DEVELOPING A METHOD OF THERMAL REINFORCEMENT OF HIGH STRENGTH RAILS

This paper reviews methods of thermal strengthening steel rails which permit selections of an optimum microstructure at a given level of hardness (BH 450-480). The methods discussed involve normal volume hardening with tempering, stepwise volume hardening with tempering, isothermic hardening with and without tempering, high-temperature thermomechanical treatment, and high-temperature thermomechanical treatment with beinite transformation with and without tempering. Tabulated information is presented on types of steels tested, their chemical compositions, and their mechanical properties when strengthened. Graphs which are presented showing effect of hardness on the contact strength; head, web, and base hardness; brittle-fracture values for three different steels; and the occurrence of failure during low-temperature impact tests. It was concluded that none of the methods of rail hardening provided high contact strength and necessary reliability needed. Additional tempering of the web and base increased rail viability.

• Corporate Authors:

  All-Union Scientific Res Inst of Railroad Transp

  3-aya Mytishchinskaya Ulitsa 10
  Moscow I-164,   USSR 
• Authors:
  • Rauzin, Y R
  • Shur, Y A
  • Zonov, P N
  • Velikanov, A V
• Publication Date: 1974

Media Info

• Features: Figures; References; Tables;
• Pagination: p. 45-50
• Serial:
  • Vestnik VNIIZT
  • Issue Number: 3
  • Publisher: All-Union Scientific Res Inst of Railroad Transp

Subject/Index Terms

• TRT Terms: Forging; Fracture mechanics; High strength steel; Iron and steel industry; Metal hardening; Metallurgy; Rail steel; Railroad rails; Steel
• Old TRIS Terms: Rail hardening; Rail steel metallurgy; Steel metallurgy
• Subject Areas: Construction; Railroads;

Filing Info

• Accession Number: 00172621
• Record Type: Publication
• Files: TRIS
• Created Date: Mar 29 1978 12:00AM