The aqueous environment assisted cracking (EAC) resistance of a superalloy, Alloy 718 (Ni-19Fe-18Cr-5Nb-1 Ti-0.6Al), was characterized by a rising displacement fracture mechanics method. This precipitation-strengthened alloy was susceptible to room-temperature EAC in acidified sodium chloride at cathodic and anodic potentials. The threshold for stable crack growth in chloride...
Keywords: crack chemistry, crack growth rate, electrode potential, fracture mechanics, hydrogen embrittlement, ion analysis, intergranular cracking, stress corrosion cracking, superalloys, transgranular cracking