Development the mechanical properties of (AL-Li-Cu)‎ alloy

الملخص EN

The aim of this research is to develop mechanical properties of a new alloy aluminum-lithium-copper which is prepared by casting under control atmosphere in a permanent metal mold.

The mechanical properties (impact, elasticity modulus, tensile strength, and fatigue) with microstructure were examined before and after heat treatment.

The research outcome showed that the modulus of elasticity of the prepared alloy is higher than standard alloy about 2%.

While the alloy that was heat treated for 6 h and cooled in water, showed a higher ultimate tensile stress comparing with as-cast alloy.

The homogenous heat treatment gives best fatigue behavior compared with as-cast and other heat treatment alloys.

Also, the impact test illustrates that the homogeneous heat treatment alloy gives the highest value.