Abstract
Abstract The stress corrosion behavior of commercially available glassy Fe-40 At% Ni-20 At% B alloy was investigated. Constant strain testing was carried out in aqueous solutions of ferric chloride, polythionic acid, and hydrochloric acid. Weight loss and selective dissolution experiments at the free corrosion potential and linear polarization studies were also performed in these media. The potential dependence of crack morphology showed a progression from hydrogen embrittlement at cathodic potentials through general dissolution to stress corrosion cracking and crevice corrosion at anodic potentials. Selective leaching of nickel from pits and cracks was observed in chloride media. Crack morphology depended somewhat on surface topography.
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