Effect of process parameters on the strength of resistance spot welds in 6082-T6 aluminium alloy

Paulo Jorge Da Silva bartolo; A M Pereira; J M Ferreira; A Loureiro; J D M Costa; P J B??rtolo

doi:10.1016/j.matdes.2009.11.052

Effect of process parameters on the strength of resistance spot welds in 6082-T6 aluminium alloy

Paulo Jorge Da Silva bartolo, A M Pereira, J M Ferreira, A Loureiro, J D M Costa, P J B??rtolo

Research output: Contribution to journal › Article › peer-review

Abstract

In this study the microstructural and mechanical behaviour of resistance spot welds (RSW) done on aluminium alloy 6082-T6 sheets, welded at different welding parameters, is examined. Microstructural examinations and hardness evaluations were carried out in order to determine the influence of welding parameters on the quality of the welds. The welded joints were subjected to static tensile-shear tests in order to determine their strength and failure mode. The increase in weld current and duration increased the nugget size and the weld strength. Beyond a critical nugget diameter the failure mode changed from interfacial to pullout. Taking into consideration the sheet thickness and the mechanical properties of the weld, a simple model is proposed to predict the critical nugget diameter required to produce pull-out failure mode in undermatched welds in heat-treatable aluminium alloys.

Original language	English
Pages (from-to)	2454-2463
Number of pages	10
Journal	Materials \& Design
Volume	31
Issue number	5
DOIs	https://doi.org/10.1016/j.matdes.2009.11.052
Publication status	Published - May 2010

Keywords

Failure analysis (H)
Mechanical properties (E)
Welding (D)

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10.1016/j.matdes.2009.11.052

http://www.sciencedirect.com/science/article/pii/S0261306909006724

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title = "Effect of process parameters on the strength of resistance spot welds in 6082-T6 aluminium alloy",

abstract = "In this study the microstructural and mechanical behaviour of resistance spot welds (RSW) done on aluminium alloy 6082-T6 sheets, welded at different welding parameters, is examined. Microstructural examinations and hardness evaluations were carried out in order to determine the influence of welding parameters on the quality of the welds. The welded joints were subjected to static tensile-shear tests in order to determine their strength and failure mode. The increase in weld current and duration increased the nugget size and the weld strength. Beyond a critical nugget diameter the failure mode changed from interfacial to pullout. Taking into consideration the sheet thickness and the mechanical properties of the weld, a simple model is proposed to predict the critical nugget diameter required to produce pull-out failure mode in undermatched welds in heat-treatable aluminium alloys.",

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author = "{Da Silva bartolo}, {Paulo Jorge} and Pereira, {A M} and Ferreira, {J M} and A Loureiro and Costa, {J D M} and B??rtolo, {P J}",

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doi = "10.1016/j.matdes.2009.11.052",

language = "English",

volume = "31",

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TY - JOUR

T1 - Effect of process parameters on the strength of resistance spot welds in 6082-T6 aluminium alloy

AU - Da Silva bartolo, Paulo Jorge

AU - Pereira, A M

AU - Ferreira, J M

AU - Loureiro, A

AU - Costa, J D M

AU - B??rtolo, P J

PY - 2010/5

Y1 - 2010/5

N2 - In this study the microstructural and mechanical behaviour of resistance spot welds (RSW) done on aluminium alloy 6082-T6 sheets, welded at different welding parameters, is examined. Microstructural examinations and hardness evaluations were carried out in order to determine the influence of welding parameters on the quality of the welds. The welded joints were subjected to static tensile-shear tests in order to determine their strength and failure mode. The increase in weld current and duration increased the nugget size and the weld strength. Beyond a critical nugget diameter the failure mode changed from interfacial to pullout. Taking into consideration the sheet thickness and the mechanical properties of the weld, a simple model is proposed to predict the critical nugget diameter required to produce pull-out failure mode in undermatched welds in heat-treatable aluminium alloys.

AB - In this study the microstructural and mechanical behaviour of resistance spot welds (RSW) done on aluminium alloy 6082-T6 sheets, welded at different welding parameters, is examined. Microstructural examinations and hardness evaluations were carried out in order to determine the influence of welding parameters on the quality of the welds. The welded joints were subjected to static tensile-shear tests in order to determine their strength and failure mode. The increase in weld current and duration increased the nugget size and the weld strength. Beyond a critical nugget diameter the failure mode changed from interfacial to pullout. Taking into consideration the sheet thickness and the mechanical properties of the weld, a simple model is proposed to predict the critical nugget diameter required to produce pull-out failure mode in undermatched welds in heat-treatable aluminium alloys.

KW - Failure analysis (H)

KW - Mechanical properties (E)

KW - Welding (D)

U2 - 10.1016/j.matdes.2009.11.052

DO - 10.1016/j.matdes.2009.11.052

M3 - Article

VL - 31

SP - 2454

EP - 2463

JO - Materials \& Design

JF - Materials \& Design

IS - 5

ER -

Effect of process parameters on the strength of resistance spot welds in 6082-T6 aluminium alloy

Abstract

Keywords

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