“…In these cases, precipitation hardening is achieved during heat treatments following casting, that is the precipitates are produced from an initially solutionised state. Major increases in hightemperature flow strength and creep strength have also been shown to be possible by the introduction of particle dispersions, for example of complex Laves phases, directly during the casting stage [29][30][31][32][33][34]. While such particles often show great thermal stability, a disadvantage of such cast-in particles is that they are usually distributed as brittle intermetallic networks that will reduce ductility to very low levels [29,35].…”