'In-situ' weld-alloying/laser beam welding of SiCp/6061A1 MMC

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Abstract

In this paper, 'in-situ' weld-alloying/laser beam welding with titanium as alloying element is utlized to join SiCp/6061 Al MMC in order to prevent the formation of the needle-like harmful Al4C3 phases in the weld. Microstructure of the weld is characterized as functions of alloying content and processing parameters. Results show that the needle-like harmful aluminum carbides are completely eliminated. A central fusion weld joint reinforced by TiC, Ti5Si3 and Al3Ti is produced by 'in-situ' weld-alloying/laser beam welding of SiCp/6061 Al MMC, while some large pores are formed in the partly melted zone. (C) 2000 Elsevier Science S.A. All rights reserved.

Original languageEnglish
Pages (from-to)1-6
Number of pages6
JournalMaterials Science and Engineering: A
Volume293
Issue number1-2
DOIs
StatePublished - 2000
Externally publishedYes

Keywords

  • Aluminum carbide
  • In-situ weld-alloying
  • Laser beam welding
  • SiCp/Al MMCs
  • Titanium carbide
  • Titanium silicide

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