Characterization of the Residual Stresses in Plastically Deformed Ferrite-Martensite Steels Using Barkhausen Noise Measurements

In this work, we show that the measurement of the Barkhausen noise allows the residual stresses in each of the two phases of ferrite-martensite steels to be characterized. We have first studied the effect of a tensile and a compressive stress on the Barkhausen noise signature. We observed that for a ferrite-martensite steel, the application of a tensile stress increases the Barkhausen activity of the martensite and ferrite phases, whereas a compressive one reduces it. In a second time, we induced residual stresses by applying a plastic deformation to ferrite-martensite steels. After a tensile plastic deformation, we observed that (i) compressive residual stresses appear in ferrite, and (ii) tensile residual stresses appear in martensite. An opposite behavior is observed after a compressive plastic deformation. These results show that the Barkhausen noise measurement makes it possible to highlight in a nondestructive way the distribution of the stresses in each of the two phases of a ferrite-martensite steel. This result could be used to characterize industrial Dual- Phases steels that are plastically deformed during mechanical processes.

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Characterization of Metallurgical Transformations in Multi-Phase High Strength Steels by Barkhausen Noise Measurement

Materials Science Forum ◽

10.4028/www.scientific.net/msf.539-543.4283 ◽

2007 ◽

Vol 539-543 ◽

pp. 4283-4288

Author(s):

Aurélie Hug-Amalric ◽

Xavier Kleber ◽

Jacques Merlin ◽

Hélène Petitgand ◽

Philip Meilland

Keyword(s):

High Strength Steels ◽

High Strength ◽

Residual Austenite ◽

Noise Measurement ◽

Barkhausen Noise ◽

Dual Phase ◽

Magnetic Barkhausen Noise ◽

Noise Measurements ◽

Multi Phase

The potentialities of using the magnetic Barkhausen noise measurement in characterization of metallurgical transformations have been highlighted in multi-phase High Strength (HS) steels. This kind of steels are composed of different metallurgical constituents, such as ferrite, bainite, martensite or residual austenite. Recently, we found that it was possible to assess the proportion of phases in ferrite-martensite steels and in industrial Dual-Phase steels too. In this work, we show that the Barkhausen noise measurements can be also suitable to follow bainitic transformation in a TRIP steel.

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Characterization of Austempered Ductile Iron Through Barkhausen Noise Measurements

Journal of Nondestructive Evaluation ◽

10.1023/b:jone.0000022032.66648.c5 ◽

2003 ◽

Vol 22 (4) ◽

pp. 127-139 ◽

Cited By ~ 6

Author(s):

C. D'Amato ◽

C. Verdu ◽

X. Kleber ◽

G. Regheere ◽

A. Vincent

Keyword(s):

Ductile Iron ◽

Austempered Ductile Iron ◽

Barkhausen Noise ◽

Noise Measurements

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Characterization of pure iron and (130p.p.m.) carbon–iron binary alloy by Barkhausen noise measurements: study of the influence of stress and microstructure

Acta Materialia ◽

10.1016/s1359-6454(98)00205-5 ◽

1998 ◽

Vol 46 (14) ◽

pp. 4873-4882 ◽

Cited By ~ 95

Author(s):

C Gatelier-Rothea ◽

J Chicois ◽

R Fougeres ◽

P Fleischmann

Keyword(s):

Binary Alloy ◽

Pure Iron ◽

Barkhausen Noise ◽

Noise Measurements ◽

Carbon Iron ◽

Iron Binary Alloy

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Characterization of Residual Stresses and Microstructural by Technique of Magnetic Barkhausen Noise of API 5L X80 Steel Heat Treatment

Materials Science Forum ◽

10.4028/www.scientific.net/msf.869.556 ◽

2016 ◽

Vol 869 ◽

pp. 556-561 ◽

Cited By ~ 1

Author(s):

Sandro Rosa Correa ◽

Marcos Flavio de Campos ◽

C.J. Marcelo ◽

José Adilson de Castro ◽

Maria Cindra Fonseca ◽

...

