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- Title
Martensitic Phase Transformation from Non-isothermally Deformed Austenite in High Strength Steel 22SiMn2TiB.
- Authors
Shi, Z.; Li, Jian; Chi, B.; Pu, J.; Zhang, Y.; Wang, M.; Shi, J.; Dong, H.
- Abstract
Non-isothermal compressive deformation was performed on high strength steel 22SiMn2TiB for the study of martensitic phase transformation from deformed austenite. The transformation start temperature M decreased with the increase of deformation from 0 to 50 pct, and the variation of deformation rate (0.1 and 10 s) and the appearance of deformation-induced ferrite and bainite showed no influence on the change of M temperature. The deformation at both the rates increased the volume fraction of retained austenite; however, the carbon content of retained austenite decreased at 10 s and remained basically unchanged at 0.1 s. The yield strength of austenite at M temperature and the stored energy in deformed austenite were experimentally obtained, with which the relationships between the change of M temperature and the thermodynamic driving force for martensitic phase transformation from deformed austenite were established by the use of the Fisher-ADP-Hsu model. And finally, the transformation kinetics was analyzed by the Magee-Koistinen-Marhurger equation.
- Subjects
MARTENSITIC transformations; PHASE transitions; AUSTENITE; HIGH strength steel; DEFORMATIONS (Mechanics); FERRITES; BAINITE
- Publication
Metallurgical & Materials Transactions. Part A, 2013, Vol 44, Issue 9, p4136
- ISSN
1073-5623
- Publication type
Article
- DOI
10.1007/s11661-013-1772-1