湘钢低碳贝氏体钢XDB685的研制  

Research and Production of a Low Carbon Bainitic Steel XDB685 at Xiangtan Steel

作　　者：夏政海[1] 曹波[1] 曹志强[1] 

机构地区：[1]湖南华菱湘潭钢铁有限公司湘钢科技开发中心,湘潭411101

出　　处：《特殊钢》2008年第3期60-62,共3页Special Steel

摘　　要：采用TMCP(Thermomechanical controlled Process)-RPC(Relaxed Process Control)-T(Tempering)工艺研制了低碳贝氏体钢XDB685[%:≤0.09C、1.20～1.60Mn、0.015～0.055Nb、0.008～0.030Ti、0.2～0.6(Cr+Ni+ Mo+B)]。检验结果表明,40～60 mm钢板的屈服强度≥600 MPa,抗拉强度≥700 MPa,-40℃冲击功约为200 J,并具有良好的焊接性能。A low carbon Bainitic steel XDB685 [ ≤0. 09C, 1.20 ～1.60Mn, 0. 015～0. 055Nb, 0. 008～0. 030Ti, 0. 2 ～0. 6（ Cr ＋ Ni ＋ Mo ＋ B） ] has developed by using TMCP （ Thermomechanical Controlled Process） - RPC （ Relaxed Process Control） - T （Tempering） technology. Test results showed that the yield strength of 40 ～ 60 mm steel plate was ≥600 MPa, the tensile strength was ≥700 MPa, the impact energy at -40 ℃ was about 200 J, and the steel plate had excellent weldability.

关 键 词：低碳贝氏体 高强度钢 TMCP 回火 

分 类 号：TG142.31[一般工业技术—材料科学与工程]