Lehrstuhl für Fertigungstechnologie, Universität Erlangen-Nürnberg

Dr.-Ing. Dipl.-Wirtsch.-Ing. Michael Lechner

Egerlandstraße 11, 91058 Erlangen
Tel.: 09131/85-28310
Mail address: This e-mail address is being protected from spambots. You need JavaScript enabled to view it


Senior Manager Metal Forming


Scientific interests

  • Tailoring material properties
  • Digitization in production technology / Augmented reality





    • Vogel, M.; Lechner, M.; Hildenbrand, P.; Schulte, R.; Merklein, M.:
      Manufacturing of tailored blanks by flexible rolling and its application in a sheet-bulk metal forming process.
      In: Wieland, H. (Edtr.): Proceedings SCT2017, Verlag Stahleisen GmbH, 2017, published

    • Schulte, R.; Lechner, M.; Vogel, M.; Hildenbrand, P.; Merklein, M.:
      Umformtechnische Herstellung von Funktionsbauteilen aus Tailored Blanks durch Blechmassivumformverfahren.
      In: (Edtr.): 22. Umformtechnisches Kolloquium Hannover – Innovationspotentiale in der Umformtechnik. 15./16.03.2017, 2017, published

    • Schulte, R.; Hildenbrand, P.; Lechner, M.; Merklein, M.:
      Designing, manufacturing and processing of Tailored Blanks in a sheet-bulk metal forming process.
      In: (Edtr.): 45th SME North American Manufacturing Research Conference, NAMRC 45, LA, USA, 2017, accepted

    • Schulte, R.; Hildenbrand, P.; Vogel, M.; Lechner, M.; Merklein, M.:
      Analysis of fundamental dependencies between manufacturing and processing Tailored Blanks in sheet-bulk metal forming processes.
      In: (Edtr.): International Conference on the Technology of Plasticity, ICTP 2017, 17-22 September 2017, Cambridge, United Kingdom, 2017, accepted

    • Kirchen, I.; Vogel-Heuser, B.; Hildenbrand, P.; Schulte, R.; Lechner, M.; Vogel, M.; Merklein, M.:
      Data-driven Model Development for Quality Prediction in Forming Technology .
      In: (Edtr.): 15th IEEE International Conference on Industrial Informatics (INDIN) , 2017, published

    • Schulte, R.; Frey, P.; Hildenbrand, P.; Vogel, M.; Betz, C.; Lechner, M.; Merklein, M.:
      Data-Based Control of A Multi-Step Forming Process.
      In: (Edtr.): Proc. International Deep Drawing Research Group Conf. IDDRG 2017, 2017, published

    • Lechner, M.; Schulte, R.; Meckler, S.; Merklein, M.:
      Augmented Reality Technology for the Purpose of Sheet Metal Forming Simulation Evaluation.
      In: van den Boogaard, T. (Edtr.): 10th Forming Technology Forum 2017 - Model Based Control for Smart Forming Processes, Enschede, 2017, pp. 71-74


    • Merklein, M.; Wieland, M.; Lechner, M.; Bruschi, S.; Ghiotti, A.:
      Hot Stamping of Boron Steel Sheets with Tailored Properties: a Review.
      Journal of Materials Processing Technology 228(2016), pp. 11-24

    • Hildenbrand, P.; Lechner, M.; Merklein, M.:
      A new strategy for manufacturing tailored blanks by a flexible rolling process.
      Materials Science Forum 854(2016), pp. 99-105

    • Merklein, M.; Lechner, M.; Gröbel, D.; Löffler, M.; Schneider, T.; Schulte, R.; Hildenbrand, P.:
      Innovative approaches for controlling the material flow in sheet-bulk metal forming processes.
      Manufacturing Review 3(2016)2, pp. 1-17

    • Gröbel, D.; Schulte, R.; Hildenbrand, P.; Lechner, M.; Engel, U.; Sieczkarek, P.; Wernicke, S.; Gies, S.; Tekkaya, A.E.; Behrens, B.A.; Hübner, S.; Vucetic, M.; Koch, S.; Merklein, M.:
      Manufacturing of functional elements by sheet-bulk metal forming processes.
      Production Engineering: Research and Development 10(2016)1, pp. 63-80

    • 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

    • Merklein, M.; Graser, M.; Degner, J.; Lechner, M.; Herrmann, J.:
      Tailoring material properties in forming technology by a local heat treatment.
      In: Gronostajski, Z. (Edtr.): Advanced Metal Forming Processes in Automotive Industry, 2016, pp. 45-52

