| Title |
Effect of Strain - Path Changes on Flow Behavior of Several Sheet Steels |
| Authors |
전기찬; William F . Hosford(Ghi Chan Jun) |
| Abstract |
Three sheet steels were uniaxially prestrained and tension tested in 15˚intervals to the prestrain axis In the subsequent tests after prestrains higher than about 7%, the residual uniform strains were very small in orientations beyond 30˚ to the prestrain axis. Total strains to failure also decreased in these noncoaxial orientations but the tendency was not as marked as in the uniform strain. The subsequent flow curves in the noncoaxial directions skewed no sharp yield points. The work-hardening rate was initially very high but decreased rapidly, which resulted in a large decrease in uniform strain. |