PSI - Issue 37

Jesús Toribio et al. / Procedia Structural Integrity 37 (2022) 1007–1012 Jesús Toribio / Procedia Structural Integrity 00 (2021) 000 – 000

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3. Results In the present investigation, the evolutions of the different micro-damages in the lamellae that make up the pearlite colonies have been analyzed. These micro damages have been called, given their location, as intracolonial. The evolutions of the micro-damages analyzed in the paper are described below. 3.1. Leopard skin This micro-defect, named for its appearance, consists of the breaking of cementite lamellae from the same colony, although the same defect could occur by continuity in neighbouring colonies. This micro-defect appears from the first drawing step, as shown in Fig. 3 (a).

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(d) Fig. 3. Evolution of leopard skin throughout the cold drawing process.