Effect of cooling rate on ignition point of AZ91D–0.98 wt.% Ce magnesium alloy

Abstract Influence of the cooling rate, K p , on the ignition point of AZ91D–0.98 wt.% Ce magnesium alloy is investigated. To the AZ91D–0.98 wt.% Ce magnesium alloy, the cooling rate has a great effect on its microstructure and phase. XRD shows that it mainly consists of α-Mg, Mg 17 Al 12 and Ce phases with rapid solidification treatment, while α-Mg, Mg 17 Al 12 and Al 11 Ce 3 phases are with air cooling and furnace cooling treatments. Compared with alloys with different cooling rates, the higher the cooling speed, the higher the ignition point, and this is because the solid solution of Ce in the AZ91D alloy is controlled by the cooling speed.