Print Email Facebook Twitter Understanding ferrite deformation caused by austenite to martensite transformation in dual phase steels Title Understanding ferrite deformation caused by austenite to martensite transformation in dual phase steels Author Atreya, V. (TU Delft Team Maria Santofimia Navarro) Bos, C. (TU Delft Team Kevin Rossi; Tata Steel) Santofimia, Maria Jesus (TU Delft Team Maria Santofimia Navarro) Date 2021 Abstract During the production of DP steels, the volume expansion and shape change accompanying the austenite to martensite transformation is accommodated by the deformation of surrounding ferrite grains. The extent of the deformation in ferrite grains ultimately affects the mechanical properties of DP steels. Using electron backscatter diffraction measurements, this study identifies the characteristics of martensite which govern the extent of transformation induced deformation of ferrite grains. It was found that small austenite grains tend to transform into martensitic variants having a close-packed plane parallel relationship with adjacent ferrite grains, thus achieving relatively easy slip transmission and resulting in a long-range deformation of ferrite grains. Ferrite grains can also exhibit a short-range deformation limited to the vicinity of the ferrite/martensite interface, which is primarily governed by martensite carbon content. Subject Electron backscattering diffraction (EBSD)dual phases steelsmartensitic phase transformationplastic deformationslip transmission To reference this document use: http://resolver.tudelft.nl/uuid:a3e251ff-a8b9-4dcd-b2a8-3f43ed06d206 DOI https://doi.org/10.1016/j.scriptamat.2021.114032 ISSN 1359-6462 Source Scripta Materialia, 202 Part of collection Institutional Repository Document type journal article Rights © 2021 V. Atreya, C. Bos, Maria Jesus Santofimia Files PDF 1_s2.0_S1359646221003122_main.pdf 2.63 MB Close viewer /islandora/object/uuid:a3e251ff-a8b9-4dcd-b2a8-3f43ed06d206/datastream/OBJ/view