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Resistance Spot Weldability of Galvanize Coated and Uncoated TRIP Steels

Department of Manufacturing Engineering, Karabük University, Karabük 78050, Turkey
Author to whom correspondence should be addressed.
Academic Editors: Halil Ibrahim Kurt, Adem Kurt and Necip Fazıl Yılmaz
Metals 2016, 6(12), 299;
Received: 27 October 2016 / Revised: 16 November 2016 / Accepted: 21 November 2016 / Published: 28 November 2016
(This article belongs to the Special Issue Selected Papers from ICWET16)
PDF [2891 KB, uploaded 28 November 2016]


In this study, the resistance spot weldabilty of zinc galvanize-coated and uncoated TRIP800 steels was investigated in detail. Depending on the welding parameters such as welding current and welding time, the effects of zinc coating on the weld nugget geometry, the tensile shear strength, the failure modes, the hardness, and the microstructure of the resistance spot-welded sample were studied, and the results are compared with that of uncoated weldment. The coating on the surface of the TRIP steel causes a decrease in the weld nugget size and tensile shear strength of the weldment, and it changes to failure mode of the test sample from pullout to interfacial or partial interfacial fracture. As compared with the uncoated sample, the galvanized TRIP800 steel weldment has required a larger critical nugget size for achieving the desired pullout fracture mode and acceptable tensile shear strength. View Full-Text
Keywords: TRIP800 steel; resistance spot welding; galvanized coating; failure mode TRIP800 steel; resistance spot welding; galvanized coating; failure mode

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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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Ertek Emre, H.; Kaçar, R. Resistance Spot Weldability of Galvanize Coated and Uncoated TRIP Steels. Metals 2016, 6, 299.

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