13th International Conference on Fracture June 16–21, 2013, Beijing, China -6- Fig. 6.a shows the pole figures from the (111), (110) and (100) centered plans in the delamination region. Fig. 6.b shows the orientation distribution function (ODF) obtained for the section φ2 = 45 °, which is the most important section on steels analysis, φ1 is Euler angle aligned with RD while Φ is aligned to TD. The main components were obtained from ODF's because pole figures provide incomplete information [21]. It can be seen in Figs. 6.a and 6.b the formation of fiber texture: α fiber or fiber DL, γ fiber or fiber DN and cube textures. The presence these components are common in low carbon steel from the controlled rolling process. It can suffer change in the intensity value according to different processing and composition chemical of the steel [3]. The α fiber components more intense were: {113} <110>, {112} <110> and {223} <110>, which it can cause anisotropy mechanical properties [3, 5, 6]. This manner, the {113} <110> fiber component is generated from the deformed austenite recrystallization {112} <111> component. While the {112} <110> and {223} <110> fiber components both are produced by deformation from the {113}<110> rotation component. The same components can be contributing to ductile crack propagation during the test. The cube fiber components were: {100} <120> and {100} <230>. These components usually are the lower intensity than γ and α fiber texture, this feature is attributed to recrystallization process [3]. The {100} <110> texture component was also found, the same is parallel to the rolling direction and contribute to both occurrence the cleavage plane and delamination phenomenon [3, 7, 8, 9, 10]. Taylor Factor Figure 5. Histogram the Taylor factor distribution from Fig. 4.c.
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