INVESTIGATION OF MEANS FOR EVALUATING THE QUALITY OF HULL PLATE STEEL BY TESTS CONDUCTED ON FURNACE OR LADLE SAMPLES
Abstract
A simple but reliable method for evaluating the notch sensitivity of hull steel before the steel has been rolled into plate was sought. Several series of both the low- and high-silicon steels were made both with and without aluminum deoxidation and tested by standard V-notch Charpy impact tests and by a round Charpy impact bar, which was developed to save machining time and cost. Notched-bar impact values of the high-silicon steels with or without aluminum deoxidation, are low and not significantly different. A marked superiority of the aluminum-killed steels is apparent when these steels are properly normalized and also when these or the low-silicon steels are hot rolled at proper temperatures. Specimens hot rolled and then subjected to strain aging show a further decrease in notched-bar impact resistance of the nonaluminum as compared with the aluminum-killed steels. A series of notched-bend bar tests qualitatively indicated the same trends by fracture appearance and manner of breaking, but no quantitative evaluations were obtained from static bend tests.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 15, 1947
- Accession Number
- AD0635763
Entities
People
- C. H. Lorig
- S. A. Herres
- W. G. Heer
Organizations
- Battelle Memorial Institute