Accession Number:

AD0294827

Title:

THE EFFECT OF METALLURGICAL VARIABLES IN SHIPPLATE STEELS ON THE TRANSITION TEMPERATURES IN THE DROP-WEIGHT AND CHARPY V-NOTCH TESTS

Descriptive Note:

Corporate Author:

BATTELLE MEMORIAL INST COLUMBUS OHIO

Personal Author(s):

Report Date:

1962-12-03

Pagination or Media Count:

1.0

Abstract:

The effects of composition and ferrite grain size on drop-weight transition temperatures were stdied. To provide an internal check and to permit comparisons with other investigations, parallel studies were made on V-Notch Charpy specimens. The experimental steels covered the following ranges in composition 0.100.32 carbon, 0.301.31 manganese, 0.020.43 silicon, and nil0.136 acid soluble aluminum. These ranges were intentionally wider than the limits permitted for ship plate. Although most of the data were obtained on hot-rolled samples, some plates were heat treated in order to cover a wider range in ferrite grain size. The study showed that carbon raises and manganese, silicon, aluminum and finer ferrite grain sizes lower both drop-weight and Charpy transition temperatures. Quantitatively, variations in composition and grain size have a more marked effect on Charpy transition temperatures than on the drop-weight transition temperature. Author

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Distribution Statement:

APPROVED FOR PUBLIC RELEASE