High-Temperature Tensile Fractography of Zr-, Ni-, and Mn-Containing Al-Si-Cu-Mg Cast Alloys

Figure 8

(a) BSE image of T6-treated M2S alloy after stabilization at 250°C for 200 hours showing the dimple structure, coarsened precipitates, and phases involved in the crack initiation process and (b), (c) EDS spectra identifying the Ni-rich phases shown in (a).

(a)

(b)

(c)