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采用Gleeble-3500热模拟试验机,测试了两种低碳含钒微合金钢未变形及变形奥氏体的连续冷却转变(CCT)曲线,分析了V、N含量对相变的组织和CCT曲线的影响。结果表明,在V钢中,增加N含量,有利于V碳氮化合物析出,加速铁素体相变,并细化室温组织。而且变形使这种促进作用更加明显。在V钢中增加N含量,可以适当降低V添加量,从而降低生产成本。
The continuous cooling transformation (CCT) curves of undeformed and deformed austenite of two low carbon vanadium microalloyed steels were tested by Gleeble-3500 thermal simulator, and the microstructure and CCT curves of V, N content for phase transformation were analyzed. Impact. The results show that in V steel, increasing the content of N is favorable for the precipitation of V-C nitrides, accelerating the ferrite transformation and refining the texture at room temperature. And deformation to make this more obvious role in promoting. In V steel to increase the N content, you can properly reduce the amount of V added, thereby reducing production costs.