Progress in dispersoids distribution precipitating during homogenising Zr-containing Al–Cu–Li and Al–Zn–Mg alloys

Retaining elongated grain microstructure during thermo-mechanical processes would be attractive for obtaining high-strength aluminium alloys with good toughness. A small Zr addition promotes the formation of Al 3 Zr dispersoids to inhibit the recrystallisation. Since the dispersoids precipitate directly from castings, their inhomogeneous distribution reduces the effectiveness on the recrystallisation resistance. This paper systematically …