Effect of interlamellar spacing on the elastoplastic behavior of C70 pearlitic steel: Experimental results and self-consistent modelingReportar como inadecuado




Effect of interlamellar spacing on the elastoplastic behavior of C70 pearlitic steel: Experimental results and self-consistent modeling - Descarga este documento en PDF. Documentación en PDF para descargar gratis. Disponible también para leer online.

1 Laboratoire de Mécanique, Matériaux et Procédés - ESSTT, Université de Tunis 2 PIMM - Procédés et Ingénierie en Mécanique et Matériaux Paris 3 AGH University of Science and Technology Pologne

Abstract : The effect of pearlite microstructure characteristics on strength and deformation 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 stress induced by plasticity. Tests have been carried out on two pearlitic microstructures with interlamellar spacing Sp = 170 and 230 nm respectively. Ferrite critical shear stresses ðs0c ðaÞÞ are equal to 75-86 MPa for interlamellar spacing Sp = 230 nm and 105-120 MPa for interlamellar spacing Sp = 170 nm. Moreover, the compressive residual stress measured in ferrite phase is higher in elasto-plastically deformed sample total strain of E11 = 1.2% having larger interlamellar spacing rR Fea ¼ 161 MPa for Sp = 230 nm and rR Fea ¼ 77 MPa for Sp = 170 nm.

Keywords : Pearlitic steel X-ray diffraction Self-consistent model Critical shear stress Residual stress





Autor: Houda Yahyaoui - H Sidhom - Chedly Braham - A. Baczmanski -

Fuente: https://hal.archives-ouvertes.fr/



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