Recrystallisation at intercritical annealing in low carbon steels

被引：11
|
作者：
Maruyama, N. [1 ]
Ogawa, T. [1 ]
Takahashi, M. [1 ]
机构：
[1] Nippon Steel Corp Ltd, Steel Res Labs, 20-1 Shintomi, Futtsu 2938511, Japan
来源：
RECRYSTALLIZATION AND GRAIN GROWTH III, PTS 1 AND 2 | 2007年 / 558-559卷
关键词：
low carbon steels; dual phase steels; incomplete recrystallisation; subgrain growth; recovery; intercritical annealing;
D O I：
10.4028/www.scientific.net/MSF.558-559.247
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Subgrain growth in deformed ferrite and incomplete recrystallisation during intercritical annealing in low carbon (LC) steels was investigated by EBSD and FEGTEM/EDS. It was confirmed that fine dual phase (alpha+gamma) microstructures could be obtained even without the addition of microalloying elements such as Nb and Ti, if the steels were heated above Ac-1 temperature before the completion of primary recrystallisation and then intercritically annealed. The fine microstructure was found to be mainly due to the inhibition of primary recrystallisation, and also due to the inhibition of subgrain growth in deformed matrix by finely dispersed gamma phase formed during heating. Mn segregation at alpha/gamma interfaces seems to indicate that the kinetics of boundary migration in the existence of gamma is controlled by the volume diffusion of substitutional alloying elements across the alpha/gamma interfaces.
引用
收藏
页码：247 / +
页数：2
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