Influence of pre-deformation on fatigue life of high strength steels by means of micromagnetic Barkhausen noise

被引：1

作者：

Sarafraz, Yashar ^{[1
]}

Brink, Malte ^{[1
]}

Baak, Nikolas ^{[1
]}

Koch, Alexander ^{[1
]}

Walther, Frank ^{[1
]}

机构：

[1] TU Dortmund Univ, Chair Mat Test Engn, Baroper Str 303, D-44227 Dortmund, Germany

来源：

MATERIALS TESTING | 2023年 / 65卷 / 05期

关键词：

Barkhausen noise; high-strength steels; load increase fatigue tests; micromagnetic testing method; nondestructive testing; DYNAMICS;

D O I：

10.1515/mt-2022-0425

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The micromagnetic Barkhausen noise as a nondestructive testing method was employed in this work to analyze the fatigue behavior of high-strength steels by subjecting them to multi-stage load increase fatigue tests. The micromagnetic Barkhausen noise energy (MBNEnergy) was measured during fatigue tests and coupled with digital image correlation to evaluate the effect of static and cyclic stress as well as local surface strain on MBNEnergy. The test samples were prepared from the forged bainite 18MnCrMoV6 and two ferrite-pearlite 38MnVS6 and 46MnVS5 steels. A part of the specimens was pre-strained before cyclic loading to analyze the effect of pre-deformation on cyclic strength considering measured MBNEnergy. A significant increase in MBNEnergy was observed by increasing the cyclic load on 18MnCrMoV6 specimens with bainite phases while this increase of MBNEnergy was not significant or was not changed for ferrite-pearlite steels 38MnVS6 and 46MnVS5.

引用

页码：641 / 651

页数：11

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