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。
Abstract
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+N+Mo+B)] has devebped by using TMCP(Themomechanical Controlecd Pnsess)- RPC(Rdlaxed Pncess Contal)"-T(Tempering)technology. Test esulls showed thet the yidld strengh of40~60 mm steel plate was ≥600 MPa