| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7970381 | Materials Characterization | 2015 | 6 Pages |
Abstract
The effect of Nb addition on the creep strength of high-Cr martensitic heat-resistant steel was investigated at temperatures ranging from 839 to 894Â 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 Nb-containing steel was attributed to the gradual formation of Z-phase at the expense of M2N precipitates during creep exposure.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Kyu-Ho Lee, Sung-Min Hong, Jae-Hyeok Shim, Jin-Yoo Suh, Joo-Youl Huh, Woo-Sang Jung,