MECHANICAL PROPERTIES OF HIGH PURITY FE-C ALLOYS AT LOW TEMPERATURES

The mechanical properties of high-purity iron-carbon alloys, 0.003 to 0.49% carbon, at low temperatures were investigated. Results obtained indicate that the binary ferrites do not differ qualitatively from commercial ferritic steels in low-temperature behavior, assuming that in both cases oxygen contents are sufficiently low for fractures to be transcrystalline rather than intercrystalline. The study indicates that the exponent of strain hardening appears to be more significant in defining low-temperature brittleness than the slope of the uncorrected stress-strain curve. An hypothesis is also extended that while carbides initiate cracks, they also interfere with crack propagation and thus reduce the abrupt change from ductile to brittle behavior upon a decrease of temperature.

• Corporate Authors:

  University of Pennsylvania Law School

  3400 Chestnut Street
  Philadelphia, PA  United States  19104

  Ship Structure Committee

  National Academy of Science, 2101 Constitution Avenue, NW
  Washington, DC  United States  20418
• Authors:
  • Brick, R M
• Publication Date: 1959-3-31

Media Info

• Features: References;
• Pagination: 14 p.

Subject/Index Terms

• TRT Terms: Alloy steel; Brittleness; Cracking; Low temperature; Low temperature materials; Strain hardening; Tension tests
• Identifier Terms: Ship Structure Committee
• Uncontrolled Terms: Crack initiation; Crack propagation
• Old TRIS Terms: Tensile test
• Subject Areas: Marine Transportation; Materials;

Filing Info

• Accession Number: 00331296
• Record Type: Publication
• Source Agency: Ship Structure Committee
• Report/Paper Numbers: SSC- 94 Final Rpt.
• Contract Numbers: NObs-50062, NObs-72046
• Files: TRIS
• Created Date: May 21 1981 12:00AM