STEEL ALLOYS WITH LOWER BAINITE MICROSTRUCTURES FOR USE IN RAILROAD CARS AND TRACK

In-line hardening of railroad rails to produce a very fine pearlite microstructure has become a commercial reality. A question that this report seeks to answer is whether or not it is possible to find an alloy composition that will permit the development of lower bainite microstructures by in-line hardening in rails, wheels, and cable car plate. The application of the in-line hardening process becomes more difficult in the production of lower bainite microstructures because of the need to quench in a controlled fashion to lower isothermal transformation temperatures. Use of the computer program SteCal has suggested that the addition of molybdenum with boron will achieve the needed development of the binite nose accompanied by suppression of the pearlite transformation.

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• Record URL:
  • https://rosap.ntl.bts.gov/view/dot/8474
• Corporate Authors:

  Research and Special Programs Administration

  Volpe National Transportation Systems Center, Kendall Square
  Cambridge, MA  United States  02142

  Metallurgical Consulting Services, Incorporated

  487 Bolton Road
  Vernon, CT  United States  06066

  Federal Railroad Administration

  Office of Research and Development, 1200 New Jersey Avenue, SE
  Washington, DC  United States  20590
• Authors:
  • Steele, R K
• Publication Date: 2002-1

Language

• English

Media Info

• Features: Figures; References; Tables;
• Pagination: 96 p.

Subject/Index Terms

• TRT Terms: Alloys; Hardness; Isotherms; Metallurgy; Microstructure; Railroad tracks; Steel
• Subject Areas: Railroads; Vehicles and Equipment;

Filing Info

• Accession Number: 00921339
• Record Type: Publication
• Report/Paper Numbers: DOT/FRA/ORD-01/15,, DOT-VNTSC-FRA-98=11
• Contract Numbers: R-8009/RR-810
• Files: NTL, TRIS, USDOT
• Created Date: Mar 14 2002 12:00AM