Relationship between the microstructure and local corrosion properties of weld metal in austenitic stainless steels

Shun Tokita, Kota Kadoi, So Aoki, Hiroshige Inoue

研究成果: Article査読

1 被引用数 (Scopus)

抄録

The purpose of this study is to evaluate the corrosion resistance of weld metal by electrochemical methods and discuss the relationship between microstructure and corrosion resistance. Intergranular and pitting corrosion resistances were measured using electrochemical potentiokinetic reactivation (EPR) test and pitting potential measurement respectively. The reactivation ratio and pitting potential corresponded to its chemical composition. The specimens containing more Cr and Mo showed higher resistance. In the EPR test, the dendrite core with a relatively low Cr content was corroded. In the pitting corrosion test, Nb carbide became the initiation site of pitting corrosion which propagated along the cell structure.

本文言語English
論文番号108867
ジャーナルCorrosion Science
175
DOI
出版ステータスPublished - 2020 10
外部発表はい

ASJC Scopus subject areas

  • Chemistry(all)
  • Chemical Engineering(all)
  • Materials Science(all)

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