摘要
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 CCT diagrams of V-bearing microalloyed steels without and with deformation have been constructed by using the means of a Gleeble-3500 thermal mechanical simulator, and the effects of V and N content on mierostructure and CCT diagrams were analyzed. The results show that increasing N content in V-bearing microalloyed steels can accelerate the precipitation of V carbonitride, ferrite transformation, and refines the microstructure under room temperature. Furthermore, these effects are more obvious under deformed austenite eondition. Therefore, increasing N content can decrease the V content appropriately, which can save production eost.
出处
《金属热处理》
CAS
CSCD
北大核心
2013年第5期48-52,共5页
Heat Treatment of Metals
基金
河北省重大技术创新项目(09215139Z)
关键词
V微合金钢
CCT曲线
氮(N)
析出
V-bearing microalloyed steel
CCT diagrams
nitrogen （N）
precipitation
