The Multi-Scale FEM Simulation of Wire Fracture during Drawing of Perlitic Steel

Abstract

The fracture development during wire drawing operation is an important phenomenon governing the productivity as well as the mechanical properties of the drawn wire. The wire drawing processes was investigated in present paper in two separate levels - using the 2-dimensional rigid-plastic finite element method (macro-level) and modelling the microstructure changes (micro-level) by the Representative Volume Elements (RVEs). To predict fracture initiation the phenomenological theory of fracture is used. The influence of initial cementite lamellas orientation on triaxity factor and localization of deformation in micro-level is investigated. Obtained results are helpful for a fundamental understanding of pearlitic deformation during development of high strength steel wires for tire cord applications.

Hybrid Fe/Xfe Finite Element Model for Simulation of Brittle-Ductile Fractures in Dual-Phase Steel Grades.

“…However, in this case only information regarding grain morphology is obtained see e.g. [9]. Details of such procedure applied to the DP steel can be found in [10].…”

The High Speed Wire Drawing Process of Steel Wires under Fluid Frictions Conditions

“…Theoretical analysis of the heating of the wire in the high speed multistage drawing process was carried out on software Drawing 2D [12], in which the temperature on the surface and average temperature, on the exit form sizing part of die, has been estimated.…”

“…It was assumed that the surface of the die and wire the conditions of friction Amont-Coulomb. Conditions of contact and friction between the material and the tool was modeled using the method of Kara function [12]. The coefficients of friction µ = 0.02 adopted on the basis of works [1,15].…”

Computer Simulation of Micro-Mechanic in Pearlitic Steel Wire Drawing

“…Due to the high responsibility of the end-use application of products made from pearlite wire, an urgent issue is the consideration of these microstructure evolution features in the design of processing technologies for such steels. Few papers devoted to multiscale computer simulation of pearlite steels drawing clearly demonstrate the expediency and relevance of studies of micro stresses and micro deformations at the level of pearlitic colonies [12][13][14]. It was observed that the stress-strain state, even at the scale level of individual perlite colonies, is characterized by a high degree of inhomogeneity.…”