为探讨以V代C的可能性及V、N对冷拉过程中渗碳体的影响规律,对传统70级帘线钢进行了V、N微合金化.测量了不同冷拉应变量试样的拉伸及扭转性能;用透射电镜及能谱仪(TEM +EDS)分析了V、N相的析出;通过振动样品磁强仪(VSM)测量饱和磁化强度,预测了渗碳体溶解变化规律.结果表明:加V导致冷拉试样抗拉强度总体上呈升高趋势,延伸率稍微降低,扭转次数降低.加N导致冷拉试样抗拉强度总体上先升高后降低,延伸率升高,扭转次数降低.V音部分溶于铁素体,部分溶于渗碳体.N含量较低时,N固溶于铁素体;N含量增加到0.0082％,开始有V析出相在铁素体中析出.随V、N的增加,冷拉过程渗碳体趋于稳定.(70级+0.086％V)可代替80级帘线钢.
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