摘要
通过Als-[O]平衡和Ca_残-Als平衡的热力学计算,研究了湘钢Nb-Ti微合金化E级船板钢(0.10%C)两种钙处理工艺:两步法(LF+喂Ca-Si线-VD+喂Ca-Si线)和一步法(LF-VD+喂Ca-Si线)对钢中夹杂物形态和力学性能的影响。结果表明,当钢中S≤0.003%,T[O]≤15×10^(-6),Als控制在0.02%～0.04%时,进行一步法钙处理后钢中≤4μm的球形夹杂物达93%,-40℃的横向冲击功为156～240J。
The effect of two processes of calcium treatment： two step process （ LF ＋ Ca-Si wire feeding - VD ＋ Ca- Si wire feeding） and one step process （ LF - VD ＋ Ca-Si wire feeding） at Xiangsteel on morphology of inolusions and mechanical properties of Nb-Ti mieroalloying grade E hull steel （0. 10% C） has been studied by thermodynamic calculation on equilibrium of Ms - [O] and equilibrium of Caresidual- Als. Results showed that as S in steel ≤0. 003%, T[O]≤15 × 10^-6, and controlled Als in steel 0. 02% -0. 04%, after one step process of calcium treatment the ≤4 pan spherical inelusiom in steel were up to 93%, and cross impact energy at -40 ℃ was 156-240 J.
出处
《特殊钢》
北大核心
2007年第6期46-48,共3页
Special Steel
关键词
E级船板钢
Ca处理
力学性能
Grade E Hull Plate, Ca Treatment, Mechanical Properties
