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Weld Failure in Formability Testing of Aluminum Tailor Welded Blanks
Technical Paper
2001-01-0090
ISSN: 0148-7191, e-ISSN: 2688-3627
Annotation ability available
Sector:
Event:
SAE 2001 World Congress
Language:
English
Abstract
The present work investigates weld failure modes during formability tests of multi-gauge aluminum Tailor Welded Blanks (TWBs). The limiting dome height test is used to evaluate formability of TWBs. Three gauge combinations utilizing aluminum alloy 5754 sheets are considered (2 to 1 mm, 1.6 to 1 mm and 2 to 1.6 mm). Three weld orientations have been considered: transverse, longitudinal and 45°. Interaction of several factors determines the type of failure that occurs in a TWB specimen. These factors are weld orientation, morphology and distribution of weld defects, and the magnitude of constraint imposed by the thicker sheet to the thin sheet. The last factor depends on the difference in thickness of the sheet pair and is usually expressed in terms of gauge ratio. In general TWBs show two different types of fracture: weld failure and failure of the thin aluminum sheet. Only the former will be discussed in this paper. Both optical and scanning electron microscopy techniques were used during the study of failure initiation and damage in the weld region of TWBs.
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Authors
Citation
Shakeri, H., Lee, Y., Worswick, M., Feng, F. et al., "Weld Failure in Formability Testing of Aluminum Tailor Welded Blanks," SAE Technical Paper 2001-01-0090, 2001, https://doi.org/10.4271/2001-01-0090.Also In
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