Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7983224 | Materials Science and Engineering: A | 2013 | 7 Pages |
Abstract
After long-term thermal aging, duplex stainless steel (DSS) components suffer performance degradation and their service life is shortened. Microstructural evolution and mechanical property characterization of the Z3CN20-09M steel, thermally aged at 400 °C for up to 20,000 h and further annealed at 550 °C for 1 h were investigated. Hardening in ferrite is demonstrated to be mostly related to spinodal decomposition, and slightly related to G-phases produced. The spinodal decomposition precipitates dissolved during annealing, leading to the recovery of mechanical property of ferrite. Proper annealing is shown to be a prospective and economic approach to extending the service life of long-term working DSS components.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
S.L. Li, H.L. Zhang, Y.L. Wang, S.X. Li, K. Zheng, F. Xue, X.T. Wang,