首页|Incorporating precipitation-related effects on plastic anisotropy of age-hardenable aluminium alloys into crystal plasticity constitutive models

Incorporating precipitation-related effects on plastic anisotropy of age-hardenable aluminium alloys into crystal plasticity constitutive models

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  • NETL
  • NSTL
  • Elsevier
Crystal plasticity finite element simulations are frequently employed to predict the plastic anisotropy of poly-crystalline metals based on their crystallographic texture. In age-hardenable aluminium alloys, however, the texture-induced plastic anisotropy is known to affect by precipitation. This paper presents a new modelling approach to incorporate this effect into crystal plasticity constitutive models. The approach focuses on the overall effect of precipitation, which is assumed to result in an additional directional dependency with respect to a global material orientation, superimposed with the texture-induced plastic anisotropy. This additional directional dependency is implemented into a conventional crystal plasticity constitutive model via a modified hardening law that introduces two new parameters, of which only one is treated as a free parameter. To demonstrate the applicability of the new modelling approach, it is applied to an age-hardenable AA6014-T4 aluminium alloy and compared against a state-of-the-art crystal plasticity constitutive model that considers only crystallographic texture. The results demonstrate that the new modelling approach significantly improves the prediction accuracy of the plastic anisotropy for the AA6014-T4 aluminium alloy studied.

Crystal plasticity finite element methodSheet metalAge-hardenable aluminium alloyPlastic anisotropyCrystallographic texturePrecipitation

Alexander Wessel、Emin Semih Perdahcioglu、Ton van den Boogaard、Alexander Butz、Wolfram Volk

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Fraunhofer Institute for Mechanics of Materials IWM, Woehlerstrasse 11, 79108, Freiburg, Germany||Chat of Metal Forming and Casting, Technical University of Munich, Walther-Meissner-Strasse 4, 85748, Garching, Germany

Chair of Nonlinear Solid Mechanics, University of Twente, Drienerlolaan 5, 7522 NB, Enschede, die Netherlands

Fraunhofer Institute for Mechanics of Materials IWM, Woehlerstrasse 11, 79108, Freiburg, Germany

Chat of Metal Forming and Casting, Technical University of Munich, Walther-Meissner-Strasse 4, 85748, Garching, Germany

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2025

10.1016/j.msea.2024.147714

Materials science and engineering, A. Structural materials

Materials science and engineering, A. Structural materials

ISSN：0921-5093
年,卷(期)：2025.924(Feb.)
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