Magnesium grain-refining using titanium
AssigneeGM Global Technology Operations LLC
InventorsXiaoqin Zeng, Yingxing Wang, Wenjiang Ding, Aihua Luo
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Abstract
The grain size of magnesium alloys is effectively refined and made smaller by the addition of a small amount of titanium. The effect of the reduction of grain size is often an improvement in the strength and processability of a cast magnesium alloy. Often less than about 0.1% by weight of titanium need be used. It may be preferred to incorporate the titanium with another alloying constituent (such as aluminum) for addition to a melt of a magnesium base alloy.
Claims10
A cast alloy containing magnesium as the base constituent and further containing titanium added in an amount to reduce the average size of the grains in the microstructure of the as-cast alloy.
A method of making a casting, by a selected casting mode, of a selected magnesium-based alloy composition with metallurgical microstructural grains of refined size or shape, the method comprising:
- adding a predetermined amount of titanium as a microstructural grain-refiner to a melt of the selected magnesium-based alloy composition and pouring the casting.
Dependencies are inferred from the claim text.