Continuous cooling transformation behaviour of Microalloy steels containing Ti, Nb, Mn and Mo

被引：70
|
作者：
Manohar, PA [1 ]
Chandra, T [1 ]
Killmore, CR [1 ]
机构：
[1] PORT KEMBLA STEEL WORKS,BHP STEEL FLAT PROD DIV,PORT KEMBLA,NSW,AUSTRALIA
来源：
ISIJ INTERNATIONAL | 1996年 / 36卷 / 12期
关键词：
CCT diagrams; dilatometry; thermomechanical processing; microalloyed steels; gamma/alpha transformation kinetics;
D O I：
10.2355/isijinternational.36.1486
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Continuous cooling transformation diagrams are determined for microalloyed steels containing Ti, Nb, Mn and Mo in undeformed as well as in thermomechanically processed conditions using dilatometry. Effects of thermomechanical processing, cooling rate and Nb content on gamma/alpha transformation kinetics are presented. Thermomechanical processing is found to accelerate the onset of gamma/alpha transformation (gamma transformation start temperature, Ar-3, is raised). However, the progress of gamma/alpha transformation is retarded considerably in deformed samples. Increase in cooling rate lowers Ar-3 significantly and accelerates the progress of transformation. Nb lowers Ar-3 undeformed austenite but raises Ar-3 of thermomechanically processed austenite.
引用
收藏
页码：1486 / 1493
页数：8
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