Influence of Manganese on the Properties of a Vanadium-bearing Ferritic Stainless Steel

概要

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For the purpose of further increasing toughness, the influence of manganese contents up to 4% was investigated in a 4% vanadium-bearing experimental ferritic stainless steel. The tensile and formability properties were also studied. The corrosion properties were measured using electrochemical techniques in 1 N H<SUB>2</SUB>SO<SUB>4</SUB> and 3.5% NaCl solutions. No marked effect was found on the tensile and formability properties. In contrast, mangenese has a strong detrimental effect on the general and localized corrosion properties of this 4% vanadium alloy. The passivation characteristics in normal sulphuric acid are much poorer. However, spontaneous passivation occurs in this environment where the manganese content is 0.1%. Similarly, the propensity to pitting corrosion is greatly improved at low manganese Ievels, with pitting potentials superior to both type 304 and 316L stainless steels.
社団法人日本鉄鋼協会の論文
1995-05-15