Influencia de parámetros térmicos dentro del proceso de fabricación sobre las propiedades mecánicas de la aleación Al 7075

Among precipitation-hard enable aluminum alloys, Al-Zn-Mg alloys have been the subject of much research because they are the alloys with the highest mechanical strength. The desirable mechanical properties of this class of alloys are due to structural heterogeneities on a nanoscale, which are formed...

Full description

Autores:
Medina Bejarano, Edwin Gilberto
Motta Melo, Mirian
Quintero Gamboa, Yina Faizully
Tipo de recurso:
Fecha de publicación:
2021
Institución:
Universidad Santo Tomás
Repositorio:
Universidad Santo Tomás
Idioma:
spa
OAI Identifier:
oai:repository.usta.edu.co:11634/41677
Acceso en línea:
http://revistas.ustatunja.edu.co/index.php/ingeniomagno/article/view/2312
http://hdl.handle.net/11634/41677
Palabra clave:
Brinell hardness
7075-T651 Alloy
Microstructures
Vickers microhardness
Solidification
Homogenization / Solubilization
Aging
Cooling rate
Heat treatment
Dureza brinell
Aleación 7075-T651
Microestructuras
Microdureza vickers
Solidificación
Homogenización
Solubilización
Envejecimiento
Tasa de enfriamiento
Tratamiento térmico
Dureza brinell
Liga 7075-T651
Microestruturas
Microdureza Vickers
Solidificação
Homogeneização/ Solubilização
Envelhecimento taxa resfriamento
Tratamento térmico
Rights
License
Derechos de autor 2021 Ingenio Magno
Description
Summary:Among precipitation-hard enable aluminum alloys, Al-Zn-Mg alloys have been the subject of much research because they are the alloys with the highest mechanical strength. The desirable mechanical properties of this class of alloys are due to structural heterogeneities on a nanoscale, which are formed at an intermediate stage in the evolution of the supersaturated solid solution towards an equilibrium structure, where excessive solute is secreted in the form of incoherent precipitates or Orewa’s mechanism [1]. This work aimed to evaluate the influence of the manufacturing processes: solidification, homogenization / solubilization and aging in the Al 7075 alloy using low cost characterization techniques, such as hardness and microhardness measures. For the conditions studied in this work, it can be concluded that the results of hardness and microhardness have substantial influence depending on the different conditions: crude solidification, solubilized / tempered in water and aged and as received (T6 51), confirming that they can serve as controls during the processing steps. It was also possible to predict the performance limit from the Vickers microhardness results for the different Al 7075 alloy processing conditions, with an error of 5% for the received condition (T6 51).