【摘 要】
：
Handan Iron and Steel production of high-strength structural car steel QStE500TM thin gauge products using Nb + Ti composite strengthening,with a small amount of Cr element to improve its hardenabilit
【机 构】
：
Technique center Handan Iron and Steel Co.,Ltd. Corporation Hebei steel and iron group Handan Hebei
论文部分内容阅读
Handan Iron and Steel production of high-strength structural car steel QStE500TM thin gauge products using Nb + Ti composite strengthening,with a small amount of Cr element to improve its hardenability,the process parameter control is inappropriate with Nb + Ti complex steel,it is easy to produce in the mixed crystal phenomenon,resulting in decreasing the toughness and uneven performance.In this paper,Gleeble 3500 thermal simulation testing machine for high-strength structural steel car QStE500TM product deformation austenite recrystallization behavior research,determined completely recrystallized,partial recrystallization and non-recrystallization region,provide theoretical basis and necessary data for reasonable controlled rolling process for production.
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