A study of nanoscale Al3(Zr,Yb) dispersoids structure and thermal stability in Al-Zr-Yb alloy

► Addition of Zr and Yb forms high-density homogeneous Al3(Zr,Yb) dispersoids. ► Al3(Zr,Yb) dispersoids contains two types. ► Zr incorporating Al3Yb dispersoids exhibit unique core/shell structure. ► Al3(Zr,Yb) has good thermal stability and inhibit-recrystallization ability.