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Materials Science and Technology, 1993
Abstract It is proposed that cementite owes its stability, relative to other iron carbides, to its crystal structure, which enables its carbon atoms to form extra covalent bonds with iron atom neighbours. An analysis based on tight binding theory suggests that cementite has an advantage of nearly 0·5 eV per Fe3C unit over an alternative Fe3C carbide ...
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Abstract It is proposed that cementite owes its stability, relative to other iron carbides, to its crystal structure, which enables its carbon atoms to form extra covalent bonds with iron atom neighbours. An analysis based on tight binding theory suggests that cementite has an advantage of nearly 0·5 eV per Fe3C unit over an alternative Fe3C carbide ...
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Transformation of cementite into austenite
Metal Science and Heat Treatment, 19821. Austenitization of white iron primary cementite crystals in contact with ferrite commences at the interphase boundary. Austenite is formed as a result of withdrawal of carbon atoms from cementite into ferrite. 2. Grains of austenite phase forming in cementite create lamellar clusters oriented along the direction of cementite crystal ...
V. M. Ershov, L. S. Nekrasova
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Journal of Materials Science, 1983
The hot hardness was measured on the (010) plane of primary cementite in unidirectionally solidified iron-carbon, iron-carbon-chromium, and iron-carbon-boron alloys at temperatures up to 973 K, using a hot hardness tester equipped with an indenterheating system.
Akio Kagawa, Taira Okamoto
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The hot hardness was measured on the (010) plane of primary cementite in unidirectionally solidified iron-carbon, iron-carbon-chromium, and iron-carbon-boron alloys at temperatures up to 973 K, using a hot hardness tester equipped with an indenterheating system.
Akio Kagawa, Taira Okamoto
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On the Mössbauer study of cementite
Physics Letters, 1966Abstract Mossbauer study on cast iron and two kinds of steels show two modifications of cementite, -one ferromagnetic and the other paramagnetic (at room temperature). The two forms were extracted as pure phases by HCl and studied.
M. Ron +3 more
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On the problem of the cementite structure
The Physics of Metals and Metallography, 2006Evolution of the crystalline structure of cementite that was formed in contact with α-Fe upon heat treatments of a mechanically alloyed iron-amorphous Fe-C phase nanocomposite has been studied using X-ray diffraction and Mossbauer spectroscopy.
E. P. Elsukov +3 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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Comments on ‘Thermodynamics of cementite layer formation’
Scripta Materialia, 2010Recently Nafe offered a thermodynamic explanation for the previously reported suppression of metal dusting by the presence of ammonia in the gaseous carburising atmosphere leading to formation of massive Fe3C (cementite) layers on the surface of ferritic iron (α-iron).
Leineweber, A. +3 more
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Ferrite: Cementite crystallography in pearlite
Metallurgical Transactions A, 1992The interlamellar crystallography of pearlite in iron-carbon alloys is examined in Fe-0.8C and Fe-0.81C-12Mn steels with attention given to the Bagaryatsky, Pitsch-Petch, and Isaichev orientation relationships and their related atomic habit planes.
D. S. Zhou, G. J. Shiflet
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Pearlite, Ferrite, and Cementite
2015The microstructure of carbon steel is largely determined by the transformation of austenite to ferrite, cementite, and pearlite. This chapter focuses on the microstructures produced by diffusion-controlled transformations that occur at relatively low cooling rates.
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