Modeling of kinetics of isothermal idiomorphic ferrite formation in a medium-carbon vanadium-titanium microalloyed steel

被引：23
|
作者：
Capdevila, C [1 ]
Caballero, FG [1 ]
De Andrés, CG [1 ]
机构：
[1] CSIC, CENIM, Ctr Nacl Invest Met, Dept Met Phys, E-28040 Madrid, Spain
来源：
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 2001年 / 32卷 / 07期
关键词：
D O I：
10.1007/s11661-001-0137-3
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The present article is concerned with the theoretical and experimental study of the growth kinetics of idiomorphic ferrite in a medium-carbon vanadium-titanium microalloyed steel. A theoretical model is presented to calculate the evolution of isothermal austenite-to-idiomorphic ferrite transformation with time for a given temperature. Moreover, the nature, size, and distribution of the inclusions that are responsible for the intragranular nucleation of idiomorphic ferrite have been characterized by scanning electron microscopy (SEM). Finally, the influence of austenite grain size in the isothermal decomposition of austenite in idiomorphic ferrite has been thoroughly analyzed. An excellent agreement (higher than 90 pet in R-2) has been obtained between the experimental and predicted values of the volume fraction of idiomorphic ferrite.
引用
收藏
页码：1591 / 1597
页数：7
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