Intergranular corrosion behavior of low-chromium ferritic stainless steel without Cr-carbide precipitation after aging

Research output: Contribution to journalArticle

Researchers

Research units

  • Chinese Academy of Sciences
  • University of Science and Technology of China
  • Tsinghua University

Abstract

The intergranular corrosion behavior of the low-chromium ferritic stainless steel without Cr-carbide precipitation was investigated by the methods of qualitative and quantitative corrosion testing and microstructural analysis. The intergranular corrosion susceptibility of the aged stainless steels can be attributed to the Cr-depleted zone formation induced by Cr-C co-segregation to grain boundaries before Cr-carbide nucleation. The change of intergranular corrosion morphology after aging at 450 °C from discontinuous (aged for 2 h) to semi-continuous (aged for 20 h) and to continuous (aged for 200 h) is discussed in detail.

Details

Original languageEnglish
Article number108420
JournalCorrosion Science
Early online date30 Dec 2019
Publication statusE-pub ahead of print - 30 Dec 2019
MoE publication typeA1 Journal article-refereed

    Research areas

  • Ferritic stainless steel, Intergranular corrosion, Segregation, Cr-Carbide, Aging

ID: 40180191