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FACTORS DETERMINING RESISTANCE TO INTERGRANULAR CORROSION
INTERGRANULAR CORROSION AND EMBRITTLEMENT PROBLEMS
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active alloying elements alloys anodic austenitic steels base metal boiling 65 carbide precipitation carbon content chemical composition chromium carbides chromium content chromium steels cold deformation content of chromium cooling corrosion attack corrosion rate corrosion resistance critical temperature range current density depends effect electrode environments etching evaluation exposure ferrite ferritic steels grain boundaries granular corrosion heat treatment higher temperatures HNO3 increase intergranular attack intergranular corrosion intergranular stress corrosion knifeline attack knifeline corrosion lCrl8Ni9 level of stabilization low-carbon steels lower martensite material metallographic method molybdenum nickel niobium niobium carbides nitric acid nitrogen oxidizing passive phases pitting corrosion polarization curve potential reduced resistance to intergranular Sect sensitivity to intergranular shown in Fig sigma-phase solid solution solubility specimen stabilized steels stabilizing annealing stabilizing elements stainless steels standard solution steels and alloys steels containing steels to intergranular stress corrosion cracking surface susceptibility to intergranular thickness titanium carbides transpassive unstabilized weld metal zone