The kinetics of austenization process of T91 ferritic heat-resistant steel

被引：1
|
作者：
Zhang, Lifang [1 ,2 ]
Liu, Yongchang [2 ]
机构：
[1] Tianjin Univ Commerce, Sch Sci, Tianjin 300134, Peoples R China
[2] Tianjin Univ, Sch Mat Sci & Engn, Tianjin Key Lab Adv Jointing Technol, Tianjin 300072, Peoples R China
来源：
EQUIPMENT MANUFACTURING TECHNOLOGY AND AUTOMATION, PTS 1-3 | 2011年 / 317-319卷
基金：
中国国家自然科学基金;
关键词：
differential dilatometer; T91 ferritic heat-resistant steel; phase transformation model; TRANSFORMATION KINETICS; MASSIVE TRANSFORMATION; MARTENSITIC STEELS; AUSTENITE; TEMPERATURE; NUCLEATION; BEHAVIOR; RECIPES; GROWTH; ALLOY;
D O I：
10.4028/www.scientific.net/AMR.317-319.42
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
By fitting the calculated transformed fraction according to developed phase-transformation model to the experimental data obtained by differential dilatometry, the kinetic characteristics of the austenitization process in T91 steels have been investigated. According to the kinetic parameters fitted, we recognize that the nucleation and growth of austenite grain are mainly controlled by the diffusion of carbon in ferritic and austenite respectively. In addition, by increasing the diffusion active energy of carbon in austenite, carbides hinder the motion of interface and thus refine austenite grain.
引用
收藏
页码：42 / +
页数：2
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