ACICULAR FERRITE. A highly substructed nonequaixed ferrite formed upon continuous cooling by a mixed diffusion and shear mode of transformation that begins at a temperature slightly higher than the transformation temperature range for upper bainite in that it has a limited amount of carbon available; thus, there is only a small amount of carbide present.
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SUBCRITICAL ANNEALING. A process anneal performed on ferrous alloys at a temperature below Ac1.
ULTIMATE STRENGTH. The maximum conventional stress (tensile, compressive or shear) that a material can withstand.
SHAKER-HEARTH FURNACE. A continuous type furnace that uses a reciprocating shaker motion to move the parts along the hearth.
STATISTICAL PROCESS CONTROL. The application of statistical techniques for measuring and analyzing the variation in processes.