Low-temperature nanostructured bainite transformation: The effect of magnetic field

被引：14
作者：
Dong, B. Q. [1 ]
Hou, T. P. [1 ]
Wu, K. M. [1 ]
You, Z. Q. [1 ]
Li, Z. H. [1 ]
Zhang, G. H. [1 ]
Lin, H. F. [1 ]
机构：
[1] Wuhan Univ Sci & Technol, Int Res Inst Steel Technol, State Key Lab Refractories & Met, Hubei Prov Key Lab Syst Sci Met Proc, Wuhan 430081, Hubei, Peoples R China
来源：
MATERIALS LETTERS | 2019年 / 240卷
基金：
中国国家自然科学基金;
关键词：
High magnetic field; Nanostructured bainite; Microstructure; Phase transformation; Gibbs free energy; Magnetic moment; FERRITE;
D O I：
10.1016/j.matlet.2018.12.118
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We have elucidated the determining role of high magnetic field on low-temperature nanostructured bainite transformation at an isothermal temperature of 300 degrees C. The application of 12 Tesla magnetic field increased the bainite volume percentage by 193% and 106% after isothermal treatment at 300 degrees C for 1 and 5 h, respectively. It indicated that low-temperature nanostructured bainite transformation is significantly accelerated by a high magnetic field. The magnetic moment of bainitic ferrite was 1.99 mu(B) under the condition of high magnetic field and 300 degrees C. Thus, the magnetic Gibbs free energy of bainite under 12 Tesla is -133.90 J/mol, leading to increase in the driving force for transformation of austenite to bainite transformation. (C) 2019 Elsevier B.V. All rights reserved.
引用
收藏
页码：66 / 68
页数：3
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