Journal of Materials Science

, Volume 29, Issue 13, pp 3393–3398 | Cite as

Functionally gradient titanium-aluminide composites produced by laser cladding

  • J. H. Abboud
  • D. R. F. West
  • R. D. Rawlings


The laser surface cladding of Ti-Al/TiB2 composites was investigated as a means of producing a functionally gradient material on a commercially pure Ti substrate. Single and double layers were produced. The processing parameters were: 1.7 kW laser power, 3 mm beam diameter, 3–22 mms−1 traverse speeds, 2.2–6.2 g min−1 powder flow rates. The results showed that functionally gradient Ti-Al/TiB2 systems ∼ 2 mm thick, with a progressive increase in the Al content from 0 to 35 wt% Al (50 at % Al) could be produced by vertically overlapping two clad layers using powder mixtures of selected compositions. Microstructural and compositional characterization were performed on single-layer and two-layer clads. Preliminary wear testing carried out on a laser surface Ti-Al/TiB2 single-clad layer and on commercial-purity titanium demonstrated the beneficial effect of laser cladding on the wear resistance.


Wear Resistance Powder Mixture Wear Testing Beam Diameter Laser Surface 
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Copyright information

© Chapman & Hall 1994

Authors and Affiliations

  • J. H. Abboud
    • 1
  • D. R. F. West
    • 1
  • R. D. Rawlings
    • 1
  1. 1.Department of materialsImperial College of Science, Technology and MedicineLondonUK

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