The Relation Between the Grain Size and the Tendency of Austenitic Corrosion Resistant Steels to Intercrystalline Corrosion (Vztahy Mezi Velikosti Zrna a Sklonem Austenitickych Korozivzdornych Oceli i Mezikrystalove Korozi)
FOREIGN TECHNOLOGY DIV WRIGHT-PATTERSON AFB OH
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On the basis of collected knowledge about intercrystalline corrosion of austenitic stainless steels a suggestion of evaluating the influence of grain size upon intercrystalline corrosion, both of unstabilized and stabilized steels, is discussed. According to well-known and adapted formulas which express the influence of nickel, chromium and molybdenum, niobium and - above all carbon, a relation was stated, which includes the influence of grain size and evaluates the resistance of steels, type Cr18Ni9, to intercrystalline corrosion. The relation is represented by a nomograph on logarithmic scale with the aim, to evaluate intercrystalline corrosion of stainless steels with different granularity and different composition, in a simple way. In the conclusion, practical applicability of the suggested method is demonstrated.
- Properties of Metals and Alloys