Theoretical aspects of hot forming of sheet metals with graded characteristics: Dedicated to Prof. Bernhard Wielage on the occasion of his 65th birthday

Reimund Neugebauer; Enrique Meza-García; Hangfeng Cai; Lutz Lachmann; Detlef Michael

doi:10.3139/146.110554

Article

Theoretical aspects of hot forming of sheet metals with graded characteristics

Dedicated to Prof. Bernhard Wielage on the occasion of his 65^th birthday

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Published/Copyright: June 11, 2013

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From the journal International Journal of Materials Research Volume 102 Issue 8

Abstract

In the present work some essential aspects related to the simulation of phase transformation during hot forming simulation are discussed. A new material model used for hot forming simulation in commercial finite element code LS-DYNA was applied. Experimental values and bibliographical data were used in order to find optimum input parameters. Based on these parameters a hypothetical hot forming process for a graded component part was simulated. Using tools at varied temperatures and with different thermal properties seems to be a feasible method to achieve a better control of the phase transitions during hot forming.

Keywords: Hot forming process; Phase transformation; 22MnB5 alloy

* Correspondence address, PD Dr.-Ing. Lutz Lachmann, Chemnitz University of Technology, Institute for Machine Tools and Production Processes, Reichenhainer Str. 70, D-09126 Chemnitz, Germany. Tel.: +49 371 531 35109, Fax: +49 371-531 23509, E-mail: lutz.lachmann@mb.tu-chemnitz.de

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Received: 2010-2-2

Accepted: 2011-6-21

Published Online: 2013-06-11

Published in Print: 2011-08-01

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https://doi.org/10.3139/146.110554

Keywords for this article

Hot forming process; Phase transformation; 22MnB5 alloy