Laser and resistance joining of aluminum-graphite composite

M. Velamati; E. Aguilar; M. A. Garza-Castañon; N. P. Hung; M. Powers

doi:10.1016/j.jmatprotec.2012.06.001

Laser and resistance joining of aluminum-graphite composite

M. Velamati, E. Aguilar, M. A. Garza-Castañon, N. P. Hung, M. Powers

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

9 Citations (Scopus)

Abstract

This research investigates welding and brazing of Al-Gr composite using different joining techniques. Limited success is obtained for laser welding since laser degrades the mechanical properties at the weld due to defects in the resolidified aluminum matrix, delamination of graphite fibers, and formation of brittle aluminum carbide Al ₄C ₃. Brazing is the preferred technique since the low brazing temperature of filler material suppresses the formation of Al ₄C ₃ while minimizing shrinkage cavities in the joint. Microstructural study and shear testing confirms the success of joining Al-Gr by laser brazing and resistance brazing with Zn-Al filler.

Original language	English
Pages (from-to)	2549-2557
Number of pages	9
Journal	Journal of Materials Processing Technology
Volume	212
Issue number	11
DOIs	https://doi.org/10.1016/j.jmatprotec.2012.06.001
Publication status	Published - 1 Nov 2012
Externally published	Yes

Bibliographical note

Funding Information:
This material is based upon work supported by the National Science Foundation under grant #0552885 and TAMU-CONACyT grant #246734. Contribution from Metal Matrix Cast Composites is much appreciated.

Copyright:
Copyright 2012 Elsevier B.V., All rights reserved.

All Science Journal Classification (ASJC) codes

Ceramics and Composites
Computer Science Applications
Metals and Alloys
Industrial and Manufacturing Engineering

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https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=84865856757&origin=inward

Cite this

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abstract = "This research investigates welding and brazing of Al-Gr composite using different joining techniques. Limited success is obtained for laser welding since laser degrades the mechanical properties at the weld due to defects in the resolidified aluminum matrix, delamination of graphite fibers, and formation of brittle aluminum carbide Al 4C 3. Brazing is the preferred technique since the low brazing temperature of filler material suppresses the formation of Al 4C 3 while minimizing shrinkage cavities in the joint. Microstructural study and shear testing confirms the success of joining Al-Gr by laser brazing and resistance brazing with Zn-Al filler.",

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AU - Aguilar, E.

AU - Garza-Castañon, M. A.

AU - Hung, N. P.

AU - Powers, M.

N1 - Funding Information: This material is based upon work supported by the National Science Foundation under grant #0552885 and TAMU-CONACyT grant #246734. Contribution from Metal Matrix Cast Composites is much appreciated. Copyright: Copyright 2012 Elsevier B.V., All rights reserved.

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Laser and resistance joining of aluminum-graphite composite

Abstract

Bibliographical note

All Science Journal Classification (ASJC) codes

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