the fuidity of aliminium-silicon alloy is one if the main reasons why they are extensively used for for sands and die casting. describe in detail the freezing of LM 10 alloy extensively used in many automobile parts. your answer should include all relevent microstructures and refrence should be made to potential defects and modification of these alloys.

b) The fluidity of aluminium-silicon alloys is one of the main reasons why they are extensively used for both sand and die casting. Describe in detail the freezing of LM 10 (aluminium/10\% silicon) alloy extensively used in many automobile parts. Your answer should include all relevant microstructures and reference should be made to potential defects and "modification" of these alloys