| TRIP is the transformation of the retained austenite into martensite during the deformation. Therefore, it is very important to measure the initial volume fraction of the retained austenite in TRIP steels. The conventional XRD single peak comparison lacked in the reliability and accuracy in quantitative analysis of retained austenite due to carbide, absorption and especially texture. In the present study, the initial volume fraction of the retained austenite has been measured in the C-Si-Mn TRIP steels after various heat treatments. Among various techniques, Mossbouer spectroscopy, neutron diffraction (Rietveld refinement), and image analysis could measure quantitatively the volume fraction of retained austenite. |
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