Abstract
A technique of injection with a powder feed of a mixture of metal + ceramic which combines the processes of laser alloying, cladding and injection, has been applied to study the feasibility of using a continuous wave CO2 laser to produce a functionally gradient material. A 2 kW CO2 laser has been used to produce, on a nickel alloy substrate, single alloy/clad tracks and three totally overlapping clad tracks using powder mixtures of Al-10 wt% SiC, Al-30 wt% SiC and Al-50 wt% SiC, respectively. The variation of composition and structure with position in the processed material has been investigated with reference to the effect of processing traverse speed and the powder feed rate.
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On leave from Scientific Research Council, Baghdad.
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Jasim, K.M., Rawlings, R.D. & West, D.R.F. Metal-ceramic functionally gradient material produced by laser processing. JOURNAL OF MATERIALS SCIENCE 28, 2820–2826 (1993). https://doi.org/10.1007/BF00356225
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DOI: https://doi.org/10.1007/BF00356225