Professorship for materials mechanics

Organisational unit: Professoship

Organisation profile

The professorship for materials mechanics with a focus on process simulation is a shared professorship carried out in cooperation with the Helmholtz-Zentrum hereon GmbH. In particular, this is concerned with the digital modelling of technological production processes and materials, whereby considerable focus is placed on local modification processes, solid state joining processes and forming processes. The modelling approaches which are used for these range from micromechanics (e.g. crystal plasticity and phase field simulations), to continuum mechanics for describing material behaviour, to approaches for complex process simulations.

Main research areas

At the same time, one of the main focuses of the activities carried out by the professorship at the Leuphana is the development and application of mathematical models (material models) for describing microstructure development and the deformation behaviour of various metallic materials across multiple length scales. These developments often take place in close conjunction with the experimental work being carried out at the hereon. The length scale and timescale on which the relevant processes in the material take place or on which these are modelled depends on the material, the process and the component. Over the past few years, the work group has built up a vast wealth of experience when it comes to modelling many material systems such as these. In addition to carrying out intense studies on deformation processes in metallic materials, the work group has also dealt with additional material systems such as metallic glasses and polymers.

At the Helmholtz-Zentrum hereon, the professorship deals specifically with the experimental study and process modelling of solid state joining processes and manufacturing processes which act on a local level. Some named examples of these are joining processes such as friction stir welding and laser welding, as well as additive manufacturing processes such as friction welding and laser deposition welding. This is accompanied by local modification processes for the targeted adjustment of residual stresses (residual stress engineering), such as laser shock peening and hammer peening. One of the fundamental goals of these research activities is to investigate the entire system of process, microstructure and property through a combination of experimental and simulation-based approaches in order to achieve an improved physical understanding thereof. By adapting the process parameters in a targeted manner, the insights gained can be used to optimise material or structural behaviour, e.g. with regard to deformation and failure behaviour.

The professorship plays an active role in various national and international organisations such as the GAMM (International Association of Applied Mathematics and Mechanics) or the ZHM (Centre for Advanced Materials).

Key teaching focuses are in the fields of applied mechanics and material modelling, as well as in the provision of additional engineering basics.

  1. 2022
  2. Published
  3. Published

    Comparing the fatigue performance of Ti-4Al-0.005B titanium alloy T-joints, welded via different friction stir welding sequences

    Su, Y., Li, W., Shen, J., Bergmann, L., dos Santos, J. F., Klusemann, B. & Vairis, A., 24.11.2022, In: Materials Science & Engineering A. 859, 144227.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  4. Published

    A multi-scaled process study of dissimilar friction stir welding of Eurofer RAFM steel to PM2000 ODS alloy

    Wang, J., Fu, B., Shen, J., Bergmann, L., Lu, X., dos Santos, J. F. & Klusemann, B., 01.09.2022, In: Journal of Materials Processing Technology. 307, 117679.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  5. Published

    Effect of rotational speed and double-sided welding in friction stir–welded dissimilar joints of aluminum alloy and steel

    Bergmann, L. A., Batistão, B. F., de Alcântara, N. G., Gargarella, P. & Klusemann, B., 01.09.2022, In: Welding in the World. 66, 9, p. 1747-1756 10 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  6. Published

    Tool wear mechanisms and effects on refill friction stir spot welding of AA2198-T8 sheets

    Castro, C. C. D., Shen, J., Plaine, A. H., Suhuddin, U. F. H., Alcântara, N. G. D., Santos, J. F. D. & Klusemann, B., 01.09.2022, In: Journal of Materials Research and Technology. 20, p. 857-866 10 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  7. Published

    Comparison of Friction Extrusion Processing from Bulk and Chips of Aluminum-Copper Alloys

    Rath, L., Suhuddin, U. F. H. & Klusemann, B., 22.07.2022, Achievements and Trends in Material Forming: Peer-reviewed extended papers selected from the 25 th International Conference on Material Forming (ESAFORM 2022). Vincze, G. & Barlat, F. (eds.). Baech: Trans Tech Publications Ltd, p. 471-480 10 p. (Key Engineering Materials; vol. 926).

    Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review

  8. Published

    Effect of Temperature and Strain Rate on Formability of Titanium Alloy KS1.2ASN

    Sikhamov, R., Ventzke, V., Dorn, F., Klusemann, B., Khalifa, N. B. & Kashaev, N., 22.07.2022, Achievements and Trends in Material Forming: Peer-reviewed extended papers selected from the 25 th International Conference on Material Forming (ESAFORM 2022). Vincze, G. & Barlat, F. (eds.). Baech: Trans Tech Publications Ltd, p. 939-946 8 p. (Key Engineering Materials; vol. 926).

    Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review

  9. Published

    Experimental Investigation of Efficiency and Deposit Process Temperature During Multi-Layer Friction Surfacing

    Kallien, Z., Roos, A. & Klusemann, B., 22.07.2022, Achievements and Trends in Material Forming: Peer-reviewed extended papers selected from the 25 th International Conference on Material Forming (ESAFORM 2022). Vincze, G. & Barlat, F. (eds.). Baech: Trans Tech Publications Ltd, p. 187-193 7 p. (Key Engineering Materials; vol. 926).

    Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review

  10. Published

    Numerical Investigation of Influence of Spot Geometry in Laser Peen Forming of Thin-Walled Ti-6Al-4V Specimens

    Pöltl, D., Keller, S., Chupakhin, S., Sala, S. T., Kashaev, N. & Klusemann, B., 22.07.2022, Achievements and Trends in Material Forming: Peer-reviewed extended papers selected from the 25 th International Conference on Material Forming (ESAFORM 2022). Vincze, G. & Barlat, F. (eds.). Baech: Trans Tech Publications Ltd, p. 2293-2302 10 p. (Key Engineering Materials; vol. 926).

    Research output: Contributions to collected editions/worksArticle in conference proceedingsResearchpeer-review

  11. Published

    Effect of laser peen forming process parameters on bending and surface quality of Ti-6Al-4V sheets

    Sala, S. T., Keller, S., Chupakhin, S., Pöltl, D., Klusemann, B. & Kashaev, N., 01.07.2022, In: Journal of Materials Processing Technology. 305, 16 p., 117578.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  12. Published

    Experimental and numerical investigation of laser beam-welded Al-Cu-Li joints using micro-mechanical characteristics

    Examilioti, T. N., Papanikos, P., Kashaev, N., Klusemann, B. & Alexopoulos, N. D., 01.07.2022, In: Journal of Materials Research and Technology. 19, p. 2431-2446 16 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  13. Published

    Fundamental study of multi-track friction surfacing deposits for dissimilar aluminum alloys with application to additive manufacturing

    Soujon, M., Kallien, Z., Roos, A., Zeller-Plumhoff, B. & Klusemann, B., 01.07.2022, In: Materials and Design. 219, 15 p., 110786.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  14. Published

    Combined experimental-numerical analysis of the temperature evolution and distribution during friction surfacing

    Kallien, Z. & Klusemann, B., 15.05.2022, In: Surface and Coatings Technology. 437, 11 p., 128350.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  15. Published

    Changes in processing characteristics and microstructural evolution during friction extrusion of aluminum

    Halak, R. M., Rath, L., Suhuddin, U. F. H. R., dos Santos, J. F. & Klusemann, B., 01.05.2022, In: International Journal of Material Forming. 15, 3, 14 p., 24.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  16. Published

    Tailoring powder strengths for enhanced quality of cold sprayed Al6061 deposits

    Huang, C., List, A., Shen, J., Fu, B., Yin, S., Chen, T., Klusemann, B., Gärtner, F. & Klassen, T., 01.03.2022, In: Materials and Design. 215, 18 p., 110494.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  17. Published

    Coupled Modeling Approach for Laser Shock Peening of AA2198-T3: From Plasma and Shock Wave Simulation to Residual Stress Prediction

    Pozdnyakov, V., Keller, S., Kashaev, N., Klusemann, B. & Oberrath, J., 01.01.2022, In: Metals. 12, 1, 19 p., 107.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  18. Published

    Numerical investigation of laser beam-welded AA2198 joints under different artificial ageing conditions

    Examilioti, T., Germanou, A., Papanikos, P., Kashaev, N., Klusemann, B. & Alexopoulos, N. D., 01.01.2022, In: Procedia Structural Integrity. 42, p. 244-250 7 p.

    Research output: Journal contributionsConference article in journalResearch

  19. 2021
  20. Published

    Multimodal analysis of spatially heterogeneous microstructural refinement and softening mechanisms in three-pass friction stir processed Al-4Si alloy

    Escobar, J., Gwalani, B., Olszta, M., Silverstein, J., Overman, N., Bergmann, L., dos Santos, J. F., Staron, P., Maawad, E., Klusemann, B., Mathaudhu, S. & Devaraj, A., 20.12.2021, In: Journal of Alloys and Compounds. 887, 13 p., 161351.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  21. Published

    Experimental and numerical analysis of refill friction stir spot welding of thin AA7075-T6 sheets

    Janga, V. S. R., Awang, M., Yamin, M. F., Suhuddin, U. F. H., Klusemann, B. & dos Santos, J. F., 06.12.2021, In: Materials. 14, 23, 20 p., 7485.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  22. Published

    Simulation of fatigue crack growth in residual‐stress‐afflicted specimen with a phase‐field model

    Seiler, M., Keller, S., Kashaev, N., Klusemann, B. & Kästner, M., 01.12.2021, In: PAMM. 21, 1, 2 p., e202100210.

    Research output: Journal contributionsConference abstract in journalResearch