10.3969/j.issn.1003-8620.2014.01.017
非调质钢C38N2 Φ170 mm热轧材连续冷却转变的研究
采用热膨胀法和金相法,通过Gleeble-1500热模拟试验机试验研究了非调质钢C38N2(/%:0.38C,0.55Si,1.42Mn,0.011P,0.047S,0.03 Nb,0.015Ti,0.022A1,0.020N)在冷却速度0.5~20℃/s时的动态(950℃,变形速率5 s-1,50%变形,冷却至室温)和静态(未变形,880℃冷却至室温)的连续冷却转变(CCT)曲线.结果表明,未变形时非调质钢C38N2当冷却速度0.5℃/s时为铁素体-珠光体组织,3.0℃/s时为贝氏体+铁素体-珠光体组织,>3.0~11℃/s时为贝氏体+马氏体组织,15℃/s时为马氏体组织;当冷却速度≤11℃/s时动态CCT的相变开始温度均大于静态CCT相变开始温度.
非调质钢C38N2、相变、连续冷却转变(CCT)曲线
35
TG3;TG1
2014-02-26(万方平台首次上网日期,不代表论文的发表时间)
共4页
57-60