Thermo-mechanical forming of al-mg-si sheet – modelling of warm forming, heat treatments and transformations

A.H. (Ton) Van Den Boogaard¹, Srihari Kurukuri², Manojit Ghosh², Alexis G. Miroux²

¹University of Twente, Enschede, The Netherlands.
²Materials Innovation Institute, Delft, The Netherlands.

DOI:

https://doi.org/10.7494/cmms.2009.1.0201

Abstract:

In warm forming of aluminum sheet, the temperature and strain rates vary considerably. In simulations, the material model must be capable to predict stresses within this wide range. Here, the physically based Nes model is used to describe the behavior of AA6061-T4 sheet material under warm forming conditions. A significant change of earing behavior is found between room temperature and 250 ºC. Crystal plasticity calculations showed a reasonable correspondence of changing r-values if extra slip systems are considered at high temperatures. Satisfactory results are obtained for simulation of tensile tests and cylindrical deep drawing.

Cite as:

Boogaard, A.V.D., Kurukuri, S., Ghosh, M., & Miroux, A.G. (2009). Thermo-mechanical forming of al-mg-si sheet – modelling of warm forming, heat treatments and transformations. Computer Methods in Materials Science, 9(1), 5 – 11. https://doi.org/10.7494/cmms.2009.1.0201

Article (PDF):

Keywords:

Warm forming, Aluminum, Material model, Deep drawing, Nes model

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