Paper Title:
Yield Surface and Complex Loading Path Simulation of a Duplex Stainless Steel Using a Bi-Phase Polycrystalline Model
  Abstract

In order to model the elasto-viscoplastic behaviour of an austenitic-ferritic stainless steel, the model initially developed by Cailletaud-Pilvin [1] [2] and used for modeling single-phase polycrystalline steel is extended in order to take into account the bi-phased character of a duplex steel. Two concentration laws and two local constitutive laws, based on the crystallographic slips and the dislocation densities, are thus simultaneously considered. The model parameters are identified by an inverse method. Simple tests among which tension test at constant strain rate and at different strain rates and uniaxial tension-compression test are used during the identification step. The predictive capabilities of the polycrystalline model are tested for non-proportional loading paths. It is shown that the model reproduces the over-hardening experimentally observed for this kind of loading paths. Then, yield surfaces are simulated during a uniaxial tension-compression test: it is shown that the distortion (i.e. plastic anisotropy induced by loading path) is correctly described.

  Info
Periodical
Materials Science Forum (Volumes 567-568)
Edited by
Pavel Šandera
Pages
141-144
DOI
10.4028/www.scientific.net/MSF.567-568.141
Citation
P. Evrard, V. Aubin, S. Degallaix, D. Kondo, "Yield Surface and Complex Loading Path Simulation of a Duplex Stainless Steel Using a Bi-Phase Polycrystalline Model", Materials Science Forum, Vols. 567-568, pp. 141-144, 2008
Online since
December 2007
Export
Price
$32.00
Share

In order to see related information, you need to Login.

In order to see related information, you need to Login.

Authors: Jens Gibmeier, Martin Götting, Wolfgang Zinn, Berthold Scholtes
Abstract:The deformation behaviour of the highly textured Mg-base wrought alloy AZ31 subjected to tensile and compressive elasto-plastic loading was...
931
Authors: Sheng Lu, Jing Chen, Liu Qiao Chen
Abstract:Cyclic loading and unloading tensile tests were carried out for Cu-11.30wt. %Al-0.32wt. % Be Shape Memory Alloys (SMA) wires to investigate...
886
Authors: Y. Sha, Hui Tang, Jia Zhen Zhang
Abstract:In this paper, a detailed elastic-plastic finite element analysis of the effect of the compressive loading on crack tip plasticity is...
980
Authors: Xin Hong Shi, Jian Yu Zhang, Rui Bao, Bin Jun Fei
Abstract:Studies about the effect of stress characteristics on multi-axial high-cycle fatigue of metals are still insufficient. Up to now, little work...
877
Authors: Xiao Jiu Feng, Li Fu Liang, Si Yuan Wang
Chapter 13: Materials and Design
Abstract:This paper adopts Macroscopic Phenomenological Method to establish constitutive relation. In order to maintain better approximation, it...
2130