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. 2025
  2. Published

    Friction surfacing of aluminum alloys on Ti6Al4V - Investigation of process parameters, material deposition behavior and bonding mechanisms

    Hoffmann, M., Roos, A. & Klusemann, B., 01.05.2025, In: Surface and Coatings Technology. 503, 12 p., 131985.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  3. Published

    Impact of friction stir welding-like heat cycles on precipitates in AA7050 analysed by SAXS and numerical modelling

    Henninger, S., Chafle, R., Maawad, E., Klusemann, B., Müller, M. & Staron, P., 01.03.2025, In: Materialia. 39, 8 p., 102343.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  4. E-pub ahead of print

    Improving mechanical properties of constrained friction processing Mg-Zn-Ca alloys by modifying texture using multiple pass processing

    Chen, T., Fu, B., Suhuddin, U. F. H. R., Shen, T., Li, G., Maawad, E., Shen, J., Santos, J. F. D., Bergmann, J. P. & Klusemann, B., 01.03.2025, (E-pub ahead of print) In: Journal of Materials Science and Technology.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  5. Published

    Effect of ambient conditions in friction surfacing

    Hoffmann, M., Duda, E. A., Aspes, P. & Klusemann, B., 02.2025, In: Welding in the World. 69, 2, p. 397-406 10 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  6. E-pub ahead of print

    Mechanical behavior, microstructural evolution and texture analysis of AA2024-T351 processed by multi-layer friction surfacing with high build rates

    Hoffmann, M., Roos, A. & Klusemann, B., 29.01.2025, (E-pub ahead of print) In: Progress in Additive Manufacturing. 15 p., 146582.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  7. Published

    Enhancement of the mechanical properties of semi-stationary bobbin tool friction stir welded joints in AA2219 through post-weld heat treatment

    Rezende, G. N., Bernardi, M., Hoffmann, M., Bergmann, L., Zepon, G. & Klusemann, B., 01.01.2025, In: Materials Science and Engineering: A. 920, 11 p., 147498.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  8. Published

    Deformation by design: data-driven approach to predict and modify deformation in thin Ti-6Al-4V sheets using laser peen forming

    Sala, S. T., Bock, F. E., Pöltl, D., Klusemann, B., Huber, N. & Kashaev, N., 01.2025, In: Journal of Intelligent Manufacturing. 36, 1, p. 639-659 21 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  9. Accepted/In press

    Thermal Degradation and Decomposition of FR4 Laminate PCB Substrates Joined by Friction Riveting

    Rodrigues, C. F., Blaga, L. & Klusemann, B., 2025, (Accepted/In press) In: Applied Composite Materials. 15 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  10. 2024
  11. Published

    Corrosion behavior of multi-layer friction surfaced structure from dissimilar aluminum alloys

    Antunes Duda, E., Kallien, Z., da Silva Soares, S., Hernandez Schneider, T., Ribeiro Piaggio Cardoso, H., Vieira Braga Lemos, G., Falcade, T., Reguly, A. & Klusemann, B., 12.2024, In: Scientific Reports. 14, 1, 10 p., 9882.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  12. Published

    Insight into layer formation during friction surfacing: Relationship between deposition behavior and microstructure

    Hoffmann, M., Kallien, Z., Antunes Duda, E. & Klusemann, B., 12.2024, In: Materials Today Communications. 41, 13 p., 110337.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  13. Published

    Analysis of mechanical properties and microstructure of single and double-pass friction stir welded T-joints for aluminium stiffened Panels

    Wagner, D., Bernardi, M., Grassel, F., Chen, T., Schimanski, K., Bergmann, L. & Klusemann, B., 11.2024, In: Materials and Design. 247, 11 p., 113438.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  14. Published

    Local and global mechanical properties of orbital friction stir welding on API X65 PSL2 steel / Inconel 625 clad pipes

    Volff Amavisca, C., Vieira Braga Lemos, G., Dornelles Ramos, F., Bergmann, L., Reguly, A. & Klusemann, B., 10.2024, In: International Journal of Advanced Manufacturing Technology. 134, 7-8, p. 3325-3336 12 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  15. Published

