Metallurgy

Metallurgy

Metal works and production.

Industry: Metals; Materials science

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Metallurgy

Acid steel

Metals; Metallurgy

Steel melted in a furnace with an acid bottom and lining and under a slag containing an excess of an acid substance such as silica.

Acid-brittleness

Metals; Metallurgy

Brittleness resulting from pickling steel in acid; hydrogen, formed by the interaction between iron and acid, is partially absorbed by the metal, causing acid brittleness.

A change in properties that occurs at ambient or moderately elevated temperatures after hot working or a heat treating operation (quench ageing in ferrous alloys), or after a cold working operation ...

Age hardening

Metals; Metallurgy

Hardening by aging, usually after rapid cooling or cold working. The term as applied to soft, or low carbon steels, relates to a wide variety of commercially important, slow, gradual changes that ...

Activation

Metals; Metallurgy

The changing of the passive surface of a metal to a chemically active state. Contrast with passivation.

Acid-process

Metals; Metallurgy

A process of making steel, either Bessemer, open-hearth or electric, in which the furnace is lined with a siliceous refractory and for which low phosphorus pig iron is required as this element is not ...