Environment sensitive cracking of pre-stressing steels

Slow strain rate stress corrosion tests on notched or pre-cracked specimens of pre-stressing steel immersed in Ca(OH) 2 solutions, to which HCl was added where the pH needed to be reduced, have shown that enhanced cracking results at potentials below about − 900 mV, irrespective of pH, and that ther...

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Published in:Corrosion science 1982, Vol.22 (5), p.379-405
Main Authors: Parkins, R.N., Elices, M., Sanchez-Galvez, V., Caballero, L.
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Language:English
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container_issue 5
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container_title Corrosion science
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creator Parkins, R.N.
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description Slow strain rate stress corrosion tests on notched or pre-cracked specimens of pre-stressing steel immersed in Ca(OH) 2 solutions, to which HCl was added where the pH needed to be reduced, have shown that enhanced cracking results at potentials below about − 900 mV, irrespective of pH, and that there is a further regime of environment sensitive fracture at higher potentials, with an intermediate region in which cracking is absent or less severe than at other potentials. The lower potential regime of cracking appears to be related to the ingress of hydrogen into the steel, whereas that at higher potentials occurs when the pitting potential is exceeded and appears to be dissolution-related.
doi_str_mv 10.1016/0010-938X(82)90017-8
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title Environment sensitive cracking of pre-stressing steels
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