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· The microstructure produced
by the equilibrium cooling of an alloy with less than the eutectoid carbon content,
a hypo-eutectoid steel, will have pro-eutectoid Ferrite
and a perlitic
grain structure
as shown.
· The generation
of the hypo-eutectoid structure during the phase transition is illustrated.
· Prior to reaching the eutectoid
temperature, the alloy enters the two-phase γ + α zone. Cooling to
the eutectoid temperature, Ferrite
crystals grow in the Austenite
matrix, and the γ-Fe increases in carbon content until the
eutectoid temperature is reached.
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