Journal
MATERIALS SCIENCE AND TECHNOLOGY
Volume 20, Issue 3, Pages 319-322Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1179/026708304225011180
Keywords
TRIP steels; austenite; retained austenite; strain induced transformation; martensitic transformation; modelling
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A theory is developed for the quantitative representation of the strain induced transformation of retained austenite in low alloy, TRIP-assisted steels of the type developed for the automobile industry. It is possible, therefore, to calculate the fraction of austenite as a function of the plastic strain, chemical composition, deformation temperature and the starting amount of austenite. The effect of composition and temperature is expressed through the free energy available for transformation. Good agreement has been obtained with published experimental data. The model can be used to investigate the stability of the austenite during plastic deformation.
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