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On the Decarburization of Surface Pearlite
Metallurgical and Materials Transactions A, 2021Under appropriate conditions, surface pearlite can form on the outer surfaces of specimen. The microstructure evolution during the decarburization of surface pearlite was investigated. Two cementite dissolution mechanisms were observed. The first involved the direct dissolution of cementite into the pearlitic ferrite.
Sai Li +5 more
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Metallurgical Transactions A, 1977
Pearlite with its lamellae oriented mainly parallel to the longitudinal direction was prepared by Bolling's method of transformation in a steep temperature gradient. The Fe-0.7 pct Mn-0.9 pct C pearlite was drawn into wire and also into strip in dies designed to minimize macroscopically nonuniform deformation.
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Pearlite with its lamellae oriented mainly parallel to the longitudinal direction was prepared by Bolling's method of transformation in a steep temperature gradient. The Fe-0.7 pct Mn-0.9 pct C pearlite was drawn into wire and also into strip in dies designed to minimize macroscopically nonuniform deformation.
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The ledge mechanism of pearlite growth
Scripta Metallurgica et Materialia, 1995The nature of the pearlite phase transformation has received much attention over the last decade. Most notably a body of work has presented observations that have been rationalized in terms of the operation of a ledge mechanism during pearlite growth and of a greater role for crystallography than previously accepted.
Whiting, Mark J, Tsakiropoulos, P
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Acta Metallurgica, 1987
Abstract Transmission electron microscopy of the pearlite: retained austenite growth interface in an Fe-0.8 wt%C-12 wt%Mn steel has revealed a direct relationship between growth ledges and the formation of steps on the ferrite-cementite lamellar interface.
S.A. Hackney, G.J. Shiflet
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Abstract Transmission electron microscopy of the pearlite: retained austenite growth interface in an Fe-0.8 wt%C-12 wt%Mn steel has revealed a direct relationship between growth ledges and the formation of steps on the ferrite-cementite lamellar interface.
S.A. Hackney, G.J. Shiflet
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The crystallography and nucleation of pearlite
Proceedings of the Royal Society of London. A. Mathematical and Physical Sciences, 1973Abstract By choice of a suitable iron—manganese—carbon alloy it has been possible to study pearlite nodules growing in austenite, without the austenite transforming on cooling to room temperature. Thin foil electron microscopy has been used to examine the orientation relations between cementite, ferrite and austenite as well as ...
R. J. Dippenaar +1 more
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Cementite morphology in pearlite
Acta Metallurgica, 1956Abstract Some characteristic growth patterns of cementite in pearlite, revealed by electron microscopy, are discussed in terms of the geometry of growth and of diffusion and surface energy factors. These include 1. (a) linear discontinuities in the lamellar structure, which are shown to be one possible origin of branching, 2.
F.C Frank, K.E Puttick
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Accelerated Spheroidization of Pearlite
Metal Science Journal, 1968AbstractA study has been made of the spheroidization of pearlite in eutectoid steel at 700° C under conditions of lengthy annealing, cold working at room temperature followed by annealing, hot torsion, and hot fatigue. The results show that hot torsion accelerates spheroidization by a factor of ∼ 104 compared with annealing but that acceleration by a ...
E. A. Chojnowski, W. J. McG. Tegart
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Mechanisms of Pearlite Spheroidization
Metallurgical Transactions A, 1987A study of the mechanisms of pearlite spheroidization under static annealing conditions was carried out in two materials — AISI 1080 steel and pure Fe-C alloy. By electrolytically etching away the ferrite matrix, the morphology of the cementite phase was directly investigatedvia SEM and TEM techniques.
Yong Lai Tian, R. Wayne Kraft
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Kinetics of pearlite spheroidizations
Metallurgical Transactions A, 1987A study of the kinetics of pearlite spheroidization under static annealing conditions was carried out in two materials — AISI 1080 steel and pure Fe-C alloy. A stereological “shape factor”,F, defined asF =Svp/3• Km, was introduced for the kinetic study.
Yong Lai Tian, R. Wayne Kraft
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2004
In the days before microscopy had become common practice, the iridescent appearance of the surfaces of certain steels under close observation led the structures concerned to he called pearlite.
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In the days before microscopy had become common practice, the iridescent appearance of the surfaces of certain steels under close observation led the structures concerned to he called pearlite.
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