RESEARCH AND PROCESS-OPTIMIZATION ON MIXED CRYSTAL CAUSED UNEVEN-PERFORMANCE OF HIGH-STRENGTH STRUCTURAL CAR STEEL QSTE500TM
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.
high-strength structural car steel mixed crystal structure thermal simulation Austenite recrystallization
LI Jian-wen LIU Hong-yan
Technique center Handan Iron and Steel Co.,Ltd. Corporation Hebei steel and iron group Handan Hebei 056015
国内会议
杭州
英文
669-675
2015-11-11（万方平台首次上网日期，不代表论文的发表时间）