Ferrire that is formed directly from the decomposition of hypoeutectoid austenite during cooling, without the simultaneous formation of cementite. Also called proeutectoid ferrite.

A metallic coating obtained bydipping the base metal into a molten metal.

The technique for varying the potential of an electrode in a continuous manner at a preset rate.

Formation of isolated particles of corrosion products beneath a metal surface. This results from the prcferential reactions of certain alloy constituents to inward diffusion of oxygen, nitrogen, or sulfur.

Corrosion occurring preferentially at grain boundaries, usually with slight or negligible attack on the adjacent grains. Also called intercrystalline corrosion.

Perforation of material in outer space resulting from meteor strikes.

The stress required to produce fracture in the plane of cross section, the conditions of loading being such that the directions of force and of resistance are parallel and opposite although their paths are offset a specified minimum amount. The maximum lo ...

Molten slag; in the pulp and paper industry, the cooking chemicals tapped from the recovery boiler as molten material and dissolved in the smelt tank as green liquor.

See hydrogenembriltlement.

Coating containing a zinc powder pigment in an inorganic vehicle.

Through or across crystals or grains. Also called intracrystalline or transcrystalline.

The current distribution in an electrolytic cell that is free of polarization.

(1) An arbitrarily defined temperature that lies within the temperature range in which metal fracture characteristics (as usually determined by tests of notched specimens) change rapidly, such as from primarily fibrous (shear) to primarily crystalline (cl ...

See galvanostatic.

The movement of ions through the electrolyte associated with the passage of the electric current. Also called transport or migration.

(1) Before finishing to final dimensions, repeatedly heating a ferrous or nonferrous part to or slightly above its normal operating, temperature and then cooling to room temperature to ensure dimensional stability in service. (2) Transforming retained aus ...

A tendency for some alloys to separate along grain boundaries when stressed ordeformed at temperatures near the melting point.Hot shortness is caused by a low-melting constituent, often present only in minute amounts,that is segregated at grain boundaries ...

Resin formed from reactions involving furfuryl alcohol alone or in combination with other constituents.

Deep internal cracks caused by hydrogen.

An aggregate of iron or alloy carbides of essentially spherical shape dispersed throughout a matrix of ferrite.