Abstract
Effects of chemical composition on grain boundary microchemistry and stress corrosion cracking (SCC) in two kinds of modified Alloy 182 with different hot-cracking resistance were investigated. The results showed that while decreasing concentrations of C, P and S but increasing the concentration ratio of (Nb. +. Ta)/Si can enhance hot-cracking resistance of the alloy, SCC susceptibility in primary water was promoted simultaneously, which is most likely due to the lowered creep resistance by a lower precipitate density and less P segregation at the grain boundary in the alloy.
| Original language | English |
|---|---|
| Pages (from-to) | 91-99 |
| Number of pages | 9 |
| Journal | Corrosion Science |
| Volume | 67 |
| DOIs | |
| Publication status | Published - 2013 Feb 1 |
Keywords
- A. Superalloys
- B. AES
- C. Stress corrosion
- C. Welding
ASJC Scopus subject areas
- Chemistry(all)
- Chemical Engineering(all)
- Materials Science(all)