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本试验借助光学显微镜,分析型透射电镜、电子探针等,研究了降低微合金化钢中的含碳量、复合加入Nb 和Ti、采取控制轧制和控制轧后控制冷却工艺,对低碳锰钢综合机械性能的影响。试验结果表明,在鞍钢现有生产条件下,0.06～0.09%C、1.0～1.3%Mn、0.03～0.05%Nb、0.01～0.03%Ti 钢,在具有一般轧制力的轧机上于930～980℃终轧并进行在线控制冷却,可获得σ_s>450MPa、α_(k(v))>50J/cm~2综合性能良好的板材.
In this experiment, the content of carbon in micro-alloyed steels was reduced by means of optical microscope, analytical transmission electron microscope and electron probe. Nb and Ti were added in combination with controlled rolling and controlled cooling after rolling. Effect of manganese steel on mechanical properties. The test results show that in the current production conditions of Anshan Iron and Steel, 0.06 ~ 0.09% C, 1.0 ~ 1.3% Mn, 0.03 ~ 0.05% Nb, 0.01 ~ 0.03% Ti steel rolling mill in the general with 930 ~ 980 ℃ final cooling and on-line controlled cooling can be obtained σ_s> 450MPa, α_ (k (v))> 50J / cm ~ 2 good overall performance of the plate.