PSI - Issue 3

M.A. Beltrán et al. / Procedia Structural Integrity 3 (2017) 57–67 Author name / Structural Integrity Procedia 00 (2017) 000–000

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3.2 Texture analysis For references aims, Fig. 3 a) presents the position of some α (<0 1 1> RD) and ϒ ({111} ND) texture fibers in the φ2= 45° section of the orientation distribution function (ODF) in the Euler space. Such section is widely used in steel literature to represent textures because of the main bcc texture components due to rolling and annealing have the convenient property that they can all be represented in that section. The texture analysis was realized by the CHANNEL5 software. Fig. 4 shows the obtained results for the measurements of pole figures for the API-5L X46 steel. According to results, it is observed an almost isotropic random texture typical of a hot rolled low carbon steel.

Fig. 3. a) Position of α (<0 1 1> RD) and ϒ ({111} ND) texture fibers in the φ2= 45° section of the ODF in the Euler space. b) Pole figures of {200}, {110} and {211} planes in the API-5L X46 steel. The results are presented relative to the circumferential direction (TD) and rolling direction (RD). 3.3 EBSD analysis The results of the EBSD analysis of the API-5L X46 steel, in the longitudinal and circumferential section are provided in the Fig. 4. The color coded orientation map along with the inverse pole figure can be seen from which a qualitative view of texture can be made.

Fig. 4. Color coded map, longitudinal and circumferential sections of API-5L X46 steel. The results are presented relative to the normal direction (ND), transversal direction (TD) and rolling direction (RD).

From the inverse pole figures it could be seen that, in both sections, the sample´s orientation distribution doesn’t favor the formation of preferential orientations of notable manner and there is not an orientation clustering. Therefore,