Keyword(s):

Residual Stresses ◽

Barkhausen Noise ◽

Magnetic Barkhausen Noise ◽

X Ray Diffraction ◽

X80 Steel ◽

Work Samples ◽

Non Destructive ◽

Different Levels ◽

Steel Heat

Residual stresses typically are generated during the manufacturing process of mechanical components. The non-destructive techniques are quite sensitive to these residual stresses, and to microstructural changes resulting from thermal cycling. In this work, samples of API 5L X80 steel were exposed to several conditions of cooling, under water, air and oil, thus obtaining different microstructures and different levels of residual stresses. The residual stress measurements were made using the methods of Magnetic Barkhausen Noise and X-ray diffraction.

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Characterization of Amorphous, Magnetic Fe-Si-B Ribbons

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.543.476 ◽

2013 ◽

Vol 543 ◽

pp. 476-478

Author(s):

Eirini Varouti

Keyword(s):

Structural Changes ◽

Amorphous State ◽

Barkhausen Noise ◽

Chemical Compositions ◽

Magnetic Barkhausen Noise ◽

X Ray Diffraction ◽

Scanning Calorimetry ◽

Noise Measurements ◽

Shed Light

The aim of this study is to contribute to a better understanding of the properties, structure and crystallization process of the amorphous Fe-based ribbon with the following chemical compositions: Fe80SixB20-x (x=5,6,8) and Fe75Si15B10. Thermal analysis, including Differential Scanning Calorimetry and Magnetic-Thermogravimetric Analysis, were used to shed light in the thermal stability and structural changes taking place during the transformation from the amorphous state to the crystalline state. The arising microstructure was observed via X-ray diffraction. Finally, Magnetic Barkhausen Noise measurements took place so as conclusions to be derived relevant to the dependence between the parameters of the Magnetic Barkhausen Noise and the chemical composition of the amorphous ribbons.

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Evaluating the residual stresses in welding from Barkhausen noise measurements / Die Bestimmung der Schweißeigenspannungen mit Hilfe der Messung des Barkhausen-Rauschens / Évaluation des contraintes residuelles dans soudage avec mesures des bruits de Barkhausen

Materials Testing ◽

10.1515/mt-1980-220504 ◽

1980 ◽

Vol 22 (5) ◽

pp. 196-200

Author(s):

L. P. Karjalainen ◽

M. Moilanen ◽

R. Rautioaho

Keyword(s):

Residual Stresses ◽

Barkhausen Noise ◽

Noise Measurements

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Characterization of Softmagnetic Thin Layers using Barkhausen Noise Microscopy

MRS Proceedings ◽

10.1557/proc-674-u1.5 ◽

2001 ◽

Vol 674 ◽

Author(s):

Jochen Hoffmann ◽

Norbert Meyendorf ◽

Iris Altpeter

Keyword(s):

Residual Stresses ◽

Magnetic Hysteresis ◽

Ferromagnetic Material ◽

Heat Treatment Condition ◽

Thin Layers ◽

Barkhausen Noise ◽

Layer System ◽

Structure Thickness ◽

Inductive Sensors

ABSTRACTFerromagnetic materials are essential for data recording devices. For inductive or magnetoresistive (MR) sensors softmagnetic thin layer systems are used. Optimal performance of these layers requires homogeneous magnetic properties, especially a pronounced uniaxial magnetic anisotropy. Furthermore, microstructural imperfections and residual stresses influence the magnetic structure in the layer system.Barkhausen Noise Microscopy enables the characterization of such thin layers. By cycling the magnetic hysteresis of ferromagnetic material electrical voltages (the Barkhausen noise) are induced in an inductive sensor. Miniaturization of the sensor and the scanning probe technique provides resolution down to few micrometers. Two materials were examined in terms of their structure, thickness, residual stresses and heat treatment condition: Sendust, used in inductive sensors and nanocrystalline NiFe, used in MR-sensors. In quality correlations to Barkhausen noise parameters were found. For representative sample a quantification of residual stress distribution could be established employing X-ray stress analysis.

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