Microstructural and Residuals Stress Analysis of Friction Stir Welding of X80 Pipeline Steel Plates Using Magnetic Barkhausen Noise

Friction stir welding is a solid-state joining method conducted under large stress and strain conditions at low peak temperatures when compared to arc welding. Friction stir welding produces a large variety of microstructures and a M-shaped residual stress line profile along the cross-section of the...

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Bibliographic Details
Published in:Journal of nondestructive evaluation 2019-12, Vol.38 (4), p.1-9, Article 86
Main Authors: Avila, J. A., Conde, F. F., Pinto, H. C., Rodriguez, J., Grijalba, F. A. F.
Format: Article
Language:English
Subjects:
Arc welding
Barkhausen effect
Butt joints
Butt welding
Characterization and Evaluation of Materials
Classical Mechanics
Control
Dynamical Systems
Engineering
Friction stir welding
Hardness
High strength low alloy steels
Microstructure
Noise
Quality control
Residual stress
Solid Mechanics
Steel plates
Stress analysis
Structural steels
Vibration
Welded joints
X-ray diffraction
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Summary:Friction stir welding is a solid-state joining method conducted under large stress and strain conditions at low peak temperatures when compared to arc welding. Friction stir welding produces a large variety of microstructures and a M-shaped residual stress line profile along the cross-section of the welds. In this work, we present the use of magnetic Barkhausen noise to qualitatively assess the residual stress profile along the transverse direction of a two-pass friction stir welding butt joint on a X80 pipeline steel. Results were compared and correlated to X-ray diffraction, microstructural and hardness characterization. The peak position and the root mean square profiles of the magnetic Barkhausen noise reproduced the residual stress profile obtained by X-ray diffraction and the hardness profile, respectively. These results can be used for developing a qualitative quality control method for friction stir welding joints in other steels.
ISSN:0195-9298
1573-4862
DOI:10.1007/s10921-019-0625-2