IntroductionMagnesium and its alloys are the lightest metal structure material in engineering application at present. Compared with other metal materials, magnesium and its alloys have low density, high specific strength and stiffness, good thermal and electrical conductivity, excellent electromagnetic shielding ability, easy recycling, and many other advantages, which have a strong potential for use as structural materials in automotive, aerospace and 3C industries. A representative of the most important commercial magnesium alloys is the Mg–Al based alloy with the composition Mg–9Al–1Zn, known as AZ91, which has been studied a lot. Recently, people have paid more and more attention to magnesium alloys containing rare earth (RE) because of its high strength and good performance both at room and high temperatures. Mg–Gd alloy is one of the most promising alloys because of its excellent age hardening property and creep resistance up to 523 K. It has been demonstrated that rare earth metals are the most effective elements for improving the strength properties of magnesium.Many studies have shown that the microstructure of Mg–Gd alloy has a great influence on the properties of the as‐cast alloy, as well as the properties of the alloy after heat treatment. Some researchers have found that cooling rate
Advanced Engineering Materials – Wiley
Published: Jan 1, 2018
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