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The Effect of Localized Vibration during Welding on the Microstructure and Mechanical Behavior of Steel Welds

1
School of Mechanical Engineering, Tel-Aviv University, Ramat Aviv, Tel Aviv 6997801, Israel
2
School of Mechanical Engineering, Afeka-Tel-Aviv Academic College of Engineering, Tel Aviv 6997801, Israel
3
Department of Materials Science and Engineering, Tel-Aviv University, Ramat Aviv, Tel Aviv 6997801, Israel
*
Author to whom correspondence should be addressed.
Materials 2019, 12(16), 2553; https://doi.org/10.3390/ma12162553
Received: 26 June 2019 / Revised: 19 July 2019 / Accepted: 28 July 2019 / Published: 10 August 2019
(This article belongs to the Section Manufacturing Processes and Systems)
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PDF [9701 KB, uploaded 10 August 2019]
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Abstract

The use of vibratory welding is treated with some caution in the industry due to inconsistent beneficiary results. Here, a partial explanation is suggested by the differentiation between global vibrational effects (GVEs) and local vibrational effects (LVEs), and the latter is investigated experimentally. Two structural plates of steel are welded at three frequency/amplitude combinations using manual gas metal arc welding in an experimental setup that ensures only LVEs. After welding, tensile tests, microhardness tests, and metallurgical characterization are performed locally in the different welding zones and the results are compared to the non-vibrated welds. Novel use of digital image correlation (DIC) is implemented in tensile testing of welded samples, thus enabling the separate determination of local mechanical properties of the base metal, heat-affected zone and fusion zone of the same weld. LVE is found not to promote any distinct difference in weld properties, at least within the vibrational regimes studied. Nevertheless, depending on geometry and structural response, it is explained how vibratory welding may promote residual stress relief due to GVEs of the welded structure. View Full-Text
Keywords: vibratory weld conditioning; local vibrational effect (LVE); global vibrational effect (GVE); vibratory stress relief (VSR); rigid-body motion; digital image correlation (DIC) vibratory weld conditioning; local vibrational effect (LVE); global vibrational effect (GVE); vibratory stress relief (VSR); rigid-body motion; digital image correlation (DIC)
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).
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Ingram, E.; Golan, O.; Haj-Ali, R.; Eliaz, N. The Effect of Localized Vibration during Welding on the Microstructure and Mechanical Behavior of Steel Welds. Materials 2019, 12, 2553.

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