10.3969/j.issn.1003-8620.2017.01.016
动车组车轴用钢EA1N的热压缩流变应力行为
试验用EA1N钢(/%:0.35C,0.30Si,0.90Mn,0.013P,0.008S,0.15Cr,0.10Ni,0.10Cu,0.04V,0.04Al)的冶金流程为60 t EBT EAF-LF-VD-下铸8.4t方锭-轧成150mm× 150 mm方坯.采用Gleeble-3800型热模拟机试验研究了EA1N钢在800 ~1 300℃、应变速率0.01~ 10 s-1时的热压缩变形,分析该钢变形时的流变应力、应变速率及变形温度之间的关系,得出流变应力方程.结果表明,EA1N钢在热压缩变形时流变应力随应变速率提高而增大,随变形温度升高而降低,当温度高于1 100℃和应变速率大于1 s-1时,该钢流变曲线呈现明显的动态再结晶特征.EA1N钢的热变形激活能为392.43 kJ/mol.
EA1N车轴钢、热压缩变形、变形激活能、本构方程
38
TG1;TG3
2017-02-27(万方平台首次上网日期,不代表论文的发表时间)
共3页
63-65