Aluminum-Lithium Alloy Forgings for Aerospace

A variety of components have been successfully forged in mechanically alloyed IncoMAP* Alloy A1-905XL and I/M route Alcan 8090 aluminium-lithium alloys. Open die, ring rolling and closed die forging have been shown to be practical processing routes for both materials. The requirement for cold working 8090 prior to ageing in order that optimum properties are developed has been demonstrated. Components in the IncoMAP material require no heat treatment following forging to develop the required property levels. IncoMAP A1-905XL has been shown to be thermally stable following exposure to temperatures up to 400°C.