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https://www.ias.ac.in/article/fulltext/sadh/045/0189

Self-heating; inverse method; behavior law; plastic work energy

Self-heating effect for thermomechanical forming processes turns out to be dramatically significant for material with a very low melting point, such as zinc alloys. Zinc low melting point temperature (419.54°C) accentuates metallurgical effects when it is formed in cold or warm manufacturing processes. During deformation, self-heating can therefore induce a relative softening in the behavior law (that could improve formability) which competes with the conventional plastic hardening of the material. Hence, the correct identificationof zinc material behavior has to account for both softening and hardening phenomena. This paper studies the effect of plastic work energy in the material identified by means of tensile tests by combining digital image correlation and infrared thermography technique.

M MILESI¹ D PINO MUNOZ² A LAGROUM² C PRADILLE³ P O BOUCHARD²

1. VM Building Solutions, Les mercuriales, 40 rue Jean-Jaure`s, 93176 Bagnolet Cedex, France
2. MINES ParisTech, PSL Research University, CEMEF - Centre de mise en forme des mate´riaux, CNRS UMR 7635, CS 10207 rue Claude Daunesse, 06904 Sophia Antipolis Cedex, France
3. Mat Xper, 19 traverse du Barri, 06560 Valbonne, France

Published

27 July 2020

Manuscript received

1 October 2019

Manuscript revised

12 May 2020

Accepted

30 May 2020