In situ observation of fatigue crack retardation in banded ferrite-pearlite microstructure due to crack branching

被引：81

作者：

Korda, AA

Mutoh, Y

Miyashita, Y

Sadasue, T

Mannan, SL

机构：

[1] Nagaoka Univ Technol, Dept Mech Engn, Niigata 9402188, Japan

[2] JFE Steel Corp, Steel Res Lab, Chuo Ku, Chiba, Japan

[3] Indira Gandhi Ctr Atom Res, Kalpakkam 603102, Tamil Nadu, India

来源：

SCRIPTA MATERIALIA | 2006年 / 54卷 / 11期

关键词：

fatigue; scanning electron microscopy (SEM); pearlitic steel; crack branching;

D O I：

10.1016/j.scriptamat.2006.02.025

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This paper reports the results of in situ observation of fatigue crack growth in a ferrite-pearlite steel. Stress intensity factor range (AK) decreasing/increasing and constant-AK fatigue tests have been carried out. In banded pearlite orientation, intense crack branching was observed which leads to fatigue crack retardation. Crack closure during the test was monitored to understand the fatigue crack growth behaviour. (c) 2006 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1835 / 1840

页数：6

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