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Development of High Performance Steels for Rail Applications

[+] Author Affiliations
R. Ordonez, C. Isaac Garcia, Anthony J. DeArdo

University of Pittsburgh, Pittsburgh, PA

Semih Kalay

Transportation Technology Corporation, Inc., Pueblo, CO

Paper No. JRC2010-36082, pp. 129-133; 5 pages
  • 2010 Joint Rail Conference
  • 2010 Joint Rail Conference, Volume 1
  • Urbana, Illinois, USA, April 27–29, 2010
  • Conference Sponsors: Rail Transportation Division
  • ISBN: 978-0-7918-4906-4 | eISBN: 978-0-7918-3867-9
  • Copyright © 2010 by ASME


Higher requirements of efficiency on railroad systems have set off (among other measures) higher axle load on rails. The increase in axle loads can contribute to a series of defects on perhaps the most unappreciated component of a railroad system. Higher axle loads can lead to excessive wear, fatigue and ultimately fracture of the steel rails. Therefore to answer the challenge demanded by the increase in axle loads the development of high performance steels for rail applications is of primary importance. A research program to study the microstructural aspects of near-eutectoid steels with improved mechanical properties and wear resistance was recently completed. The new high performance rail steels were developed through a combination of advanced alloy design-thermomechanical processing-and-controlled cooling. The mechanical properties exhibited by the new steels have exceeded the AREMA requirements for this type of rail steel application. The wear resistance of the newly developed steels was evaluated and the results obtained compared to commercial rails were superior under the testing conditions used in this study. The alloy design philosophy, thermomechanical processing and properties of the new steels will be presented and discussed in this paper.

Copyright © 2010 by ASME
Topics: Steel , Rails



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