Numerical investigation of temperature and phase development of (deformation-) dilatometer specimens

Lutz S, Weninger J, Helldoerfer B, Merklein M (2014)

Publication Type: Conference contribution

Publication year: 2014


Publisher: Trans Tech Publications Ltd

Book Volume: 611-612

Pages Range: 1539-1544

Conference Proceedings Title: Material Forming - ESAFORM 2014

ISBN: 9783038351061

DOI: 10.4028/


The Gleeble 3500 thermo-mechanical testing machine with ISO-Q dilatometer set-up allows the creation of time temperature transformation diagrams at high cooling rates, after deformation and under constant load with a simple experimental set-up. An isothermal plane with temperature gradients perpendicular to this plane arises in the sample which is used for dilatometrical evaluation. The homogeneity and size of this isothermal region has a decisive influence on the measurement results, but cannot be measured with sufficient accuracy. To gain an accurate understanding of the processes in the sample, a coupled thermo-electrical, thermo-metallurgical, thermo-mechanical finite element model of the experiments is set up. To map the temperature control circuit of the machine, a PID controller is implemented, which controls the voltage of the conductive sample heating between the simulation steps. By comparing the temperature and hardness distribution with the experiments, it is shown that in this way the temperature distribution and phase transformation can be mapped. By the findings, the experimental setup was adjusted. This led to an improvement of the measurement results. © 2014 Trans Tech Publications, Switzerland.

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Lutz, S., Weninger, J., Helldoerfer, B., & Merklein, M. (2014). Numerical investigation of temperature and phase development of (deformation-) dilatometer specimens. In Larkiola, J. (Eds.), Material Forming - ESAFORM 2014 (pp. 1539-1544). Trans Tech Publications Ltd.


Lutz, Stefan, et al. "Numerical investigation of temperature and phase development of (deformation-) dilatometer specimens." Proceedings of the Material Forming - ESAFORM 2014 Ed. Larkiola, J., Trans Tech Publications Ltd, 2014. 1539-1544.

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