    Fatigue crack initiation and propagation in plain and notched PBF-LB/M, WAAM, and wrought 316L stainless steel specimens

    Braun, M., Chen, T., Shen, J., Fassmer, H., Klusemann, B., Sheikhi, S., Ehlers, S., Müller, E., Sarmast, A. & Schubnell, J., 01.08.2024, In: Materials and Design. 244, 18 p., 113122.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  16. Published

    Application of Friction Riveting technique for the assembly of electronic components on printed circuit boards (PCB)

    Rodrigues, C. F., Boas, M. C. V., Blaga, L., Bartz, O. & Klusemann, B., 08.2024, In: International Journal of Advanced Manufacturing Technology. 133, 11-12, p. 5163-5173 11 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  17. Published

    Feasibility study of friction stir joining of aluminium with carbon fibre reinforced thermoplastic composite

    Malaske, L., Blaga, L. A., Bermann, L., Ahmad, B., Zhang, X. & Klusemann, B., 07.2024, In: Journal of Composite Materials. 58, 17, p. 1987-2003 17 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  18. Published

    Ductility and fracture behavior of cold spray additive manufactured zinc

    Huang, C. J., Chen, T., Fu, B. L., Zhang, Z. M., List, A., Wiehler, L., Klusemann, B., Li, W. Y., Gärtner, F. & Klassen, T., 05.06.2024, In: Additive Manufacturing. 89, 16 p., 104310.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  19. Published

    CALPHAD-based modeling of pressure-dependent Al, Cu and Li unary systems

    Mathew, E., Chafle, R. & Klusemann, B., 01.06.2024, In: Calphad: Computer Coupling of Phase Diagrams and Thermochemistry. 85, 14 p., 102692.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  20. Published

    Effect of thermo-mechanical conditions during constrained friction processing on the particle refinement of AM50 Mg-alloy phases

    de Castro, C. C., Neves, A. M. & Klusemann, B., 06.2024, In: Journal of Magnesium and Alloys. 12, 6, p. 2298-2311 14 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  21. Published

    Behavior of volumetric core defects in friction extrusion of wire from Al-Cu alloy

    Rath, L., Suhuddin, U. F. H. & Klusemann, B., 15.05.2024, Material Forming, ESAFORM 2024: The 27th International ESAFORM Conference on Material Forming – ESAFORM 2024. Araujo, A. C., Cantarel, A., Chabert, F., Korycki, A., Olivier, P. & Schmidt, F. (eds.). Millersville, PA: Association of American Publishers, p. 763-770 8 p. (Materials Research Proceedings; vol. 41).

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

  22. Published

    Dissimilar welding of aluminum to AlSi-coated steel sheets using refill friction stir spot welding: A feasibility study

    Shen, T., Fu, B., Chen, T., Suhuddin, U. & Klusemann, B., 15.05.2024, Material Forming, ESAFORM 2024: The 27th International ESAFORM Conference on Material Forming – ESAFORM 2024. Araujo, A. C., Cantarel, A., Chabert, F., Korycki, A., Olivier, P. & Schmidt, F. (eds.). Millersville, PA: Association of American Publishers, p. 1705-1713 9 p. (Materials Research Proceedings; vol. 41).

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

  23. Published

    Eigenstrain method in simulations of laser peen forming of curved surfaces

    Poltl, D., Teja Sala, S., Kashaev, N. & Klusemann, B., 15.05.2024, Material Forming, ESAFORM 2024: The 27th International ESAFORM Conference on Material Forming – ESAFORM 2024. Araujo, A. C., Cantarel, A., Chabert, F., Korycki, A., Olivier, P. & Schmidt, F. (eds.). Millersville: Association of American Publishers, p. 2355-2363 9 p. (Materials Research Proceedings; vol. 41).

