About this Abstract |
| Meeting |
MS&T26: Materials Science & Technology
|
| Symposium
|
New Frontiers in Physical Metallurgy of Steels
|
| Presentation Title |
Yield Stress Anisotropy of the Cold-Rolled Pearlitic Steel Sheet with Super High Strength |
| Author(s) |
Rintaro Ueji, Hidetoshi Somekawa, Akinobu Shibata, Tsubasa Tokuzumi |
| On-Site Speaker (Planned) |
Rintaro Ueji |
| Abstract Scope |
The cold-rolled pearlitic steel sheet is the solution for manufacturing highly strengthened sheets with fewer alloying elements. While the tensile strength of pearlitic steel sheets can exceed 1.8 GPa, many of their mechanical properties remain unclear. The most fundamental property for sheet products is yield stress anisotropy. This presentation demonstrates the unique anisotropy of cold-rolled pearlitic steel sheets (0.5 wt% C, 1.2 mm thickness). While the yield stress in the transverse direction was the highest of those measured in various directions on the sheet, the direction showing the maximum changed to the rolling direction when the specimen was cut from a sheet from which the surface regions (0.3 mm thickness) were removed. This difference indicates different internal stress conditions in sheet layers at different positions within the thickness. The contribution of these internal stresses to the preferable toughness of the pearlitic steel sheet is also discussed. |