Results 171 to 180 of about 14,673 (221)
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Metallurgical Transactions, 1972
A critical appraisal of theory and experiments for both isothermal and forced velocity pearlite is presented. It is concluded for binary systems that both the theoretical models for volume diffusion and boundary diffusion control are well-advanced and adequate for the purposes of experimental test.
M. P. Puls, J. S. Kirkaldy
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A critical appraisal of theory and experiments for both isothermal and forced velocity pearlite is presented. It is concluded for binary systems that both the theoretical models for volume diffusion and boundary diffusion control are well-advanced and adequate for the purposes of experimental test.
M. P. Puls, J. S. Kirkaldy
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Ultrasonic attenuation in pearlitic steel
Ultrasonics, 2014Expressions for the attenuation coefficients of longitudinal and transverse ultrasonic waves are developed for steel with pearlitic microstructure. This type of lamellar duplex microstructure influences attenuation because of the lamellar spacing. In addition, longitudinal attenuation measurements were conducted using an unfocused transducer with 10 ...
Hualong, Du, Joseph A, Turner
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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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IRON CASTINGS, PEARLITIC MALLEABLE
2017<div class="section abstract"> <div class="htmlview paragraph">This specification covers a pearlitic malleable iron in the form of castings.</div></div>
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Metallurgical Transactions, 1970
A high purity Fe-C alloy of eutectoid composition has been transformed from homogenized austenite in two ways: isothermally and at forced constant-velocity. The latter transformation mode, forced over five decades of velocity, produces structures with characteristic dimensions ranging over nearly two orders of magnitude. There is a consistent alignment
G. F. Bolling, R. H. Richman
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A high purity Fe-C alloy of eutectoid composition has been transformed from homogenized austenite in two ways: isothermally and at forced constant-velocity. The latter transformation mode, forced over five decades of velocity, produces structures with characteristic dimensions ranging over nearly two orders of magnitude. There is a consistent alignment
G. F. Bolling, R. H. Richman
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Microstructure and Substructure of Pearlite in Hypoeutectoid Ferritic-Pearlitic Steels
Metal Science and Heat Treatment, 2017The substructure and microstructure of pearlite in hypoeutectoid low-carbon steel 09G2S is studied using high-contrast images in a scanning electron microscope and electron backscattered diffraction. Acorrelation is established between local deviations from “ideality” in the structure of pearlite and the substructure of pearlitic ferrite.
M. M. Kantor, K. G. Vorkachev
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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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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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Alloy Digest, 1959
Abstract PEARLITIC MALLEABLE IRON is a high strength cast iron recommended for dependable service, strength and machinability in highly stressed parts at work in mobile and stationary mechanisms. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear ...
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Abstract PEARLITIC MALLEABLE IRON is a high strength cast iron recommended for dependable service, strength and machinability in highly stressed parts at work in mobile and stationary mechanisms. This datasheet provides information on composition, physical properties, hardness, elasticity, tensile properties, and compressive and shear ...
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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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