Dealloying of a binary noble alloy produces a porous layer rich in the more noble element. Application of a tensile load may initiate a brittle intergranular crack in the dealloyed layer that advances into the unattacked material. The relationships between the dealloying potential, dealloyed layer thickness and alloy susceptibility to film induced intergranular cracking have been studied.

Subject
Films, Materials, Cleavage, Intergranular cracking, Crack depth, Crack velocity, Film thickness, Layer thickness, Fracture, Alloys, Dealloying, Stress corrosion cracking, Electrode potential
Keywords:
film induced cleavage, stress corrosion cracking, selective dissolution, dealloying, intergranular cracking
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1995
Association for Materials Protection and Performance (AMPP)
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