| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a titanium-sheet, in which both of isotropic stretch formability and anisotropic stretch formability are excellent more than the formability of the conventional titanium-sheet, and to provide a method for manufacturing the titanium-sheet. <P>SOLUTION: The titanium-sheet contains, by mass%, 0.03 to <0.08% O, 0.015 to <0.055% Fe, 0.001 to <0.02% N, <0.015% (including 0%) C, and Ti and inevitable impurities as the balance, wherein [mass% of O]+0.12×[mass% of Fe] obtained based on O and Fe contents (mass%) is <0.080, and an area ratio of crystal grains (α phase) in a 1/4 t (t is a sheet thickness) part of a rolled layer from the surface, the α phase grains having the Schmidt factor of ä11-22}<11-23> twinning deformation at the tension in the rolling direction of <0.35, is ≤8%. <P>COPYRIGHT: (C)2012,JPO&INPIT |
