Modelling Mechanical Properties of AISI 439-430Ti Ferritic Stainless Steel Sheet

Subject Areas : Mechanical Engineering

N Brinis ¹ , B Regaiguia ² , O Chahaoui ³ , N Maatougui ⁴ , M.L Fares ⁵

1 - Engineering Sciences and Advanced Materials Laboratory (ISMA), Laghrour-Abbes University of Khenchela, Algeria
2 - Engineering Sciences and Advanced Materials Laboratory (ISMA), Laghrour-Abbes University of Khenchela, Algeria ---Metallurgy and Engineering Materials, Badji-Mokhtar University of Annaba, Algeria
3 - Engineering Sciences and Advanced Materials Laboratory (ISMA), Laghrour-Abbes University of Khenchela, Algeria
4 - National School of Mines and Metallurgy-Annaba, Algeria
5 - Metallurgy and Engineering Materials, Badji-Mokhtar University of Annaba, Algeria

Received: 2019-03-18 Accepted : 2019-05-14 Published : 2019-06-30

Keywords: Sheet Metal Forming, Constitutive model, Isotropic hardening function, Orthotropic yield criterion, Anisotropy evolution,

Abstract :

The comprehension of the anisotropy impactson mechanical properties of the rolled steel sheets was investigated using a non-quadratic anisotropic yield function. In this study, experimental and modelling determination regardingthe behaviourof an industrial rolledsheet for a ferritic stainless low-carbon steel were carried out. The parameters of the associated yield equation, derived from the three orthotropic yield functions proposed by Hill48, Yld96 and Yld2000-2d, were determined. Predictions and the evolution of normalized yield stress and normalized Lankford parameters (plastic strain ratio) obtained by the presented investigative are considered. The forecasts given by the YLD2000-2d criterion are consistent with that of the experience. In order to describe the path of strain behavior, the isotropic hardening function is described using the following four empirical standard formulae based on: Hollomon, Ludwick, Swift and Voce law.More accurately,the anisotropy coefficients of three yield functions are represented as a function of the longitudinal equivalent plastic strain.

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