    • 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

    • Schulte, R.; Schneider, T.; Lechner, M.; Merklein, M.:
      Interaction of various functional elements in thin-walled cups formed by a sheet-bulk metal forming process.
      In: K. Saanouni (Edtr.): NUMIFORM 2016: The 12th International Conference on Numerical Methods in Industrial Forming Processes , MATEC Web Conf. , 2016, pp. 07003

    • Merklein, M.; Lechner, M.; Böhm, W.; Degner, J.:
      Scale-up of Innovative Forming Solutions from Scientific Fundamentals to Industrial Applications.
      In: Materials Science and Technology 2016 (Edtr.): 2016, published on CD


    • Hagenah, H.; Merklein, M.; Lechner, M.; Schaub, A.; Lutz, S.:
      Determination of the mechanical properties of hot stamped parts from numerical simulations.
      Procedia CIRP 33(2015), pp. 167-172

    • Merklein, M.; Graser, M.; Lechner, M.:
      Experimental investigation of heat-treated aluminum profiles.
      Key Engineering Materials 651-653(2015), pp. 59-64

    • Merklein, M.; Lechner, M.; Graser, M.:
      Influence of a short-term heat treatment on the formability and ageing characteristics of aluminum profiles.
      In: WLT e.V. (Edtr.): Lasers in Manufacturing Conference, 2015, published

    • Böhm, W.; Merklein, M.; Lechner, M.:
      Innovative aluminium lightweight design by the combination of Accumulative Roll Bonding and local intermediate heat treatment.
      Materials Today: Proceedings 2(2015)10, pp. 4992–4997

    • Kahrimanidis, A.; Lechner, M.; Wortberg, D.; Merklein, M.:
      Effiziente maßgeschneiderte Wärmebehandlung von Blechhalbzeugen in der Serienfertigung.
      wt online 4(2015), pp. 246-250

    • Merklein, M.; Tsoupis, I.; Gnibl, T.; Lechner, M.:
      Innovative manufacturing solutions for the efficient production of car bodies.
      In: Schmeing, K. (Edtr.): Forming in Car Body Engineering 2015, Vincentz Network GmbH & Co. KG, Hannover, 2015, pp. 67-86

    • Degner, J.; Suttner, S.; Tsoupis, I.; Lechner, M.; Merklein, M.:
      Manufacturing of Innovative Aluminum Components by Combining Shear Cutting Operation and Tailor Heat Treated Blank Technique.
      In: Landgrebe, D.; Drossel, W.-G.; Putz, M. (Edtrs.): 5th International Conference on Accuracy in Forming Technology, Verlag Wissenschaftliche Scripten, 2015, pp. 193-208

    • Kahrimanidis, A.; Lechner, M.; Degner, J.; Wortberg, D.; Merklein, M.:
      Process Design of Aluminum Tailor Heat Treated Blanks.
      Materials 8(2015)12, pp. 8524-8538

    • Merklein, M.; Junker, D.; Schaub, A.; Kretschmer, A.; Lechner, M.:
      Development of a New Method for Producing Plane Expanded Metal by Laser Cutting and Forming of Metal Plates under Uniaxial Tension.
      Key Engineering Materials 639(2015), pp. 131-136

    • Merklein, M.; Junker, D.; Schaub, A.; Kretschmer, A.; Lechner, M.:
      Development of a New Method for Producing Plane Expanded Metal by Laser Cutting and Forming of Metal Plates under Uniaxial Tension.
      Key Engineering Materials 639(2015), pp. 131-136


    • Merklein, M.; Hofmann, M.; Lechner, M.; Kuppert, A.:
      A Review on Tailored Blanks - Production, Applications and Evaluation.
      J. Mater. Process. Tech. 214(2014)2, pp. 151-164

    • Ahuja, B.; Schaub, A.; Karg, M.; Lechner, M.; Merklein, M.; Schmidt, M.:
      Developing LBM process parameters for Ti-6Al-4V thin wall structures and determining the corresponding mechanical characteristics.
      Physics Procedia 56 (2014), pp. 90-98

    • Lechner, M.; Zimmermann, A.; Graser, M.; Merklein, M.:
      Efficient Aluminum - Qualifizierung des Einsatzes höchstfester Aluminiumlegierungen im Karosseriebau.
      In: Franke, J.; Kreitlein, S.; Hoeft, A. (Edtrs.): Tagungsband zum 1. Green Factory Bavaria Kolloquium 2014 - Engergieeffiziente Produktion, FAPS, 2014, pp. 200-205

