Static and fatigue behavior of spot-welded 5182-0 aluminum alloys sheet

Journal Article · Sun Feb 28 23:00:00 EST 1999 · Welding Journal

OSTI ID:334096

Gean, A; Kucza, J C; Ehrstrom, J C ^[1]; Westgate, S A ^[2]

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1. Pechiney CRV, Voreppe (France)
2. TWI, Abington (United Kingdom)

There is a strong interest in the use of aluminum alloy sheet for vehicle applications, particularly the body, where resistance spot welding is the principal joining method. It is important that the particular discontinuities that are often found in aluminum alloy spot welds do not adversely affect the weld properties. The objectives of this work were to provide information about the effect of excessive porosity and surface indentation and the effect of weld size on the fatigue performance of spot welds in aluminum alloy sheet. Trials were conducted on 1.2-mm-thick 5182-0 aluminum alloy in the mill-finished condition. Static shear and fatigue tests were conducted on welds over a range of welding conditions to simulate severe weld discontinuities. The work indicated that nugget porosity, up to about 40% of the weld diameter, deep surface indentation and variation in weld size had no major impact on the fatigue properties of the welds.

• OSTI ID: 334096
• Journal Information: Welding Journal, Journal Name: Welding Journal Journal Issue: 3 Vol. 78; ISSN 0043-2296; ISSN WEJUA3
• Country of Publication: United States
• Language: English

Related Subjects

33 ADVANCED PROPULSION SYSTEMS
36 MATERIALS SCIENCE
ALUMINIUM BASE ALLOYS
EXPERIMENTAL DATA
FATIGUE
RESISTANCE WELDING
SHEAR PROPERTIES
WELDED JOINTS