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

  24. Published

    Numerical simulation of friction extrusion: process characteristics and material deformation due to friction

    Diyoke, G., Rath, L., Chafle, R., Ben Khalifa, N. & Klusemann, B., 05.2024, In: International Journal of Material Forming. 17, 3, 13 p., 26.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  25. Published

    Experimental investigation of crack propagation mechanism in refill friction stir spot joints of AA6082-T6

    Becker, N., dos Santos, J. F. & Klusemann, B., 16.04.2024, In: Engineering Fracture Mechanics. 300, 11 p., 109963.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  26. Published

    Investigation of microstructural and mechanical properties in AA2024-T351 multi-layer friction surfacing

    Hoffmann, M., Roos, A. & Klusemann, B., 30.03.2024, In: Surface and Coatings Technology. 480, 11 p., 130610.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  27. Published

    Behavior of microstructure and mechanical properties in the stir zone of friction stir welded ME21 magnesium alloy

    Pasetti-Roza, A., Victoria-Hernandez, J., Costa Pereira da Cunha, P. H., de Lima Lessa, C. R., Andrei Bergmann, L., Kurz, G., Letzig, D. & Klusemann, B., 01.03.2024, In: Journal of Materials Research and Technology. 29, p. 4895-4901 7 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  28. Published

    Application of friction surfacing for solid state additive manufacturing of cylindrical shell structures

    Kallien, Z., Rath, L., Roos, A. & Klusemann, B., 01.02.2024, In: Additive Manufacturing Letters. 8, 8 p., 100184.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  29. Published

    Application of novel constrained friction processing method to produce fine grained biomedical Mg-Zn-Ca alloy

    Chen, T., Fu, B., Shen, J., Suhuddin, U. F. H. R., Wiese, B., Huang, Y., Wang, M., dos Santos, J. F., Bergmann, J. P. & Klusemann, B., 02.2024, In: Journal of Magnesium and Alloys. 12, 2, p. 516-529 14 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  30. Published

    Effect of filler materials on the tensile properties and fracture toughness of laser beam welded AA2198 joints under different ageing conditions

    Examilioti, T. N., Karanikolas, D., Riekehr, S., Al-Hamdany, N., Papanikos, P., Klusemann, B., Kashaev, N. & Alexopoulos, N. D., 23.01.2024, In: Engineering Fracture Mechanics. 295, 20 p., 109811.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  31. Published

    Data-driven and physics-based modelling of process behaviour and deposit geometry for friction surfacing

    Bock, F. E., Kallien, Z., Huber, N. & Klusemann, B., 01.01.2024, In: Computer Methods in Applied Mechanics and Engineering. 418, Part A, 26 p., 116453.

    Research output: Journal contributionsJournal articlesResearch

  32. Published

    Deep Rolling for Tailoring Residual Stresses of AA2024 Sheet Metals

    Lehmann, J., Keller, S., Esterl, F., Kashaev, N., Klusemann, B. & Ben Khalifa, N., 2024, Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity: ICTP 2023 - Volume 3. Mocellin, K., Bouchard, P.-O., Bigot, R. & Balan, T. (eds.). Cham: Springer International Publishing AG, Vol. 3. p. 352-362 11 p. (Lecture Notes in Mechanical Engineering).

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

  33. Published

    EFFECT OF DIFFERENT RESIDUAL STRESS ENGINEERING TECHNIQUES ON THE RESIDUAL STRESS AND FATIGUE CRACK GROWTH BEHAVIOUR IN AA7075

    Lehmann, J., Ventzke, V., Dorn, F., Knothe-Horstmann, C., Klusemann, B., Kashaev, N. & Ben Khalifa, N., 2024, European Conference on Fracture 2024: Book of Abstracts. Bozic, Z., Domazet, Z., Basan, R., Vrdoljak, M. & Andric, M. (eds.). Zagreb: University of Zagreb, p. 410-410 1 p.

