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Dr. Anand Kumar Sharma

Dr. Anand Kumar Sharma

studierte an der Universität Delhi, die er mit einem Doktortitel in Chemie verließ. Vormalig renommierter Wissenschaftler am URSC/ISRO, Bangalore, Indien. Er hält 16 Patente und war unter anderem Mitglied des External Advisory Committee of World Association of Nuclear Operators (WANO).
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Geschätzte Lesezeit: 6 - 12 Minuten

Magnesium has a hexagonal close-packed (hcp) crystalline structure; it lacks ductility when worked at lower temperatures. Furthermore, in its pure polycrystalline form, it does not have sufficient strength for most structural applications. The metal is brittle and easily fractures along shear bands due to strain localization. Because of these reasons, pure magnesium must be alloyed with other elements to impart strength, weldability, formability, corrosion resistance, etc. In this article, types of magnesium alloys and their nomenclature system is discussed.

Geschätzte Lesezeit: 7 - 14 Minuten

Magnesium is the ninth most abundant element in the universe by mass. It is plentifully available in the seawater (~ 0.13%) and earth’s crust (constitutes around 2.4%). Because of its strong reactivity, it does not occur in the native state, but rather it is found in a wide variety of compounds in seawater, natural brines, and rocks. By far the largest source is the oceans, though seawater consists of only about 0.13 % magnesium, it represents an almost inexhaustible source. Additionally, magnesium alloys are easily recyclable at low-energy costs without environmental pollution.

Geschätzte Lesezeit: 7 - 14 Minuten

Magnesium is the lightest structural metal and therefore a dream material for applications where fuel economy is a prerequisite. Applications of magnesium alloys are primarily motivated by their strength-to-weight ratio, ability to dampen shockwaves, close dimensional tolerance, and ease of fabrication. Magnesium alloys are therefore widely used in the construction of automobile, aerospace and ballistic missiles parts. Owing to their comparative strength and relatively lower cost, magnesium alloys are also seen as an alternative to conventional lightweight fibre metal laminates or carbon fibre composites. In this articles series in twelve parts, we will discuss from the extraction of magnesium to surface finishing of its products.

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