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Effect of Interlamellar Spacing on the Monotonic Behavior of C70 Pearlitic Steel

Abstract : The effect of interlamellar spacing on monotonic behavior of C70 pearlitic steel was investigated. Tensile tests under X-ray diffraction coupled with self-consistent model have been used to identify the role of interlamellar spacing on the ferrite plasticity parameters and residual stresses. It has been established that yielding of pearlite is controlled by ferrite critical shear stresses ( τc 0α) which is higher for the smaller interlamellar spacing. Moreover, the residual stress level in ferrite is higher for the largest interlamellar spacing under the same imposed total strain. Lattice strains, measured by synchrotron X-ray diffraction, show an elastic and plastic anisotropy of ferrite crystallites and high stresses in cementite which confirm the self-consistent model calculation.
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Submitted on : Wednesday, September 11, 2019 - 7:59:04 PM
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Houda Yahyaoui, Habib Sidhom, Chedly Braham, Andrzej Baczmański, Manuel François, et al.. Effect of Interlamellar Spacing on the Monotonic Behavior of C70 Pearlitic Steel. Advanced Materials Research, Trans Tech Publications, 2014, 996, pp.88-93. ⟨10.4028/⟩. ⟨hal-02276900⟩



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