Ferrite Transformation Kinetics of Severely Hot-Deformed Austenite

被引：0
|
作者：
Yanagida, Akira [1 ]
Liu, J. Jinshan [2 ]
Yanagimoto, J. [3 ]
机构：
[1] Yokohama Natl Univ, Grad Sch Engn, Hodogya Ku, 79-5 Tokiwadai, Yokohama, Kanagawa 2408501, Japan
[2] TOPY Ind Ltd, Tech Res Dept, Aichi 4418510, Japan
[3] Univ Tokyo, Inst Ind Sci, Meguro Ku, Tokyo 1538505, Japan
来源：
THERMEC 2011, PTS 1-4 | 2012年 / 706-709卷
关键词：
kinetics; severely hot deformation; dislocation cellblock; ultra fine ferrite; LOW-CARBON STEEL; MICROSTRUCTURAL CHANGE; INCREMENTAL FORMULATION; GRAIN-REFINEMENT; FLOW-STRESS; DEFORMATION; PREDICTION; SIZE;
D O I：
10.4028/www.scientific.net/MSF.706-709.1562
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The ferrite transformation kinetics of severely hot-deformed austenite has been studied by considering ferrite nucleation from dislocation cell blocks inside austenite grains. The size of dislocation cell blocks and ferrite grain size just after phase transformation are acknowledged to be inversely proportional to the square root of dislocation density. It is found that the ferrite nucleation rate in this area can reach the saturated state at a high temperature just under Ae3, and the ferrite transformation finishes within a very short time. The kinetics of ferrite volume fraction and the ferrite grain growth after phase transformation for plain carbon (0.1%C, 0.2%Si, 1.0%Mn) steel have been studied using a THERMECMASTER hot-compression testing machine. These models can be applied to the hot and warm forming processes of plain carbon steel to predict the ferrite transformation from severely deformed austenite.
引用
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页码：1562 / +
页数：2
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