Effect of Ni additions and hot deformation on precipitation behavior and hardness in AleSieMg aged alloys

Additions of 1e2 Ni (wt. %) and hot deformation on the microstructure and hardness of A356 aged alloy were studied. The results show that the addition of this element generates the formation of Ni31Si12 and NiFe phases with high thermal stability. In addition, the presence of Ni into the Al matrix a...

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Detalles Bibliográficos
Autores: Hansel Medrano Prieto, Hector Camacho-Montes, Carlos Gamaliel Garay Reyes, J.M. Mendoza Duarte, J.C. Guia Tello, R.A. Ochoa Gamboa, C.E. Ornelas Gutierrez, G Rodriguez Cabriales, M.C. Maldonado Orozco, Roberto Martinez Sanchez, Javier Servando Castro Carmona
Tipo de recurso: artículo
Estado:Versión publicada
Fecha de publicación:2020
País:México
Institución:Universidad Autónoma de Ciudad Juárez
Repositorio:Repositorio Institucional de la Universidad Autónoma de Ciudad Juárez
OAI Identifier:oai:uacj.mx:oai:cathi.uacj.mx:20.500.11961ir-15613
Acceso en línea:https://www.journals.elsevier.com/journal-of-alloys-and-compounds
Access Level:acceso abierto
Palabra clave:Aluminum, Hot plastic deformation, Ni addition, Precipitation hardening, A356 alloys
info:eu-repo/classification/cti/7
Descripción
Sumario:Additions of 1e2 Ni (wt. %) and hot deformation on the microstructure and hardness of A356 aged alloy were studied. The results show that the addition of this element generates the formation of Ni31Si12 and NiFe phases with high thermal stability. In addition, the presence of Ni into the Al matrix and precipitates of the second phase affect the precipitation kinetics, transformation sequence, growth rate, and slow loss of hardness in the system after reaching the maximum values. For example, the Ni additions contribute to generating the coexistence of b" precipitate and GP-I zones. Of all the strengthening mechanisms present, hardening by precipitation is the most influential in the hardness

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