Accession Number : AD0429140


Title :   EFFECT OF COLD FORMING ON THE STRESS-STRAIN CHARACTERISTICS OF HY-80 STEEL PLATES.


Descriptive Note : Progress rept.,


Corporate Author : UNITED STATES STEEL CORP MONROEVILLE PA


Personal Author(s) : Rolfe,S T ; Haak,R P


Report Date : 02 Jan 1964


Pagination or Media Count : 1


Abstract : This report describes the effects of cold deformation and subsequent stress relieving or aging on the stress-strain characteristics of the HY-80 steel plates. True-stress-true-strain curves were evaluated, and the results indicated that changes in the behavior of cold-formed HY-80 plates occurred primarily in the initial portion of the stress-strain curves. Analysis of the initial portions of stress-strain curves of colddeformed material showed that material tested in the same direction as the cold deformation had a slightly lower secant modulus during loading, and a higher flow-stress curve than undeformed material because of strain hardening. Material tested in a direction opposite to the cold deformation had a lower secant modulus during loading and a lower flow-stress curve than undeformed material--a manifestation of the Bauschinger effect. (Author)


Descriptors :   *SUBMARINE HULLS , *STEEL , METAL PLATES , COLD WORKING , MATERIAL FORMING , DEFORMATION , STRESSES , STRAIN(MECHANICS) , HEAT TREATMENT , AGING(MATERIALS) , HARDENING


Distribution Statement : APPROVED FOR PUBLIC RELEASE