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A Ni-base superalloy, INCONEL 718, has a high sensitivity to hydrogen embrittlement. Hydrogen induced cracking tends to occur at the surface of the stress concentrated regions. Reducing the hardness of such surface regions locally is known to be effective in preventing such cracking. To this end, in the present work, a laser surface solutionizing has been applied to INCONEL 718 using a 2.5 kW CO ...
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