Q.Which Mg alloy is used in making parts of jet engines ?
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Start your 14-day free trial to unlock the full solution →A magnesium alloy with 3% misch metal and 1% zirconium is used for jet engine parts.
Pure magnesium is too soft and not strong enough at high temperatures for aerospace components, so it is alloyed with small quantities of other elements. Misch metal (an alloy of cerium and other rare-earth/lanthanide metals) improves strength and creep resistance at elevated temperature, while zirconium acts as a grain refiner, giving a fine-grained, mechanically stronger casting. Because magnesium is one of the lightest structural metals, such an alloy combines low density with adequate high-temperature strength, which is exactly what is need …
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