Modelling Mechanical Properties of AISI 439-430Ti Ferritic Stainless Steel Sheet
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Date
2019-05-14
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Abstract
The comprehension of the anisotropy impacts on mechanical
properties of the rolled steel sheets was investigated using a nonquadratic
anisotropic yield function. In this study, experimental and
modelling determination regarding the behaviour of an industrial
rolled sheet 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.