Effect of Intercritical Annealing Temperature on Martensite and Bainite Start Temperatures After Partial Austenitization
| Autor: | Ersoy Erişir, Oğuz Gürkan Bilir |
|---|---|
| Rok vydání: | 2015 |
| Předmět: |
010302 applied physics
Austenite Materials science Bainite Metallurgy General Engineering TRIP steel 02 engineering and technology 021001 nanoscience & nanotechnology Microstructure 01 natural sciences Grain size Ferrite (iron) Martensite 0103 physical sciences Volume fraction General Materials Science 0210 nano-technology |
| Zdroj: | JOM. 68:203-209 |
| ISSN: | 1543-1851 1047-4838 |
| Popis: | The microstructure evolution of dual-phase steel during partial austenitization was investigated for different intercritical annealing temperatures between Ac1 and Ac3 temperatures. Partial austenitization may result in different austenite volume fraction, chemical composition, and grain size of austenite depending on the intercritical annealing temperature. This study examines the effect of intercritical annealing temperature on M s and B s temperatures for dual-phase steels. M s and B s were measured experimentally for different intercritical annealing temperatures by using dilatometry and were compared with calculated values from empirical formulas. The grain sizes of the final microstructures were also quantitatively analyzed. It was shown that M s depends on the intercritical annealing temperature and austenite grain size. It was concluded that this double effect is attributed to the intercritical annealing temperature, which is responsible for both austenite chemical composition and grain size. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Full text from SpringerLink