    Research output: Contributions to collected editions/worksPublished abstract in conference proceedingsResearch

  34. Published

    Grain Structure Evolution Ahead of the Die During Friction Extrusion of AA2024

    Chan, C. Y. C., Suhuddin, U. F. H. R., Rath, L., Bachiega, F. L. & Klusemann, B., 2024, Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity - ICTP 2023 - Volume 3. Mocellin, K., Bouchard, P.-O., Bigot, R. & Balan, T. (eds.). Cham: Springer Science and Business Media Deutschland GmbH, p. 422-428 7 p. (Lecture Notes in Mechanical Engineering).

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

  35. Published

    Microstructure refinement by a novel friction-based processing on Mg-Zn-Ca alloy

    Chen, T., Fu, B., Shen, J., Suhuddin, U. F. H. R., Wiese, B., Dos Santos, J. F., Bergmann, J. P. & Klusemann, B., 2024, Material Forming, ESAFORM 2024: The 27th International ESAFORM Conference on Material Forming – ESAFORM 2024. Araujo, A. C., Cantarel, A., Chabert, F., Korycki, A., Olivier, P. & Schmidt, F. (eds.). Millersville, PA : Association of American Publishers, p. 2031-2040 10 p. (Materials Research Proceedings; vol. 41).

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

  36. Published

    Processability of Mg-Gd Powder via Friction Extrusion

    Rath, L., Chan, C., Suhuddin, U., Buresch, H., Ebel, T. & Klusemann, B., 2024, Proceedings of the 14th International Conference on the Technology of Plasticity - Current Trends in the Technology of Plasticity - ICTP 2023 - Volume 1. Mocellin, K., Bouchard, P.-O., Bigot, R. & Balan, T. (eds.). Springer Science and Business Media Deutschland GmbH, p. 431-441 11 p. (Lecture Notes in Mechanical Engineering).

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

  37. 2023
  38. Published

    Author Correction: Feasibility of orbital friction stir welding on clad pipes of API X65 steel and Inconel 625 (Scientific Reports, (2023), 13, 1, (10669), 10.1038/s41598-023-37913-4)

    Amavisca, C. V., Bergmann, L., de, C. R., Schroeder, J. G., Ramos, F. D., Lemos, G. V. B., Reguly, A. & Klusemann, B., 12.2023, In: Scientific Reports. 13, 1, 1 p., 11959.

    Research output: Journal contributionsOther (editorial matter etc.)Research

  39. Published

    Feasibility of orbital friction stir welding on clad pipes of API X65 steel and Inconel 625

    Amavisca, C. V., Bergmann, L., Lessa, C. R. D. L., Schroeder, J. G., Ramos, F. D., Lemos, G. V. B., Reguly, A. & Klusemann, B., 12.2023, In: Scientific Reports. 13, 1, 10 p., 10669.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  40. Published

    Friction Stir Welding of Various Aluminium Alloys to Titanium

    Grassel, S. F., Bergmann, L. & Klusemann, B., 29.11.2023, In: Key Engineering Materials. 966, p. 49-54 6 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  41. Published

    Friction surfacing of aluminum to steel: Influence of different substrate surface topographies

    Roos, A., Metternich, F., Kallien, Z., Baumann, J., Ehrich, J., Kipp, M., Hanke, S., Biermann, D. & Klusemann, B., 01.11.2023, In: Materials and Design. 235, 12 p., 112390.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  42. Published

    Microstructure evolution and texture development during production of homogeneous fine-grained aluminum wire by friction extrusion

    Suhuddin, U. F. H., Rath, L., Halak, R. M. & Klusemann, B., 01.11.2023, In: Materials Characterization. 205, 13 p., 113252.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  43. Published

    Process parameter assessment on the dissimilar deposition of AA2024-T351 on AA7475-T761 by friction surfacing

    Brandes, A. C., Roos, A., Klusemann, B., Martins, J. D. P., dos Santos, J. F. & Carvalho, A. L. M., 01.11.2023, In: Journal of Materials Research and Technology. 27, p. 7593-7605 13 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  44. Published

    Refill friction stir spot welding of thermoplastic composites: Case study on Carbon-fiber-reinforced polyphenylene sulfide

    Schäfer, H., Blaga, L. A., Stöver, E. & Klusemann, B., 01.10.2023, In: Thin-Walled Structures. 191, 111037.

