Effect of the Intercritical Annealing Temperature on the Mechanical Properties of 10 Pct Mn Multi-phase Steel
2014; Springer Science+Business Media; Volume: 45; Issue: 11 Linguagem: Inglês
10.1007/s11661-014-2449-0
ISSN1543-1940
AutoresSangwon Lee, Bruno C. De Cooman,
Tópico(s)High Temperature Alloys and Creep
ResumoIntercritically annealed 10 pct Mn steel has been shown to exhibit an excellent combination of strength and ductility due to the plasticity-enhancing mechanisms of mechanical twinning and strain-induced martensite transformation occurring in sequence. This mechanical behavior is only achieved for a multi-phase microstructure obtained after annealing within a specific intercritical temperature range. A model for the selection of the optimal intercritical annealing temperature was developed to achieve a high strength-ductility balance for 10 pct Mn multi-phase steel. The model considers the room temperature stacking fault energy and the thermodynamic stability of the retained austenite.
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