Abstract
The high-temperature oxidation resistance of laser-surface-alloyed Incoloy 800H with Al has been investigated. Several samples have been exposed to 1000°C in air and subsequently analyzed by optical microscopy, SEM, and electron microprobe X-ray fluorescence spectroscopy in order to determine their microstructure and composition. The results show that the laser-treated materials have a considerably higher oxidation resistance than the nontreated materials due to the formation of an Al-rich layer close to the surface, which acts as a barrier against oxygen diffusion into the bulk.
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Gutiérrez, A., de Damborenea, J. High-temperature oxidation behavior of laser-surface-alloyed incoloy-800H with Al. Oxid Met 47, 259–275 (1997). https://doi.org/10.1007/BF01668514
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DOI: https://doi.org/10.1007/BF01668514