Graduate Thesis Or Dissertation
 

A study of laser processed intermetallics

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  • The effects of laser processing of Ni₃Al, TiAl, Fe₃Al, and Ni₃Si on microstructure and phase composition were characterized using optical and scanning electron microscopy and X-ray diffraction analysis. It was found that laser processing resulted in melt zones of ordered phases with fine grains and microstructures. The effects of heat treating for 1, 3, and 10 hours at 900C on both microstructure and phase composition were also analyzed. All non-equilibrium phases disappeared after one hour of heat treatment. After 10 hours of heat treatment order phases were retained in the laser processed regions but non-equilibrium microstructures remained.
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  • File scanned at 300 ppi (Monochrome, 8-bit Grayscale) using ScandAll PRO 1.8.1 on a Fi-6670 in PDF format. CVista PdfCompressor 4.0 was used for pdf compression and textual OCR.
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