The permanent deformation or crystal distortion of a metal below its lowest temperature of re-crystallization, resulting in work hardening.
Welding Tech
Reducing the cross-section of a metal by means of a rolling mill while the metal is cold or below its re-crystallization temperature.
Incomplete fusion or overlap.
Reducing the cross-section of a metal by pulling it through a die while its temperature is below the re-crystallization temperature.
Moving in unison.