metallurgi

Metallurgi, or metallurgy in English, is the branch of materials science and engineering concerned with the production and properties of metals. It encompasses the extraction of metals from ores, the refining of metal compounds, and the processing of metals into usable shapes and alloys. The field is traditionally divided into extractive metallurgy and physical metallurgy, with subdisciplines such as pyrometallurgy, hydrometallurgy, electrometallurgy, and alloy development.

Historically, metallurgy began with the smelting of copper and tin in the late Bronze Age and later the production of iron. The Industrial Revolution brought advances in steelmaking, from the Bessemer converter to basic oxygen steelmaking, and in non-ferrous refining. In the 20th century, electric arc furnaces and hydrometallurgical techniques expanded the range of processes, enabling recycling and more precise control of alloy composition.

Extractive metallurgy covers ore concentration, reduction, and refining to extract pure metals. Pyrometallurgy uses high temperatures; hydrometallurgy relies on aqueous solutions; electrometallurgy uses electrical energy for electrolytic refining or deposition. Physical metallurgical techniques study the microstructure, phase transformations, and properties of metals, guiding alloy design, heat treatment, and forming processes such as casting, forging, and rolling.

Metallurgy is essential to construction, transportation, electronics, and industrial machinery. Current priorities include energy efficiency, emissions reduction, and metal recycling, as well as development of lightweight, high-strength alloys and metal matrix composites. The field combines experimental work with computational materials science to predict performance and optimize processes.