Aluminium is among the most commonly used structural materials due to the lightweight and excellent corrosion resistance

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Aluminium Is Among The Most Commonly Used Structural Materials Due To The Lightweight And Excellent Corrosion Resistance 1 (69.54 KiB) Viewed 16 times

Aluminium is among the most commonly used structural materials due to the lightweight and excellent corrosion resistance. Alloying aluminium with other elements improves the mechanical properties and ultimately result in wider range of application. Different process condition would result in different microstructure and properties of the alloys. To fulfil the industrial and engineering needs, aluminium alloys are tailored accordingly by varying the alloying elements and composition. Phase diagram provide vital information on the composition in producing desired alloy microstructure and properties. i) Select ONE (1) example of an aluminium binary phase diagram and discuss the application of specific aluminium alloy composition from the chosen phase diagram. Describe the terminal phases present including the microstructure and its solubility limit. (10 marks) ii) With the aid of sketches, explain the solidification of the alloy chosen in (i) from liquid to final microstructure present at room temperature. Determine the phase present, their individual composition, and the phase fraction at 250∘C.