Laser fabrication of Mo-TiC MMC on AA6061 aluminum alloy surface

P. H. Chong, Hau Chung Man, Tai Man Yue

Research output: Journal article publicationJournal articleAcademic researchpeer-review

39 Citations (Scopus)

Abstract

A Nd-YAG laser was used to clad Mo/TiC onto the surface of Aluminum Alloy AA6061. Experimental results indicated that the Mo/TiC clad layer has good metallurgical bonding with the substrate. TiC particulates are uniformly dispersed in the clad surface. The optimised clad layer with a pre-mixed paste composition of 30%Mo70%TiC exhibited the best wear resistance during a pin-on-disc abrasive wear test. The microhardness of the clad layer is 5-10 times higher than the as-received Al alloy. The microstructures, chemical compositions and the worn surface of the clad layers were analysed using scanning electron microscopy (SEM), energy dispersive X-ray spectroscopy (EDX) and X-ray diffractometry (XRD).
Original languageEnglish
Pages (from-to)268-275
Number of pages8
JournalSurface and Coatings Technology
Volume154
Issue number2-3
DOIs
Publication statusPublished - 15 May 2002

Keywords

  • Aluminum alloy
  • Laser surface cladding
  • Surface MMC
  • Titanium carbide
  • Wear resistance

ASJC Scopus subject areas

  • Surfaces, Coatings and Films
  • Condensed Matter Physics
  • Surfaces and Interfaces

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