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.
- Proj. NS-731-036, See also AD-635 791.
Battelle Memorial Institute505 King Avenue
Columbus, OH USA 43201
- Frazier, R H
- Boulger, F W
- Lorig, C H
- Publication Date: 1952-11-28
- Pagination: 98 p.
- TRT Terms: Alloys; Aluminum alloys; Fracture mechanics; Hot rolling; Hulls; Impact tests; Manganese; Materials tests; Metal working; Metallurgy; Nitrogen; Silicon alloys; Steel; Steel plates; Temperature; Tensile properties; Titanium alloys; Transition point; Welds
- Identifier Terms: Ship Structure Committee
- Uncontrolled Terms: Metal structure; Ship hulls
- Old TRIS Terms: Carbon alloys; Deoxidation metallurgy; Manganese alloys; Rolling metallurgy; Ship plates; Steel testing; Zirconium alloys
- Subject Areas: Marine Transportation; Materials; Research;
- 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