Reduction of Residual Stresses in Cold Drawn Pearlitic Steel by a Soft Secondary Wire Diameter Reduction

In this paper, the effects of the skin pass technique on the residual stress and plastic strain fields generated in cold drawn pearlitic steel wires are analyzed. The aim is to find out the optimal conditions to be used in the design of a manufacturing process for obtaining more reliable structural...

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Main Authors: Jesús Toribio, Miguel Lorenzo
Format: Article
Language:English
Published: MDPI AG 2023-02-01
Series:Metals
Subjects:
Online Access:https://www.mdpi.com/2075-4701/13/2/433
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author Jesús Toribio
Miguel Lorenzo
author_facet Jesús Toribio
Miguel Lorenzo
author_sort Jesús Toribio
collection DOAJ
description In this paper, the effects of the skin pass technique on the residual stress and plastic strain fields generated in cold drawn pearlitic steel wires are analyzed. The aim is to find out the optimal conditions to be used in the design of a manufacturing process for obtaining more reliable structural components in terms of the main cause of failure: the hydrogen embrittlement (HE). To achieve this goal, diverse numerical simulations were performed by using finite elements (FE) and considering, on one hand, the first step of a real cold drawing chain, using (i) a conventional drawing die and (ii) modified drawing dies with different soft diameter reductions, and, on the other hand, numerical simulations by FE of the hydrogen diffusion assisted by stress and strain states to estimate the hydrogen distributions. Obtained results revealed the secondary reduction degree as a key parameter in the die design for reducing the drawing-induced residual stress. According to the results, low values of the reduction ratio cause radial distributions of residual stress with significant reductions at both the wire core and at the wire surface. In addition, the hydrogen accumulation at the prospective damage zone (near the wire surface) given by FE simulations is lower in the wires drawn with modified drawing dies including a skin pass zone.
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spelling doaj.art-fca2b98289c5485c9a972c90012b04982023-11-16T22:09:14ZengMDPI AGMetals2075-47012023-02-0113243310.3390/met13020433Reduction of Residual Stresses in Cold Drawn Pearlitic Steel by a Soft Secondary Wire Diameter ReductionJesús Toribio0Miguel Lorenzo1Fracture & Structural Integrity Research Group, University of Salamanca, E.P.S., Campus Viriato, Avda. Requejo 33, 49002 Zamora, SpainFracture & Structural Integrity Research Group, University of Salamanca, E.P.S., Campus Viriato, Avda. Requejo 33, 49002 Zamora, SpainIn this paper, the effects of the skin pass technique on the residual stress and plastic strain fields generated in cold drawn pearlitic steel wires are analyzed. The aim is to find out the optimal conditions to be used in the design of a manufacturing process for obtaining more reliable structural components in terms of the main cause of failure: the hydrogen embrittlement (HE). To achieve this goal, diverse numerical simulations were performed by using finite elements (FE) and considering, on one hand, the first step of a real cold drawing chain, using (i) a conventional drawing die and (ii) modified drawing dies with different soft diameter reductions, and, on the other hand, numerical simulations by FE of the hydrogen diffusion assisted by stress and strain states to estimate the hydrogen distributions. Obtained results revealed the secondary reduction degree as a key parameter in the die design for reducing the drawing-induced residual stress. According to the results, low values of the reduction ratio cause radial distributions of residual stress with significant reductions at both the wire core and at the wire surface. In addition, the hydrogen accumulation at the prospective damage zone (near the wire surface) given by FE simulations is lower in the wires drawn with modified drawing dies including a skin pass zone.https://www.mdpi.com/2075-4701/13/2/433prestressing steelcold drawn pearlitic steelwire drawingdie designresidual stress and strainhydrogen embrittlement
spellingShingle Jesús Toribio
Miguel Lorenzo
Reduction of Residual Stresses in Cold Drawn Pearlitic Steel by a Soft Secondary Wire Diameter Reduction
Metals
prestressing steel
cold drawn pearlitic steel
wire drawing
die design
residual stress and strain
hydrogen embrittlement
title Reduction of Residual Stresses in Cold Drawn Pearlitic Steel by a Soft Secondary Wire Diameter Reduction
title_full Reduction of Residual Stresses in Cold Drawn Pearlitic Steel by a Soft Secondary Wire Diameter Reduction
title_fullStr Reduction of Residual Stresses in Cold Drawn Pearlitic Steel by a Soft Secondary Wire Diameter Reduction
title_full_unstemmed Reduction of Residual Stresses in Cold Drawn Pearlitic Steel by a Soft Secondary Wire Diameter Reduction
title_short Reduction of Residual Stresses in Cold Drawn Pearlitic Steel by a Soft Secondary Wire Diameter Reduction
title_sort reduction of residual stresses in cold drawn pearlitic steel by a soft secondary wire diameter reduction
topic prestressing steel
cold drawn pearlitic steel
wire drawing
die design
residual stress and strain
hydrogen embrittlement
url https://www.mdpi.com/2075-4701/13/2/433
work_keys_str_mv AT jesustoribio reductionofresidualstressesincolddrawnpearliticsteelbyasoftsecondarywirediameterreduction
AT miguellorenzo reductionofresidualstressesincolddrawnpearliticsteelbyasoftsecondarywirediameterreduction