EFFECT OF ROLLING RATIO ON THE ANISTROPY OF 5NICR-MO-V STEEL PLATES,
Abstract
For many applications, the mechanical properties of plate steels are specified in the direction of minimum rolling (weak direction) as well as in the direction of maximum rolling (strong direction). Such a requirement is specified (MIL-S-16216G) for HY-80 steel, the current submarine-hull steel. Therefore, a study was initiated to evaluate the effect of rolling ratio (from straightaway rolling to 1 to 1 cross rolling) on the anisotropy of 1-in. thick plates (rolled in the Laboratory from 7-1/4-in. thick slabs) of the 5Ni-Cr-Mo-V experimental HY-130/150 steel and the effects of subsequent heat treatments on this anisotropy. The results showed that the tensile properties of the as-rolled plates were not significantly affected by the amount of cross rolling except that the reduction of area was slightly higher in the strong direction than in the weak direction for cross-rolling ratios of 8 to 1 and higher. At cross-rolling ratios of 4 to 1 and lower, the plates exhibited no significant anistropy in the Charpy V-notch energy absorption at 0 F. However, at cross-rolling ratios of 8 to 1 and higher, the energy absorption in the strong direction was 40 to 58 ft-lb higher than that in the weak direction. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1964
- Accession Number
- AD0456358
Entities
People
- Lew F. Porter
- S. J. Manganello
Organizations
- U.S. Steel