Quantitative evaluation of dynamic precipitation kinetics in a complex Nb-Ti-V microalloyed steel using electrical resistivity measurements

被引：5
|
作者：
Jung, Jae-Gil [1 ]
Bae, Jin-Ho [2 ]
Lee, Young-Kook [1 ]
机构：
[1] Yonsei Univ, Dept Mat Sci & Engn, Seoul 120749, South Korea
[2] POSCO, Tech Res Labs, Kwangyang 545090, South Korea
来源：
METALS AND MATERIALS INTERNATIONAL | 2013年 / 19卷 / 05期
关键词：
metals; deformation; precipitation; electrical resistivity; transmission electron microscopy; RECRYSTALLIZATION; CARBONITRIDES; AUSTENITE; VANADIUM;
D O I：
10.1007/s12540-013-5035-x
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The kinetics of dynamic precipitation in austenite of a complex Nb-Ti-V microalloyed steel during hot compression at 900 A degrees C with a strain rate of 6.7 s(-1) was quantitatively investigated through electrical resistivity measurements. The dynamic precipitation in the Nb-Ti-V microalloyed steel started at a strain of 0.15. The amount of tiny Nb-rich (Nb,Ti,V)C carbides, which were precipitated at crystal defects gradually increased up to 0.02 wt% at a maximum strain of 0.67. The electrical resistivity was successfully applied to the quantitative evaluation of dynamic precipitation kinetics in microalloyed steel by excluding the effects of crystal defects and interstitial atoms on the electrical resistivity.
引用
收藏
页码：1159 / 1162
页数：4
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