This study compares the conventional T6 (“solution-quenching-aging”) treatment with an innovative one, in terms of high temperature response of the EN AW-2618A alloy, containing 0.12wt% Zr. The new treatment is aimed to stimulate Zr-based precipitates with optimal size, shape and distribution, in order to completely take advantage of Zr anti-recrystallization effect. To assess alloy's thermal stability, samples subjected to both heat treatments were soaked at 250 °C, up to 50h. Hardness measurements, microstructural characterization and high temperature compression tests have been carried out, giving evidence of significant improvements connected to controlled formation of Zr-based precipitates
Balducci, E., Ceschini, L., Morri, A., Morri, A., Lundberg, M.D.S., Arnberg, L. (2015). High temperature behavior of the EN AW-2618A piston alloy containing 0.12wt% Zr: influence of heat treatments. MATERIALS TODAY: PROCEEDINGS, 2(10, Part A), 5037-5044 [10.1016/j.matpr.2015.10.094].
High temperature behavior of the EN AW-2618A piston alloy containing 0.12wt% Zr: influence of heat treatments
BALDUCCI, ELEONORA;CESCHINI, LORELLA;MORRI, ALESSANDRO;MORRI, ANDREA;
2015
Abstract
This study compares the conventional T6 (“solution-quenching-aging”) treatment with an innovative one, in terms of high temperature response of the EN AW-2618A alloy, containing 0.12wt% Zr. The new treatment is aimed to stimulate Zr-based precipitates with optimal size, shape and distribution, in order to completely take advantage of Zr anti-recrystallization effect. To assess alloy's thermal stability, samples subjected to both heat treatments were soaked at 250 °C, up to 50h. Hardness measurements, microstructural characterization and high temperature compression tests have been carried out, giving evidence of significant improvements connected to controlled formation of Zr-based precipitatesI documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
