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Pearlite is a two-phased,
lamellar (or layered)
structure composed of
alternating layers of
ferrite (87.5 wt%) and
cementite (12.5 wt%) that
occurs in...
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carbides within a
tempered martensite or
pearlite matrix in higher-carbon steel, or by
ferrite and
pearlite banding in lower-carbon steels. It was a pioneering...
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example the
beginning of
pearlitic transformation is
represented by the
pearlite start (Ps) curve. This
transformation is
complete at Pf curve. Nucleation...
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called pearlite.
Since pearlite is
harder than iron, the
degree of
softness achievable is
typically limited to that
produced by the
pearlite. Similarly...
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carbide finely dis****d and
produce a fine
grained pearlite and
cooling slowly will give a co****r
pearlite.
Cooling a
hypoeutectoid steel (less than 0.77...
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Depending on
alloy composition, a
layering of
ferrite and cementite,
called pearlite, may form. If the rate of
cooling is very swift, the
carbon does not have...
- and
ending at 450 °C
takes place in 0.7
seconds (a rate of 430 °C/s) no
pearlite will form, and the
steel will be
martensitic with
small amounts of retained...
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transformation of
austenite to
bainite (125–550 °C) is
between those for
pearlite and martensite. In fact,
there is no
fundamental lower limit to the bainite-start...
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between pearlite and martensite. In normalizing, both
upper and
lower bainite are
usually found mixed with
pearlite. To
avoid the
formation of
pearlite or...
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alter the
microstructure of
carbon steels,
which is
usually a ferrite-
pearlite aggregate, to
produce a very fine
dispersion of
alloy carbides in an almost...
