00a0wt.% Al<sub>2<\/sub>O<sub>3<\/sub> solid solution was compared using differential scanning calorimetry (DSC), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The ageing kinetics in Cu\u2013Cr and Cu\u2013Cr\/Al<sub>2<\/sub>O<sub>3<\/sub> can be described using Johnson\u2013Mehl\u2013Avrami (JMA) and Sestak\u2013Berggren (SB) models, respectively. These different behaviors have been discussed in details. It was found that in presence of Al<sub>2<\/sub>O<sub>3<\/sub> reinforcement, the ageing activation energy is decreased and the overall ageing process is accelerated. This behavior is probably due to higher dislocation density previously obtained during ball milling and Al<sub>2<\/sub>O<sub>3<\/sub>\u2013Cu interface. TEM observations confirm that Al<sub>2<\/sub>O<sub>3<\/sub>\u2013Cu interface and structural defects act as a primary and secondary nucleation sites, respectively.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>In this paper, the kinetic of precipitation process in mechanically alloyed Cu-1\u00a0wt.% Cr and Cu-1\u00a0wt.% Cr\/3\u00a0wt.% Al2O3 solid solution was compared using differential scanning calorimetry (DSC), X-ray diffraction (XRD) and transmission electron microscopy (TEM). The ageing kinetics in Cu\u2013Cr and Cu\u2013Cr\/Al2O3 can be described using Johnson\u2013Mehl\u2013Avrami (JMA) and Sestak\u2013Berggren (SB) models, respectively. These different behaviors&hellip;<\/p>\n","protected":false},"featured_media":28575,"template":"","autores":[],"grupos_de_investigacion":[136],"revistas":[2456],"anos":[894],"class_list":["post-28568","articulos_sci","type-articulos_sci","status-publish","has-post-thumbnail","hentry","grupos_de_investigacion-quimica-de-superficies-y-catalisis","revistas-thermochimica-acta","anos-894","description-off"],"acf":[],"_links":{"self":[{"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/articulos_sci\/28568","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/articulos_sci"}],"about":[{"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/types\/articulos_sci"}],"version-history":[{"count":1,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/articulos_sci\/28568\/revisions"}],"predecessor-version":[{"id":28576,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/articulos_sci\/28568\/revisions\/28576"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=\/wp\/v2\/media\/28575"}],"wp:attachment":[{"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=28568"}],"wp:term":[{"taxonomy":"autores","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fautores&post=28568"},{"taxonomy":"grupos_de_investigacion","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fgrupos_de_investigacion&post=28568"},{"taxonomy":"revistas","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Frevistas&post=28568"},{"taxonomy":"anos","embeddable":true,"href":"https:\/\/icmsva.vallealto.es\/index.php?rest_route=%2Fwp%2Fv2%2Fanos&post=28568"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}