Precipitation in an A356 foundry alloy with Cu additions - A transmission electron microscopy study

Figure 3 Representative areas of IGC attacks in the three investigated conditions indicated in Figure 2. Corresponding precipitate parameters measured from such images are given

condition. HAADF STEM images of precipitates from the three investigated alloys. The precipitates chosen are typical for the respective alloy and shows that the addition of Ge and

For alloy S, the precipitates typically showed a predominantly Al-Mg-Si containing β″ phase and U2 phase interior, and some Cu enrichment, as well as a few sub-units of β Cu ′

3 shows that after 10 minutes of the isothermal heat treatment at 463K (190°C) the alloy containing 0.10 wt% Cu has a slightly higher hardness than the alloy containing 0.01 wt% Cu,

5 (a) also shows a significant intensity at the same sites, meaning that these columns must be mixed Ag/Si. One column has been marked with a red ‘+’ in Fig. This column has a

Grain boundary structures and their correlation with intergranular corrosion in an extruded Al-Mg-Si-Cu alloyA. Electron backscatter diffraction demonstrates the presence of

Measured and predicted grain sizes based on three different growth kinetics as a function of cooling rate for (a) 0.05 wt.% and (b) 0.1 wt.% Al-5Ti-1B inoculated Al- 10wt.%Cu

When a sheared precipitate is observed along the needle lengths using HRTEM or HAADF STEM, the images will contain regions that are a mix of β″ and matrix structures (from the