The Tensile Properties of a Particulate Reinforced Al Alloy in the Temperature Range −196–300°C

The tensile properties of a particulate reinforced Al–Si–Mg alloy were determined in the temperature range −196–300°C. Microstructural coarsening of a peak aged (T61) material occurs at the higher temperatures (i.e. 200 and 300°C), which, together with the test temperature, results in a considerable decrease in flow strength for both the composite and unreinforced alloy. However, the strengthening ratio (i.e. the ratio of composite to matrix …