    • Lechner, M.; Hofmann, M.; Kuppert, A.; Merklein, M.:
      Influence of Pre-straining and Heat Treatment on the Yield Surface of Precipitation Hardenable Aluminum Alloys.
      Physics Procedia 56(2014), pp. 1400-1409

    • Merklein, M.; Affronti, E.; Kuppert, A.; Maier, A.; Lechner, M.:
      The correlation coefficient method: from the beginning to the development.
      In: Institut für Virtuelle Produktion, ETH Zürich (Edtrs.): Workshop Time-dependent Methods for the Evaluation of FLC, 2014, pp. 115-122


    • Merklein, M.; Lechner, M.:
      Manufacturing flexibilisation of metal forming components by tailored blanks.
      In: D. Dimitrov; C. Schutte (Edtrs.): Proc. Conf. Competitive Manufacturing, 2013, pp. 165-170

    • Lechner, M.; Kuppert, A.; Merklein, M.:
      Comprehensive material characterization for an intermediate heat treatment.
      Key Eng. Mater. 549(2013), pp. 39-44

    • Lechner, M.; Kuppert, A.; Hagenah, H.; Merklein, M.:
      Optimization of the heat treatment layout and blank outline of THTB.
      Key Eng. Mater. 554-557(2013), pp. 2465-2471

    • Merklein, M.; Hofmann, M.; Biasutti, M.; Lechner, M.:
      Numerical optimisation of a shear specimen geometry according to ASTM.
      Key Eng. Mater. 549(2013), pp. 317-324

    • Merklein, M.; Hagenah, H.; Lechner, M.; Kuppert, A.:
      Simulationsgestützte Auslegung maßgeschneiderter wärmebehandelter Aluminiumhalbzeuge.
      In: Tekkaya A. E.; Liewald M. (Edtrs.): 16. Workshop Simulation in der Umformtechnik, Institut für Umformtechnik und Leichtbau, Technische Universität Dortmund, 2013, pp. 90-101

    • Merklein, M.; Lechner, M.; Kuppert, A.:
      Tailor Quenched Blanks.
      Danish-German Aerospace Collaboration Kick-off (2013), accepted

    • Lechner, M.; Böhm, W.; Nguyen, H.; Merklein, M.:
      Herstellung maßgeschneiderter Aluminiumwerkstoffe.
      Zeitschrift Konstruktion 11/12(2013), pp. 11-13

    • Schaub, A.; Lechner, M.; Merklein, M.:
      Druckversuch bei erhöhten Temperaturen.
      In: H.J. Christ (Edtr.): Tagungsband Werkstoffprüfung DGM, Stahleisen, 2013, pp. 85-90


    • Merklein, M.; Lechner, M.; Schneider, T.; Plettke, R.:
      Tailored Heat Treated Profiles - Enhancement of the Forming Limit of Aluminum Profiles under Bending Load.
      Key Eng. Mater. 504-506(2012), pp. 375-380

    • Merklein, M.; Lechner, M.:
      Flexibilisierung der Fertigung umformtechnisch erzeugter Bauteile durch prozessangepasste Halbzeuge.
      In: P. Groche (Edtr.): 11. Umformtechnisches Kolloquium Darmstadt, Meisenbach, 2012, pp. 87-99

    • Merklein, M.; Lechner, M.:
      Tailored solutions in mechanical engineering.
      Public Service Review (2012), pp. 35-37

    • Merklein, M.; Böhm, W.; Lechner, M.:
      Tailoring material properties of aluminum by local laser heat treatment.
      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.
      Prod. Eng. Res. Dev. 6(2012)6, pp. 541-549

    • Merklein, M.; Lechner, M.; Kuppert, A.:
      Trends in der Aluminiumumformung.
      Tagungsband zum Cluster-Forum Innovationen in der Aluminium-Umformtechnik (2012), accepted

    • Buhr, W.; Winderlich, M.; Kaupper, M.; Lechner, M.; Wieland, M.; Merklein, M.; Krammer, P.; Renger, L:
      Verfahren zur Herstellung eines pressgehärteten Formbauteils aus Stahlblech
      Europäisches Patent EP 12401128.9 - 1215, Anmeldetag 29.06.2012, 2012


    • Merklein, M.; Lechner, M.; Kuppert, A.:
      Verfahren und Werkzeug zur Wärmebehandlung von Aluminiumblechwerkstoff sowie nach einem derartigen Verfahren wärmebehandelter Aluminiumblechwerkstoff
      Deutsches Patent EP 12 178 269.2, Priorität 05.08.2011, Anmeldetag 27.07.2012, 2011