AN INVESTIGATION OF THE INFLUENCE OF DEOXIDATION AND CHEMICAL COMPOSITION ON NOTCHED-BAR PROPERTIES OF SEMIKILLED SHIP STEEL

Formulas for calculating tensile properties and notched-bar transition temperatures were developed from data obtained on a comprehensive series of experimental steels. For a particular strength level, steels with higher manganese-carbon ratios have lower transition temperatures. The influence of nitrogen in raising the strength and transition temperature of semikilled steel was studied. Heats treated with zirconium in amounts ranging from 0.06 to 0.10 per cent were made and tested. Small additions of aluminum to steels with low silicon contents usually lowered the tear-test and Charpy transition temperatures. The presence of titanium in excess of 0.02 per cent seems to increase the transition temperature of both Type A and Type B type ship plate. Increasing the ferritic grain size of a particular steel by austenitizing at increasingly higher temperatures raises the transition temperature.

  • Supplemental Notes:
    • Proj. NS-731-036, See also AD-635 791.
  • Corporate Authors:

    Battelle Memorial Institute

    505 King Avenue
    Columbus, OH  United States  43201
  • Authors:
    • Frazier, R H
    • Boulger, F W
    • Lorig, C H
  • Publication Date: 1952-11-28

Media Info

  • Pagination: 98 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00327710
  • Record Type: Publication
  • Source Agency: National Technical Information Service
  • Report/Paper Numbers: SSC-053 Prog Rpt.
  • Contract Numbers: NOBS-53239, NOBS-50148
  • Files: TRIS
  • Created Date: Feb 18 1981 12:00AM