Continuous cooling transformation temperatures and microstructures of niobium bearing microalloyed steels

被引：13
|
作者：
Lee, YK [1 ]
Hong, JM
Choi, CS
Lee, JK
机构：
[1] Yonsei Univ, Dept Engn Met, Seoul 120749, South Korea
[2] Yonsei Univ, Res Inst Iron & Steel Technol, Seoul 120749, South Korea
[3] POSCO Tech Res Labs, Sheet Prod & Proc Res Grp, Pohang 790785, South Korea
来源：
PRICM 5: THE FIFTH PACIFIC RIM INTERNATIONAL CONFERENCE ON ADVANCED MATERIALS AND PROCESSING, PTS 1-5 | 2005年 / 475-479卷
关键词：
niobium content; microalloyed steel; cooling rate; microstructure; ferrite and bainite start temperatures;
D O I：
10.4028/www.scientific.net/MSF.475-479.65
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Effects of niobium content and cooling rate on ferrite and bainite start temperatures (Ar-3, Bs) and microstructural features have been studied in niobium. bearing ultralow carbon microalloyed steels. The Ar-3 and Bs temperatures decrease as niobium content or cooling rate is increased. The dependence of Ar-3 on cooling rate is greater than that of Bs in all niobium. contents. The bainitic ferrite laths become longer and narrower with increasing niobium content and cooling rate, and niobium also shows a tendency to decrease polygonal ferrite grain size.
引用
收藏
页码：65 / 68
页数：4
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