Difference between carbon and nitrogen in thermal stability of metastable 18%Cr-8%Ni austenite
| Autor: | Takuro Masumura, Kazuhiko Adachi, Tamotsu Koyano, Toshihiro Tsuchiyama, Setsuo Takaki |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
010302 applied physics
Austenite Materials science Mechanical Engineering Metals and Alloys Thermodynamics chemistry.chemical_element 02 engineering and technology 021001 nanoscience & nanotechnology Condensed Matter Physics 01 natural sciences Nitrogen chemistry Mechanics of Materials Stacking-fault energy Metastability 0103 physical sciences Thermal General Materials Science Thermal stability 0210 nano-technology Carbon |
| Zdroj: | Scripta Materialia. 154:8-11 |
| ISSN: | 1359-6462 |
| DOI: | 10.1016/j.scriptamat.2018.05.019 |
| Popis: | The effects of carbon and nitrogen addition on the athermal α′-martensitic transformation in metastable 18%Cr-8%Ni austenite are investigated. The thermal stability of austenite in nitrogen-added steel is higher than that in carbon-added steel, and the difference between the effects of carbon and nitrogen addition becomes remarkable as the amount of both elements increases. As the two-step transformation (γ → e → α′) always occurs in metastable 18%Cr-8%Ni austenite, the suppression of e-martensite results in the thermal stabilization of austenite. Nitrogen is more effective than carbon for increasing the stacking fault energy, leading to a higher thermal stability of the nitrogen-bearing 18%Cr-8%Ni steels. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full Text from ScienceDirect