THE LOW TEMPERATURE PROPERTIES OF RELATIVELY HIGH PURITY IRON-CARBON ALLOYS

The onset of brittleness in ship steel plate at a temperature which is determined by metallurgical and mechanical factors, continues to be a technical problem of considerable importance. Previous investigations of the metallurgical and mechanical factors have generally been on material equivalent to that used in actual practice; i.e. material containing a large number of compositional and stress variables. The present investigation, attempting to eliminate most of these variables, involved uniaxial tensile testing of eight relatively high purity alloys of iron containing from 0.020% to 0.49% carbon, stressed at temperatures from 28 deg C to those of liquid air or about -185 deg C. The structural conditions such as ferrite grain size and pearlite spacing were fixed and the strain rate was generally constant. The form of testing gave true stress-natural strain data. This made possible numerical evaluation of many parameters such as yield points, flow stresses, fracture stresses, ductilities in terms both of uniform and localized deformation and strain hardening factors. All of these were determined as affected by carbon content, and by 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:
    • Smith, R L
    • Fostini, R V
    • Brick, R M
  • Publication Date: 1952-8-29

Media Info

  • Pagination: 56 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00330997
  • Record Type: Publication
  • Source Agency: Ship Structure Committee
  • Report/Paper Numbers: SSC- 52 Prog Rpt.
  • Contract Numbers: NObs-50062
  • Files: TRIS
  • Created Date: May 21 1981 12:00AM