摘要 |
<p>One aspect of the steel sheet having high Young's modulus includes in terms of mass %, C: 0.0005 to 0.30%, Si: 2.5% or less, Mn: 2.7 to 5.0%, P: 0.15% or less, S: 0.015% or less, Mo: 0.15 to 1.5%, B: 0.0006 to 0.01%, and A1: 0.15% or less, with the remainder being Fe and unavoidable impurities, wherein one or both of {110}<223> pole density and {110}<111> pole density in the 1/8 sheet thickness layer is 10 or more, and a Young's modulus in a rolling direction is more than 230 GPa. Another aspect of the steel sheet having high Young's modulus includes, in terms of mass %, C: 0.0005 to 0.30%, Si: 2.5% or less, Mn: 0.1 to 5.0%, P: 0.15% or less, S: 0.015% or less, Al: 0.15% or less, N: 0.01% or less, and further comprises one or two or more of Mo: 0.005 to 1.5%, Nb: 0.005 to 0.20%, Ti: at least 48/14xN (mass %) and 0.2% or less, and B: 0.0001 to 0.01%, at a total content of 0.015 to 1.91 mass %, with the remainder being Fe and unavoidable impurities, wherein the {110}<223> pole density and/or the {110}<111> pole density in the 1/8 sheet thickness layer is 10 or more, and a Young's modulus in a rolling direction is more than 230 GPa.</p> |
申请人 |
NIPPON STEEL & SUMITOMO METAL CORPORATION |
发明人 |
SUGIURA, NATSUKO;YOSHINAGA, NAOKI;HIWATASHI, SHUNJI;TAKAHASHI, MANABU;HANYA, KOJI;UNO, NOBUYOSHI;KANNO, RYOICHI;MIYASAKA, AKIHIRO;SENUMA, TAKEHIDE |