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Title: Analysis of structure and phase composition of rails subjected to differential hardening at different regimes

Differential hardening of rails by compressed air in different regimes is accompanied by formation of morphologically different structure, being formed according to the diffusion mechanism of γ↔α transformation and consisting of grains of lamellar pearlite, free ferrite and grains of ferrite-carbide mixture. By methods of transmission electron microscopy the layer by layer analysis of differentially hardened rails has been carried out, the quantitative parameters of the structure, phase composition and dislocation substructure have been established and their comparison has been made for different regimes of hardening. It has been found that the structure-phase states being formed have gradient character, defined by the hardening regime, direction of study from the surface of rolling and by depth of location of layer under study.
Authors:
; ; ; ;  [1] ;  [2] ;  [3]
  1. Siberian State Industrial University, Novokuznetsk, 654007 (Russian Federation)
  2. High Current Electronics Institute SB RAS, Tomsk, 634055 (Russian Federation)
  3. EVRAZ Consolidated West Siberian Metallurgical Plant, Novokuznetsk, 654043 (Russian Federation)
Publication Date:
OSTI Identifier:
22390405
Resource Type:
Journal Article
Resource Relation:
Journal Name: AIP Conference Proceedings; Journal Volume: 1623; Journal Issue: 1; Conference: International Conference on Physical Mesomechanics of Multilevel Systems 2014, Tomsk (Russian Federation), 3-5 Sep 2014; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 36 MATERIALS SCIENCE; CARBIDES; COMPARATIVE EVALUATIONS; COMPRESSED AIR; DIFFUSION; DISLOCATIONS; FERRITE; FERRITES; HARDENING; LAYERS; MIXTURES; PEARLITE; ROLLING; SURFACES; TRANSMISSION ELECTRON MICROSCOPY