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Role of Nb in 13Cr super-martensitic stainless steel
| Content Provider | Scilit |
|---|---|
| Author | Ma, Xiaoping Zhou, Cheng Wang, Lijun Liu, Chunming Subramanian, Sundaresa Oliveira, Mariana Perez De |
| Copyright Year | 2013 |
| Description | The effect of Nb microalloying on structure and physical properties of quenched and tempered 13%Cr martensitic stainless steel was investigated. Excellent strength and adequate toughness properties were obtained by 0.10 wt% Nb addition to low interstitial (N 0.01wt%, C < 0.02wt%) steel. The effect of Nb in 13%Cr steels with high N content was also studied in a commercial martensitic stainless steel sample containing higher levels of N and also alloyed with V. The microstructure, precipitate morphology and dispersion and volume fraction of reverse austenite were characterized. The strength properties obtained in the steel with 0.10%Nb are significantly higher than those of the V-containing steel. The study shows that whereas amount, size and dispersion of precipitates of microalloying elements contribute to enhanced strength, the optimum volume fraction of reverse austenite formed contributes to enhanced ductility and toughness properties. More importantly, high Nb additions to low N -13%Cr-1%Mo steel are found to improve significantly resistance against pitting corrosion significantly. |
| Related Links | http://www.scielo.br/pdf/rem/v66n2/v66n2a07.pdf http://www.scielo.br/scielo.php?script=sci_pdf&pid=S0370-44672013000200007&lng=en&nrm=iso&tlng=en |
| Ending Page | 185 |
| Page Count | 7 |
| Starting Page | 179 |
| ISSN | 03704467 |
| e-ISSN | 18070353 |
| DOI | 10.1590/s0370-44672013000200007 |
| Journal | Rem: Revista Escola de Minas |
| Issue Number | 2 |
| Volume Number | 66 |
| Language | English |
| Publisher | FapUNIFESP (SciELO) |
| Publisher Date | 2013-06-01 |
| Access Restriction | Open |
| Subject Keyword | Revista Escola de Minas Metallurgy and Metallurgical Engineering Stainless Steel Martensitic Stainless Super Martensitic 13cr Super Role of Nb |
| Content Type | Text |
| Resource Type | Article |
| Subject | Waste Management and Disposal Geology Geochemistry and Petrology Economic Geology Materials Science |
