|About this Abstract
||2021 TMS Annual Meeting & Exhibition
||Characterization of Minerals, Metals and Materials 2021
||Synergy between Cu and Cr on Localized Corrosion of the Low Alloy Steels
||Kewei Gao, Luchun Yan, Xiaolu Pang, Zhimeng Guo, Yanjing Su, Lijie Qiao
|On-Site Speaker (Planned)
In this paper, three kinds of low alloy steels containing Cu or/and Cr elements were used. The synergetic effect of Cu and Cr in steel was studied by the first principles calculation as well as TEM and SEM observations for understanding of localized corrosion mechanism,.
The types of inclusions in the three steels are basically the same, mainly composed of (Si, Al) oxide surrounded by (Mn, Cu, Cr) sulfides. There is no obviours difference in the number, size and distribution of inclusions in the three steels. The enrichment of Cu and Cr on MnS region of the complex inclusion was observed. Compared with steel containing only Cu or Cr, the enrichment degree of both elements increased when they coexisted, and the increase of enrichment degree of Cr element was higher than that of Cu element.