Project Status: Active
Goal of the research project is the enhancement of the formability of precipitation hardenable aluminium alloys by local laser assisted short term heat treatment in multistage forming operations. Key idea of the technology is the local adaption of the mechanical properties after a first forming step and their optimization for the subsequent forming operation. The partial change of the mechanical properties is obtained by a short term heat treatment. Based on the new property distribution the material flow during the second forming is improved and the formability of the material can be enhanced. The work covers all necessary steps for a successful application of the technology. After a material characterization in dependency of the pre-straining and the heat treatment, the heat affected zone (HAZ), which is a result of the high heat conductivity of aluminum alloys will be analyzed. In the end appropriate heat treatment layouts were designed via numerical simulation. The enhancement of the formability was demonstrated with a real multi-stage forming process.
Merklein, M.; Lechner, M.:
Manufacturing flexibilisation of metal forming components by tailored blanks.
In: Proc. of COMA 13, (2013), Stellenbosch, South Africa, accepted
Merklein, M.; Johannes, M.; Lechner, M.; Kuppert, A.:
A Review on Tailored Blanks - Production, Applications and Evaluation.
In: Journal of Materials Processing Technology, (2013), submitted
Merklein, M.; Hagenah, H.; Lechner, M.; Kuppert, A.:
Simulationsgestützte Auslegung maßgeschneiderter wärmebehandelter Aluminiumhalbzeuge.
In: Workshop Simulation in der Umformtechnik, (2013), submitted
Merklein, M.; Böhm, W.; Lechner, M.:
Tailoring material properties of aluminum by local laser heat treatment.
In: Schmidt, M.; Vollertsen, F.; Geiger, M. (Edt.): Physics Procedia, 39(2012), pp. 232–239
Merklein, M.; Lechner, M.; Kuppert, A.:
Enhancement of formability of aluminum alloys in multi-stage forming operations by a local intermediate heat treatment.
In: Production Engineering, 6(2012)6, pp. 541-549
Merklein, M.; Lechner, M.; Kuppert, A.:
Trends in der Aluminiumumformung.
In: Tagungsband zum Cluster-Forum Innovationen in der Aluminium-Umformtechnik, (2012), Forschungs- und Innovationszentrum – FIZ, BMW Group, München, submitted
