CIFICEN   24414
CENTRO DE INVESTIGACIONES EN FISICA E INGENIERIA DEL CENTRO DE LA PROVINCIA DE BUENOS AIRES
Unidad Ejecutora - UE
congresos y reuniones científicas
Título:
TEM study of the influence of pre-ageing at 100ºC on precipitation during artificial ageing in Al-Mg-Si
Autor/es:
V.CASTRO RIGLOS; V. NOSEDA GRAU; A. CUNIBERTI; A.TOLLEY; M. STIPCICH
Lugar:
Praga
Reunión:
Congreso; 18th International Microscopy Congress (IMC); 2014
Institución organizadora:
Czechoslovak Microscopy Society
Resumen:
Age hardenable Al-Mg-Si alloys are widely used as structural materials in automotive and architectural industries due to their low density, high formability and corrosion resistance (1). In these alloys, strengthening is due to the formation of needle-shaped b" precipitates, that is controlled by the time and temperature of artificial aging. However, it has been reported that room temperature (RT) pre-aging delays the formation of the strengthening precipitates (2), whereas by pre-aging at temperatures of 70ºC or 100ºC, this delay is reduced (3). The detailed process by which these effects take place is not yet fully understood. In this work, the influence of pre-aging at RT and at 100ºC on the subsequent precipitation process during artificial aging at 180ºC in an Al-Mg-Si alloy is addressed.