Selection and Weldability of Aluminum-Lithium Alloys

Cross, C. E.; Tack, W. T.

doi:10.31399/asm.hb.v06.a0001420

Cited by 3 publications

(1 citation statement)

References 7 publications

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“…Large cracks are observed along the outward direction from the nugget in AA5052 as well (Figure 4(e)). Previous studies on cracking in the non-heat-treatable aluminium alloys say that the cracking is assisted by a large Mg content in the alloy, while the exact amount for the most cracking susceptibility is debated [17, 18]. However, the Mg content of AA5052 is greater (up to 2.8 wt.…”

Section: Resultsmentioning

confidence: 99%

Resistance spot weldability of heat-treatable and non-heat-treatable dissimilar aluminium alloys

Lee

2020

Science and Technology of Welding and Joining

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This study addresses issues relevant to resistance spot welding of AA5xxx and AA6xxx dissimilar aluminium alloys. Welding parameters are optimised to provide the maximum lap-shear strength and the largest nugget size. As mechanical properties of the weld are affected by the characteristics of the heat-affected zone as well as the fusion zone, microscopic analysis was performed to address the weld microstructure and the mechanical performance. The asymmetrical nugget morphology and heterogeneous properties of the weld are due to the distinctive physical properties and strengthening mechanisms of the welded materials. The welding current range for the dissimilar pair falls between those for the similar combinations. A computational analysis using SORPAS is performed to address the resulted microstructure from welding.

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Section: Resultsmentioning

confidence: 99%

Resistance spot weldability of heat-treatable and non-heat-treatable dissimilar aluminium alloys

Lee

2020

Science and Technology of Welding and Joining

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Aluminum Welding

Cross¹,

Olson²,

Liu³

2003

Handbook of Aluminum

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Weldability of Aluminum Alloys

Berube¹

2018

Aluminum Science and Technology

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Weldability is a function of three major factors: base material quality, welding process, and design. This article focuses on base-metal weldability of aluminum alloys in terms of mechanical property degradation in both the weld region and heat-affected zone, weld porosity, and susceptibility to solidification cracking and liquation cracking. It provides an overview on welding processes, including gas metal arc welding, gas tungsten arc welding, resistance spot and seam welding, laser beam welding, and various solid-state welding processes. A review on joint design is also included, mainly in the general factors associated with service weldability (fitness). The article also provides a discussion on the selection and weldability of non-heat-treatable aluminum alloys, heat treatable aluminum alloys, aluminum-lithium alloys, and aluminum metal-matrix composites.

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Selection and Weldability of Aluminum-Lithium Alloys

Abstract: This article is a guide to the welding of commercially available aluminum-lithium alloys. It discusses the weldability issues created by weld porosity, hot cracking, and filler metal selection and presents the data revealed from weld characterization.

Cited by 3 publications

References 7 publications

Resistance spot weldability of heat-treatable and non-heat-treatable dissimilar aluminium alloys

Resistance spot weldability of heat-treatable and non-heat-treatable dissimilar aluminium alloys

Aluminum Welding

Weldability of Aluminum Alloys

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