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The structural and phase states and dislocational substructure in high-quality bulk-quenched rail are assessed quantitatively by transmission electron diffraction microscopy. On the basis of the morphological features, the following structural components of the rail steel are identified: plate pearlite (68%); mixed ferrite–carbide grains (28%); and structure-free ferrite grains (4%). Analysis of the...
For high-quality rail bulk-quenched in oil and DT350 rail differentially quenched in different conditions, the low-temperature reliability, wear resistance, and contact-fatigue strength are subjected to layer-by-layer analysis along the central axis and at the shoulder, by up-to-date physical methods. On the basis of the results the structure, phase state, defect substructure, and internal stress...
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