Cracking or fracturing that occurs between the grains or crystals in a polycrystalline aggregate. Also called intercrystalline cracking. Contrast with transgranular cracking.

The swelling or bubbling of a coating usually because of heating (term currently used in space and fire protection applications).

The liquor resulting from dissolving molten melt irom the kraft recovery furnace in water. See also kraft process and smelt.

See galvanostatic.

Perforation of material in outer space resulting from meteor strikes.

The technique for maintaining a constant electrode potential.

The component of either a liquid or solid solution that is present to a greater or major extent; the component that dissolves the solute.

See hydrogen embrittlement.

Deep internal cracks caused by hydrogen.

See hydrogen embrittlement.

Electrode potential where half-cell reaction involves only the metal electrode and its ion.

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

Aging induced by cold working.

See intergranular corrosion.

Discontinuities in ci coating (suchasporosity, cracks, gape. and similar Bawd) that allow areas of base metal to be exposed to any corrosive environment that contacts the coated surface.

Corrosive attack that progresses preferentially along interdendritic paths. This type of attack results from local differences in composition, such as coring commonly encountered in alloy castings.

See hydrogenembriltlement.

The ability of a metal to absorb energy and deform plastically before fracturing.

In fatigue, the variation in the stress-intensity factor in cycle, that is, Kmax-Kmin.

A gaseous environment containing hydrogen sulfide and carbon dioxide in hydrocarbon reservoirs. Prolonged exposure to sour gas can lead to hydrogen damage, sulfide-stress cracking, and/or stress-corrosion cracking in ferrous alloys.