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Laser surface modification of titanium alloys

T.N. Baker,     University of Strathclyde, UK

Abstract:

The laser surface engineering of titanium alloys has been developed over the past thirty years to produce a modified layer up to 1 mm in depth, thicker than alternative techniques. Continuous wave CO2 lasers have been the main lasers used for both surface cladding and alloying. Much of the early work was based on laser nitriding forming titanium nitrides throughout the molten pool. Subsequent alloying developments have included the incorporation of carbides, nitrides, oxides and silicides; and also intermetallics and rare earths, added as powders. Laser processing can now tailor surfaces with superior tribological and erosion resistant ...

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