What is it about?
The information related to the friction acting at the tool-workpiece contact interface is very useful. This is why it produces an increase in the energy required for deformation on one hand and it acts sometimes also as a guide of the flow material inside the workpiece on the other hand. The modeling of the material behaviour taking into account such variable allows to better understand the material behaviour itself under given conditions in terms of temperature and deformation velocity. The increase in temperature, due to the subsliding of material at the tool-workpiece contact interface, produces an increase in the uniformity of deformation. A similar effect is represented by the pre-deformation.
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Why is it important?
It allows to show the conditions under which the effect of friction is as low as possible. It allows to model and to manage the friction effect during forming.
Perspectives
Such kind of research allows to identify and to manage from the macro-point of view the material behaviour under given and selected conditions. Such results need to be verified from the micro- point of view in order to better understand the effect of pre-deformation.
Dr CARLO G BRUNI
DIISM - UNIVERSITA' POLITECNICA DELLE MARCHE
Read the Original
This page is a summary of: Modeling of friction behaviour during in temperature compression tests on aluminium alloys, January 2019, American Institute of Physics,
DOI: 10.1063/1.5112551.
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