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Correlation between sheet formability and joint strength of A1050-O/SPCC butt laser welded tailored blanks
JIN Jianchen, SAKAMOTO Hiromu, IIZUKA Takashi
download PDFAbstract. Laser-welded tailored blanks are useful for lightweight automobiles. However, three major problems remain unresolved: low joint strength, low formability, and galvanic corrosion. Although considerable research has been conducted on the lap form, the studies on the use of lasers to weld dissimilar metals in the butt form are scarce. For practical applications of dissimilar metal tailored blanks, formability must also be investigated. In this study, Japan Industrial Standard A1050-O aluminum and SPCC steel were welded as dissimilar metal tailored blanks and used for Erichsen, flat punch stretch, and hole expansion tests. Welded materials with different joint strengths were produced to investigate the correlation between joint strength and formability. Two patterns of fracture owing to differences in joint strength were observed during the flat punch stretch test. The results of the formability test confirmed that the formability improved with an increase in the joint strength.
Keywords
Tailor Welded Blanks, Sheet Formability, Aluminum, Dissimilar Metals, Laser Welding
Published online 4/24/2024, 10 pages
Copyright © 2024 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: JIN Jianchen, SAKAMOTO Hiromu, IIZUKA Takashi, Correlation between sheet formability and joint strength of A1050-O/SPCC butt laser welded tailored blanks, Materials Research Proceedings, Vol. 41, pp 1343-1352, 2024
DOI: https://doi.org/10.21741/9781644903131-149
The article was published as article 149 of the book Material Forming
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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