Activation pH and susceptibility to hydrogen assisted stress corrosion cracking of martensitic stainless steels in sulphate solutions |
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Authors: | P. Süry |
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Affiliation: | Sulzer Brothers Ltd., Research and Development Department, CH-8401 Winterthur, Switzerland |
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Abstract: | The investigation of two different high strength stainless steels by the slow strain-rate technique has shown the existence of critical pH values (activation pH) for stress corrosion cracking in sulphate-containing media which depend on the steel composition. The slow strain-rate test indicates a sharp decrease of specimen ductility at the activation pH the value of which can also be determined by independent electrochemical methods. |
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