Comparison of Two Procedures for Reliable Measurement of Residual Stress in Carburized Steels by Magnetic Barkhausen Noise Method

Date

2018-06-15

Author

Kaleli, Tuğçe
Gür, Cemil Hakan

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Sign, magnitude and distribution of residual stresses are extremely important for service performance and useful life of engineering components. Hence, monitoring their variation (qualitative approach) and measuring their magnitudes (quantitative approach) are critical issues in the manufacturing chain. Various destructive and semi-destructive methods exist to measure residual stresses; however, a rapid and reliable nondestructive method will be more appropriate for industrial applications. Recently the magnetic Barkhausen noise (MBN) method has gained importance for non-destructive determination of residual stresses in ferromagnetic materials. However, this method has some challenges due to mixed influences of residual stress and microstructure that require careful pre-calibration and verification procedures for obtaining reliable quantitative results. This paper presents the comparison of two MBN procedures for measurement of surface residual stresses in the carburized steels. Carburizing is a widely used surface treatment process that creates compressive residual stress state at the surface-near region, and thus, it remarkably improves the wear resistance and fatigue performance of low-C low-alloys steels. In the experiments 19CrNi5H and 21NiCrMo2 samples were carburized for at 900oC for different periods, and then, tempered in the range of 180oC and 600oC. In the first procedure, the MBN parameters were optimized and then MBN-r.m.s. values were correlated with the results of XRD stress measurements. In the second procedure, a pre-calibration technique based on instantaneous MBN measurements on the samples during tension/compression loading was applied. The results of two procedures were compared and discussed by focusing on reliability and applicability of the MBN method for measurement of residual stresses in industry.

URI

http://www.ndt.net/?id=22737
https://hdl.handle.net/11511/84950

Conference Name

12th European Conf. for Nondestructive Testing, (11 - 15 Haziran 2018)

Collections

Department of Metallurgical and Materials Engineering, Conference / Seminar

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Comparison of Two Procedures for Reliable Measurement of Residual Stress in Carburized Steels by Magnetic Barkhausen Noise Method Gür, Cemil Hakan; Kaleli, Tuğçe (2018-06-15) Sign, magnitude and distribution of residual stresses are extremely important for service performance and useful life of engineering components. Hence, monitoring their variation (qualitative approach) and measuring their magnitudes (quantitative approach) are critical issues in the manufacturing chain. Various destructive and semi-destructive methods exist to measure residual stresses; however, a rapid and reliable nondestructive method will be more appropriate for industrial applications. Recently ...
Review of Residual Stress Measurement by Magnetic Barkhausen Noise Technique Gür, Cemil Hakan (2018-01-01) Determination of residual stress state is important for quality, integrity, and service performance of the components and structures. Almost all manufacturing processes cause considerable amounts of residual stress; thus, any process or product design ignoring it involves a risk for distortion or early failure. Among the existing methods, the magnetic Barkhausen noise method has been gaining attention for measuring residual stresses nondestructively in ferromagnetic materials. It is sensitive to the interac...
PREDICTION OF SURFACE RESIDUAL STRESSES IN BUTT-WELDED STEEL PLATES BY MAGNETIC BARKHAUSEN NOISE ANALYSIS Gür, Cemil Hakan; Yelbay, Hasan İlker; Çam, İbrahim (2010-06-11) Residual stresses have significant inflences on the service performance of the welded components. Various studies have been continuing to develop nondestructive methods for determination of residual stresses with portable equipment and short measurement time, as an alternative to the existing techniques such as X-ray diffraction. This study aims to investigate the applicability of Magnetic Barkhausen Noise method on predicting surface residual stresses in the welded steel plates.
Determination of surface residual stresses in carburised AISI 8620 steel by the magnetic Barkhausen noise method Kaleli, T.; Gür, Cemil Hakan (British Institute of Non-Destructive Testing (BINDT), 2020-07-01) Management of the residual stress state is vital for the design and production stages of carburised components in order to satisfy the technical requirements related to performance, fatigue behaviour and useful lifetime. This enforces the use of practical, reliable and time- and cost-effective stress measurement methods by manufacturers. This study aims to investigate the efficiency of the magnetic Barkhausen noise (MBN) method in rapid non-destructive determination of surface residual stresses in carburise...
Investigating the correlation between magnetic Barkhausen noise emission and the fatigue life of shot-peened AISI 4140 steel Çalışkan, S.; Gür, Cemil Hakan (British Institute of Non-Destructive Testing (BINDT), 2019-01-01) The performance of engineering components under conditions of fatigue can be improved by shot peening. The location and magnitude of the highest residual compressive stress, the depth of the compression zone and the stability of the residual stress state during cyclic loading are critical parameters for maximum utilisation of the advantageous influence of shot peening on fatigue performance. For accurate assessment of fatigue lifetime, residual stresses should be considered because they are algebraically su...

Citation Formats

T. Kaleli and C. H. Gür, “Comparison of Two Procedures for Reliable Measurement of Residual Stress in Carburized Steels by Magnetic Barkhausen Noise Method,” presented at the 12th European Conf. for Nondestructive Testing, (11 - 15 Haziran 2018), Gothenburg, İsveç, 2018, Accessed: 00, 2021. [Online]. Available: http://www.ndt.net/?id=22737.