24September2017

Materials and Electronics Engineering

Evolution of structure and properties of railhead fillet in long-term operation

V.E. Gromov1*, Yu.F. Ivanov2, 3, 4, O.A. Peregudov1, K.V. Morozov1, X.L. Wang5, W.B. Dai6, Yu.V. Ponomareva1, O.A. Semina1

Abstract
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1Siberian State Industrial University
2Institute of high current electronics, Sib.D, RAS
3National research Tomsk state University
4National research Tomsk polytechnical University
5Research Institute, Northeastern University, Shenyang, China
6School of Materials and Metallurgy, Northeastern University, Shenyang, China

Materials and Electronics Engineering 20152:4

Publication Date (Web): October 10, 2015 (Article)

DOI:10.11605/mee-2-4

*Corresponding author. E-mail: This email address is being protected from spambots. You need JavaScript enabled to view it.

 

Abstract

 


Figure 5 Structure being formed in surface layer of rail steel as a result of service (1000 mln.t.). In (c) the particles of carbide phase located along the boundaries of fragments are designated by arrows.

By methods of modern physical materials science the nature of structure – phase changes in the fillet surface layers of rail in the process of long-term operation was established (passed tonnage 500 and 1000 mln tons brutto). A multifactor character of increase in microhardness of surface layers was analyzed.


 

Keywords

Rails, Surface, Phase composition, Defect substructure