Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg

Improvement of formability of aluminium extrusion profiles by a local short-term heat treatment

Project Status: Active


The objective of the research project is the enhancement of the forming limits and the tailoring of mechanical component properties of curved aluminum extruded profiles by a local short-term heat treatment before the forming process. Prerequisite for the successful application is the basic scientific investigation of a short-term heat treatment of aluminum extrusions and their interaction with a subsequent bending operation. Based on the fundamental understanding and consideration of the complex stress and strain state within profile bending an appropriate property distribution is determined in order to improve the formality. A suitable, laser-assisted heat treatment should be derived using a heat treatment simulation, which predicts the new mechanical properties in dependency of the microstructural changes. Finally, the artificial ageing capability of the material will be investigated.




In cooperation with the Institute of Materials Science in Rostock.

Research Groups



    • Graser, M.; Wiesenmayer, S.; Müller, M.; Merklein, M.:
      Application of Tailor Heat Treated Blanks Technology in a Joining by Forming Process.
      Journal of Material Processing Technology 264(2019), pp. 259-272


    • Graser, M.; Pflaum, N.; Merklein, M.:
      Influence of a local laser heat treatment on the bending properties of aluminium extrusion profiles.
      Procedia CIRP 74(2018), pp. 780-784


    • Graser, M.; Degner, J.; Böhm, W.; Merklein, M.:
      Aluminiumlösungen aus maßgeschneidert wärmebehandelten Halbzeugen.
      Zeitschrift Konstruktion 06(2017), published


    • Merklein, M.; Lechner, M.; Graser, M.:
      Improvement of the Formability of Aluminum Extrusion Profiles by a Tailored, Local Short-Term Heat Treatment.
      In: Dimitrov Dimiter, Oosthuizen Tiaan (Edtr.): Proceedings COMA16, 2016, pp. 155-160

    • Graser, M.; Fröck, H.; Lechner, M.; Reich, M.; Keßler, O.; Merklein, M.:
      Influence of short-term heat treatment on the microstructure and mechanical properties of EN AW‑6060 T4 extrusion profiles – Part B.
      Production Engineering 10(2016)4-5, pp. 391–398

    • Fröck, H.; Graser, M.; Reich, M.; Lechner, M.; Merklein, M.; Keßler, O.:
      Influence of short-term heat treatment on the microstructure and mechanical properties of EN AW 6060 T4 extrusion profiles - Part A.
      Production Engineering 10(2016)4-5, pp. 383–389

    Letztes Update: 26.07.2018