PHASE IDENTIFICATION IN twin-roll cast Al-li alloys

Abstrakt

Al-Li based alloys are an attractive material for aircraft and aerospace applications. Preparation of these alloys by twin-roll casting (TRC), which combines rapid metal solidification and subsequent plastic reduction in a single processing step, could improve the properties of the alloys compared to materials prepared by conventional direct-chill casting.

Al-Cu-Li-Mg-Zr alloy was prepared by twin-roll casting. A combination of TEM and STEM images with chemical analysis by EDS and ACOM-TEM was used to obtain complex information about phases of boundary primary particles.

Klíčová slova

• Al-Cu-Li-M-Zr-Fe alloy
• twin-roll casting
• phase identification
• ACOM-TEM