Microstructure features and carbon partitioning in low temperature bainitic steels: The effect of magnetic field

被引：3

作者：

Dong, Baoqi ^{[1
,2
]}

Hou, Tingping ^{[1
]}

Wu, Kaiming ^{[1
]}

Rolfe, Bernie ^{[2
]}

Kong, Lingxue ^{[2
]}

Cai, Minghui ^{[3
]}

Hodgson, Peter ^{[1
,2
]}

机构：

[1] Wuhan Univ Sci & Technol, Int Res Inst Steel Technol, Hubei Collaborat Innovat Ctr Adv Steels, State Key Lab Refractories & Met, Wuhan 430081, Peoples R China

[2] Deakin Univ, Inst Frontier Mat, Geelong, Vic 3217, Australia

[3] Northeastern Univ, Sch Mat Sci & Engn, Shenyang 110819, Peoples R China

来源：

MATERIALS CHARACTERIZATION | 2023年 / 196卷

基金：

中国国家自然科学基金;

关键词：

High magnetic field; Low temperature bainitic steel; Microstructure; Carbon partitioning; Phase transformation; MARTENSITIC-TRANSFORMATION; PEARLITE TRANSFORMATION; MECHANICAL-PROPERTIES; FERRITE; KINETICS; AUSTENITE;

D O I：

10.1016/j.matchar.2022.112635

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of a 12 Tesla magnetic field on the microstructure and carbon partitioning in a low temperature bainitic steel isothermally transformed at 300 degrees C was investigated. The application of the high magnetic field significantly accelerated the formation of bainitic ferrite. The acceleration can be attributed to additional magnetic Gibbs free energy (Delta GM). Compared with a sample transformed without the magnetic field, the bainitic ferrite laths were refined and the distribution became more uniform; the alignment and orientation of the laths was more regular in a given austenite grain. Meanwhile, a high magnetic field promotes carbon partitioning from bainitic ferrite to retained austenite (RA) and increases the carbon accommodation of the retained austenite.

引用

页数：10

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