A thermo-kinetic model for martensitic transformation kinetics in low-alloy steels

被引：18

作者：

Hong, Mei ^{[1
]}

Wang, Kang ^{[1
]}

Chen, Yuzeng ^{[1
]}

Liu, Feng ^{[1
]}

机构：

[1] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710072, Shaanxi, Peoples R China

来源：

JOURNAL OF ALLOYS AND COMPOUNDS | 2015年 / 647卷

关键词：

Martensitic phase transformation; Thermodynamics; Kinetics; Low-alloy steel; Autocatalytic; PLAIN CARBON-STEELS; MN-C; NUCLEATION; AUSTENITE; SYSTEM; GROWTH;

D O I：

10.1016/j.jallcom.2015.05.266

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

A thermo-kinetic model considering driving force-dependent activation energy, was developed, which can well describe the martensitic transformation upon continuous cooling in Fe-0.2C-1Mn-1Si (wt. %) model alloy and other low-alloy steels. Effects of prior austenite grain size (PAGS), as well as the autocatalytic nucleation, were illuminated. From the modeling, a phenomenological correlation between the driving force (thermodynamics) and the activation energy (kinetics) for martensitic transformation was established, suggesting that accompanying the increase of driving force, the activation energy for the transformation decreases. (C) 2015 Elsevier B.V. All rights reserved.

引用

页码：763 / 767

页数：5

共 36 条

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[Anonymous], 1970, PHASE T

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