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Article Dans Une Revue Materials Letters Année : 2020

Fatigue intrusion-extrusion in a fully pearlitic steel


The aim of this paper is to identify the location of fatigue extrusions and intrusions, the latter being the precursor of short microcracks in a fully pearlitic steel. The material contains a huge amount of interfaces, as it consists of α -ferrite bands separated by Fe3C cementite lamellae. Fe3C cementite remained inactive while cyclic plasticity occurred in α -ferrite bands. Both intrusions and extrusions formed in the interior of the α -ferrite bands. Unlike other materials, intrusion did not nucleate at the interface between α -ferrite and Fe3C cementite. The coherency of the interface is suspected to be responsible for this shift.
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hal-02491793 , version 1 (07-03-2022)


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Jean-Bernard Vogt, Isadora Costa, Ahmed Addad, Jeremie Bouquerel. Fatigue intrusion-extrusion in a fully pearlitic steel. Materials Letters, 2020, Materials Letters, pp.127539. ⟨10.1016/j.matlet.2020.127539⟩. ⟨hal-02491793⟩
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