    Research output: Journal contributionsJournal articlesResearch

  45. Published

    Correlation of Microstructure and Local Mechanical Properties Along Build Direction for Multi-layer Friction Surfacing of Aluminum Alloys

    Kallien, Z., Hoffmann, M., Roos, A. & Klusemann, B., 10.2023, In: JOM: Journal of The Minerals, Metals & Materials Society. 75, 10, p. 4212-4222 11 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  46. Published

    Microstructural development of as-cast AM50 during Constrained Friction Processing: grain refinement and influence of process parameters

    de Castro, C. C., Shen, J., dos Santos, J. F. & Klusemann, B., 01.09.2023, In: Journal of Materials Processing Technology. 318, 11 p., 118018.

    Research output: Journal contributionsJournal articlesResearch

  47. Published

    Rapid grain refinement and compositional homogenization in a cast binary Cu50Ni alloy achieved by friction stir processing

    Escobar, J., Gwalani, B., Silverstein, J., Ajantiwalay, T., Roach, C., Bergmann, L., dos Santos, J. F., Maawad, E., Klusemann, B. & Devaraj, A., 01.08.2023, In: Materials Characterization. 202, 10 p., 112999.

    Research output: Journal contributionsJournal articlesResearch

  48. Published

    Semi-stationary shoulder bobbin-tool: A new approach in tailoring macrostructure and mechanical properties of bobbin-tool friction stir welds in magnesium alloy

    Li, G., Chen, T., Fu, B., Shen, J., Bergmann, L., Zhou, L., Chen, K., Santos, J. F. D. & Klusemann, B., 01.08.2023, In: Journal of Materials Processing Technology. 317, 117984.

    Research output: Journal contributionsJournal articlesResearch

  49. Published

    Fatigue behaviour of multi-spot joints of 2024-T3 aluminium sheets obtained by refill Friction Stir Spot Welding with polysulfide sealant

    Bernardi, M., Suhuddin, U. F. H., Fu, B., Gerber, J. P., Bianchi, M., Ostrovsky, I., Sievers, B., Faes, K., Maawad, E., Lazzeri, L., dos Santos, J. F. & Klusemann, B., 01.07.2023, In: International Journal of Fatigue. 172, 107539.

    Research output: Journal contributionsJournal articlesResearchpeer-review

  50. Published

    Fatigue crack propagation in AA5083 structures additively manufactured via multi-layer friction surfacing

    Kallien, Z., Knothe-Horstmann, C. & Klusemann, B., 01.07.2023, In: Additive Manufacturing Letters. 6, 7 p., 100154.

    Research output: Journal contributionsComments / Debate / ReportsResearch

  51. Published

    Quasi-in-situ observation of microstructure at the friction interface: Shear deformation, dynamic recrystallization and mechanical responses during friction welding process

    Jin, F., Fu, B., Shen, J., Li, J., Li, W., Santos, J. F. D. & Klusemann, B., 01.06.2023, In: Materials Characterization. 200, 112911.

    Research output: Journal contributionsJournal articlesResearch

  52. Published

    Friction Riveting of FR4 substrates for printed circuit boards: Influence of process parameters on process temperature development and joint properties

    Rodrigues, C. F., Blaga, L. & Klusemann, B., 01.05.2023, In: Journal of Materials Research and Technology. 24, p. 4639-4649 11 p.

    Research output: Journal contributionsJournal articlesResearch

  53. Published

    On anisotropic tensile mechanical behavior of Al-Cu-Li AA2198 alloy under different ageing conditions

    Examilioti, T. N., Li, W., Kashaev, N., Ventzke, V., Klusemann, B., Tiryakioğlu, M. & Alexopoulos, N. D., 01.05.2023, In: Journal of Materials Research and Technology. 24, p. 895-908 14 p.

    Research output: Journal contributionsJournal articlesResearchpeer-review

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