Laser Cladding of Ni, Nb, and Mg Alloys for Improved Environmental Resistance at High Temperature
Final rept. Nov 1985-Oct 1988
ILLINOIS UNIV AT URBANA LASER AIDED MATERIALS PROCESSING LAB
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This report summarizes experimental and theoretical studies carried out during the period of November 1985 to October 1988 on laser surface modification of Nickel, Niobium, and Magnesium alloys for improved environmental resistance at high temperature. Major emphasis has been on Ni-Cr-Al-Hf system. Microstructural evolution and oxidation properties of Ni and Nb alloys were examined. For Mg alloys microstructural characterization and potentiodynamic corrosion testing were carried out. One-dimensional diffusion model for finite domain to examine the extended solid solubility in laser cladding was also developed.
- Metallurgy and Metallography