Dr. Nikolaos Rigas

Gruppenleiter Blech- und Massivumformung

E-Mail: nikolaos.rigas@fau.de

Sprechzeiten

Raum 0.040,

Mitarbeiterprofil

Projekte

Herstellung beanspruchungsangepasster Aluminiumbauteile durch Steuerung der lokalen Abkühlraten im Rahmen eines kombinierten Umform-, Abschreck- und Aushärteprozesses (Tailor Quenched Forming)
Strahlbasierte Strategien zur Herstellung von eigenschaftsoptimierten Tailor Heat Treated Blanks
Zielgerichtete Entwicklung eines Schmierstoffes für die nicht-isotherme Warmumformung hochfester Aluminiumlegierungen

Veröffentlichungen

Lypchanskyi O., Rigas N., Rogal Ł., Rybakowski JK., Litynska-Dobrzynska L., Korpała G., Lampke T., Merklein M., Prahl U.:
Strain-induced microstructural and precipitation behavior of Al-Mg-Si-Mn alloys: Effects of Si content under controlled thermomechanical conditions
In: Journal of Materials Science & Technology (2026)
ISSN: 1005-0302
DOI: 10.1016/j.jmst.2026.01.016

Idrees MS., He F., Rigas N., Brosius A., Merklein M., Rausch MH., Fröba AP.:
Accurate determination of the interfacial heat transfer coefficient during hot stamping
In: Experimental Heat Transfer (2025)
ISSN: 0891-6152
DOI: 10.1080/08916152.2025.2578537
Rigas N.:
Erarbeitung eines Prozessverständnisses für die thermisch gestützte Herstellung funktionsangepasster Aluminiumbauteile (Dissertation, 2025)
DOI: 10.25593/978-3-96147-835-4
Rigas N., Zieroth H., Karpstein N., Spiecker E., Merklein M.:
Ultrasound-assisted in-situ characterization of precipitation kinetics for tailoring mechanical properties in high-strength aluminum components
In: Journal of Materials Processing Technology 346 (2025), Art.Nr.: 119107
ISSN: 0924-0136
DOI: 10.1016/j.jmatprotec.2025.119107

Rigas N., Lypchanskyi O., Prahl U., Merklein M.:
Ultrasound-assisted material characterization: An innovative method for the non-destructive in-situ detection of microstructural changes of high-strength aluminum alloys
In: Journal of Materials Processing Technology 325 (2024), S. 1-12
ISSN: 0924-0136
DOI: 10.1016/j.jmatprotec.2023.118282
URL: https://www.sciencedirect.com/science/article/pii/S0924013623004272?ssrnid=4598800&dgcid=SSRN_redirect_SD
Rigas N., Merklein M.:
Development of a novel forming tool for the production of high-strength aluminum components with tailored properties
In: IOP Conference Series: Materials Science and Engineering 1307 (2024), S. 012020
ISSN: 1757-8981
DOI: 10.1088/1757-899X/1307/1/012020

Hafenecker J., Rigas N., Merklein M.:
Laser-based ultrasonic measurement of the influence of PBF-LB/M-typical thermal cycles on sheet metal components of hybrid parts
In: Production Engineering 63 (2023)
ISSN: 0944-6524
DOI: 10.1007/s11740-023-01210-w
Lypchanskyi O., Rigas N., Korpala G., Merklein M., Prahl U.:
Ex-situ and in-situ investigations of the microstructural evolution of AA6082 aluminum alloy during heat treatment
In: Materials Science and Engineering A-Structural Materials Properties Microstructure and Processing (2023), Art.Nr.: 144828
ISSN: 0921-5093
DOI: 10.1016/j.msea.2023.144828
URL: https://www.sciencedirect.com/science/article/abs/pii/S0921509323002526?via=ihub
Rigas N., Garcin T., Kuball CM., Merklein M.:
Development of a novel in-situ measurement method for thermo-mechanically coupled material characterization of high-strength aluminum alloys
In: IOP Conference Series: Materials Science and Engineering (2023), S. 012042
ISSN: 1757-8981
DOI: 10.1088/1757-899X/1284/1/012042
Rigas N., Merklein M.:
Characterization of the Tribological Behavior of Different Tool Coatings and Dry Lubricant for High-Strength Aluminum Alloys at Elevated Temperatures
In: Advanced Engineering Materials (2023), S. 1-12
ISSN: 1438-1656
DOI: 10.1002/adem.202201650

Rigas N., Junker F., Berendt E., Merklein M.:
Tribological Behavior of High-Strength Aluminum Alloys in Combination with Dry Lubricants at High Forming Temperatures
In: Defect and Diffusion Forum 414 (2022), S. 125-130
ISSN: 1012-0386
DOI: 10.4028/p-27w89a
URL: https://www.scientific.net/DDF.414.125
Rigas N., Jäckisch M., Merklein M.:
Effect of elevated tool temperatures on the properties of high-strength aluminum alloys during tailor quench forming (TQF)
In: Proceedings of the Institution of Mechanical Engineers, Part B: Journal of Engineering Manufacture Volume 0 (2022), S. 1-10
ISSN: 0954-4054
DOI: 10.1177/09544054221135114

Rigas N., Merklein M.:
Numerical and experimental investigations for distortion-reduced laser heat treatment of aluminum
In: Production Engineering (2021)
ISSN: 0944-6524
DOI: 10.1007/s11740-021-01029-3
Rigas N., Schmid H., Merklein M.:
Comparison of different forming methods on deep drawing and springback behavior of high-strength aluminum alloys
40th International Deep-Drawing Research Group Conference (IDDRG) (ELECTR NETWORK)
In: INTERNATIONAL DEEP-DRAWING RESEARCH GROUP CONFERENCE (IDDRG 2021), BRISTOL: 2021
DOI: 10.1088/1757-899X/1157/1/012048

Rigas N., Merklein M.:
Experimental investigation of distortion behavior of laser heat treated blanks
11th CIRP Conference on Photonic Technologies, LANE 2020 (, 7. September 2020 - 10. September 2020)
In: M. Schmidt, F. Vollertsen, E. Govekar (Hrsg.): Procedia CIRP 2020
DOI: 10.1016/j.procir.2020.09.074

Rigas N., Degner J., Berendt E., Junker F., Merklein M.:
Characterisation of new lubrication systems for hot forming of high strength aluminum alloys
OP Conference Series, Materials Science and Engineering
In: OP Conference Series, Materials Science and Engineering 2019
DOI: 10.1088/1757-899x/651/1/012013
Rigas N., Junker F., Berendt E., Merklein M.:
Investigation of dry lubrication systems for lightweight materials in hot forming processes.
Wissenschaftliche Gesellschaft für Produktionstechnik (Hamburg, 30. September 2019 - 2. Oktober 2019)
In: Wulfsberg J, Hintze W, Behrens BA (Hrsg.): Produktion im Grenzbereich – Vorsprung halten, Zukunft sichern, Berlin, Heidelberg: 2019
DOI: 10.1007/978-3-662-60417-5_4