[Kovove materialy - Metallic materials]
    Mon - November 11, 2024 - 02:51 No. of hits : 1797367 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 48 (2010), Issue 3

Minimum fusion zone size required to ensure pullout failure mode of resistance spot welds during tensile-shear test
POURANVARI, M., MARASHI, S. P. H.
vol. 48 (2010), no. 3, pp. 197 - 202
DOI: 10.4149/km_2010_3_197

Abstract
The effect of metallurgical factors (e. g. weld microstructure) on the failure mode of resistance spot welds is studied. In the light of failure mechanism of the spot welds, a simple analytical model is proposed to estimate minimum fusion zone size to ensure pull out failure mode of resistance spot welds during tensile-shear test. According to this model, ratio of fusion zone hardness to pullout failure location hardness and volume fraction of porosity in the fusion zone are the key metallurgical factors governing failure mode of spot welds during tensile-shear test, in addition to sheet thickness. Finally, the proposed model is compared with experimental results.

Key words
resistance spot welding, failure mode, fusion zone size

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


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