STRAIN HARDENING. An increase in hardness and strength caused by plastic deformation at temperatures below the recrystallization range.
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SUPERCOOLING. Cooling below the temperature at which an equilibrium phase transformation can take place, without actually obtaining the transformation.
THERMAL SHOCK. The development of a steep temperature gradient and accompanying high stresses within a structure.
SELECTIVE HEATING. Intentionally heating only certain portions of a workpiece.
SOLID SOLUTION. A single, solid, homogenous crystalline phase containing two or more chemical species.