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

An investigation of formation of second phases in microalloyed, AZ31 Mg alloys with Ca, Sr and Ce

“…Microstructure and EPMA analyses revealed that Al 11 Ce 3 exists in the alloy of AZ31 + Ce in the present examination, which is consistent with other investigations [26,27]. Moreover, a ternary intermetallic phase of Al 8 CeMn 4 was also found in microalloyed alloys with Ce.…”

Oxidation of magnesium alloys at elevated temperatures in air: A review

“…These Ce depleted localized regions became weak points for oxidation as the combined oxide layers on the surface of these regions could no longer provide oxidation protection. A similar result was reported by Li et al [144] for AZ91. They found that the decreased oxidation resistance could be suppressed by rapid solidification even when the Ce content was as high as 0.98 wt.% in AZ91.…”

Influence of Al and Y on the ignition and flammability of Mg alloys

“…Defining melting point as the liquidus of the alloy, they showed that ignition took place either above or below the melting point of the alloy. Li et al [12] and Huang et al [13] found that the ignition temperature of AZ91 increased by 60-80°C, attributed to CeO formation within the porous surface MgO, thereby inhibiting further oxidation. Similarly, Lin et al [14,15] found that increasing concentrations of Ce (0-1 wt%) increased the ignition temperature of rapidly solidified AM50 by up to 60°C.…”