PSI - Issue 39

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Jesús Toribio et al. / Procedia Structural Integrity 39 (2022) 722–725 Author name / Procedia Structural Integrity 00 (2021) 000– 00

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Fig. 4. Evolution of the cleavage stress profile σ xx (x) at increasing loading levels σ c /100, σ c /10, σ c /2 and σ c .

4. Conclusions (i) Cold-drawn pearlitic steel wires exhibit strength anisotropy in the form of macro-crack path deflection. (ii) Such a macroscopic behaviour is a consequence of the microstructural anisotropy (orientation). (iii) In the deflected macro-crack, micro-cracking mode develops by oriented and enlarged cleavage. (iv) The cleavage stress is responsible for the macro-crack deflection (in addition to the microstructural anisotropy). References Alexander, D. J. and Bernstein, I. M., 1982. The cleavage plane of pearlite. Metallurgical Transactions 13A, 1865-1868. Park, Y.J. and Bernstein, I.M., 1979. The process of crack initiation and effective grain size for cleavage fracture in pearlitic eutectoid steel. Metallurgical Transactions 10A, 1653-1664. Toribio, J., Ayaso, F.J. 2020. On the necessity of triaxiality and microstructural orientation to produce anisotropic fracture in cold drawn pearlitic steel: Resembling John Ford’s Monument Valley . Procedia Structural Integrity 28, 2416-2423. Toribio, J. and Ovejero, E., 1997. Microstructure evolution in a pearlitic steel subjected to progressive plastic deformation. Materials Science and Engineering A234-236, 579-582. Toribio, J. and Ovejero, E., 1998a. Microstructure orientation in a pearlitic steel subjected to progressive plastic deformation. Journal of Materials Science Letters 17, 1037-1040. Toribio, J. and Ovejero, E., 1998b. Effect of cumulative cold drawing on the pearlite interlamellar spacing in eutectoid steel. Scripta Materialia 39, 323-328. Toribio, J. and Ovejero, E., 1998c. Effect of cold drawing on microstructure and corrosion performance of high-strength steel. Mechanics of Time Dependent Materials 1, 307-319.