Accession Number : AD0456322


Title :   EFFECT OF TEMPERING AND STRESS-RELIEVING TREATMENTS ON THE MECHANICAL PROPERTIES OF HY-80 AND 5NI-CR-MO-V PRODUCTION STEELS


Descriptive Note : Technical rept.


Corporate Author : UNITED STATES STEEL CORP MONROEVILLE PA APPLIED RESEARCH LAB


Personal Author(s) : Manganello, S J


Full Text : https://apps.dtic.mil/dtic/tr/fulltext/u2/456322.pdf


Report Date : 01 Dec 1964


Pagination or Media Count : 56


Abstract : Although most plates for submarine hulls are not normally stress- relieved, highly deformed hull plates are stress-relieved and plates for other applications may require stress relieving. Therefore, a study was initiated to determine the effect of stress relieving for times up to 125 hours in the temperature range 950 to 1050 F on the properties of quenched and tempered plates of the 5Ni-Cr-Mo-V experimental HY-130/150 steel. In addition, the effect of tempering for similar times and temperatures on the properties of quenched plates was determined. For comparison, similar studies were conducted on an open-hearth and on an electric-furnace HY-80 steel. The tempering study showed that the 5Ni-Cr-Mo-V steel was more resistant to softening during long-time tempering than the HY-80 steels and that its Charpy V-notch energy absorption in the yieldstrength range 130 to 150 ksi was higher than those of the HY-80 steels.


Descriptors :   *STEEL , QUENCHING , SHIP HULLS , SHIP PLATES , SUBMARINE HULLS , TIME


Subject Categories : Metallurgy and Metallography


Distribution Statement : APPROVED FOR PUBLIC RELEASE