Fatigue Cracking Characterization of High Grade Non-oriented Electrical Steels

被引：2

作者：

Du Liying ^{[1
,2
]}

Zhou Guifeng ^{[1
]}

Liu Jing ^{[1
]}

Shi Wenmin ^{[2
]}

Bi Yunjie ^{[1
,2
]}

Cheng Zhaoyang ^{[1
]}

Xue Huan ^{[2
]}

机构：

[1] Wuhan Univ Sci & Technol, State Key Lab Refractories & Met, Wuhan 430081, Hubei, Peoples R China

[2] Wuhan Iron & Steel Co Ltd, R&D Ctr, Baosteel Cent Res Inst, Wuhan Branch, Wuhan 430080, Hubei, Peoples R China

来源：

JOURNAL OF WUHAN UNIVERSITY OF TECHNOLOGY-MATERIALS SCIENCE EDITION | 2017年 / 32卷 / 06期

关键词：

non-oriented electrical steel; fatigue behavior; crack initiation; crack propagation; dislocation structure; STAINLESS-STEEL; AISI; 316L; GROWTH;

D O I：

10.1007/s11595-017-1749-9

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The fatigue behavior of 30WGP1600 non-oriented electrical steel, which is generally used in the motors for electrical vehicles, was investigated. The detailed microstructure and dislocation configurations of the fatigue specimens were examined by OM, SEM, and TEM. The test results showed that fatigue cracks were commonly initiated from the surface grain boundaries, crystals plane, and inclusions. The rapid fatigue crack propagation was characterized by transgranular cleavage fracture, while most transient fracture exhibited ductile tearing characteristics. After cyclic deformation of the non-oriented electrical steels, various dislocation structures, such as short and thick lines, veins, persistent slip bands, cells, and labyrinth, were observed.

引用

页码：1329 / 1335

页数：7

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