Effect of Nb addition on Z-phase formation and creep strength in high-Cr martensitic heat-resistant steels
- Effect of Nb addition on Z-phase formation and creep strength in high-Cr martensitic heat-resistant steels
- 이규호; 홍성민; 심재혁; 서진유; 허주열; 정우상
- Heat-resistant steels; Creep strength; Precipitation; Z-phase; XRD
- Issue Date
- Materials characterization
- VOL 102, 79-84
- The effect of Nb addition on the creep strength of high-Cr martensitic heat-resistant steel was investigated at temperatures ranging from 839 to 894 K. The short-term creep properties were improved by Nb addition due to the enhanced MX precipitation. However, Nb addition deteriorated the steel's long-term stability resulting in an even shorter creep-rupture life than the original alloy. Onset of the accelerated degradation in Nbcontaining steel was attributed to the gradual formation of Z-phase at the expense of M2N precipitates during creep exposure.
- Appears in Collections:
- KIST Publication > Article
- Files in This Item:
There are no files associated with this item.
- RIS (EndNote)
- XLS (Excel)
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.