Twinned substructure in lath martensite of water quenched Fe-0.2 %C and Fe-0.8 %C steels
Haidong Suna, Yuhui Wanga, Zuohua Wanga, Ning Liub, Yan Penga, Xiujuan Zhaoc, Ruiming Renc, Hongwang Zhanga,*()

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Fig. 3.. EBSD characterizations of the lath martensite in Fe-0.2C (a, b) and Fe-0.8C (c, d, e) steel samples. In the inverse pole figure (IPF) images (a, c), twin-related variant groups like V1-V2, V3-V4, V5-V6 were marked by red rectangle and arrows, while Bain groups, i.e. V1-V4, V2-V5, V3-V6 were marked by black rectangle and arrows. {001} pole figures in b and d show the experimental (black dots) and calculated (red triangles) orientation distribution according to K-S relationship. Histograms (e) show the experimental and theoretical misorientation distribution between 24 variants following K—S relationship. See text for detailed information.