Effect of Sr and B modification on impact strength and fracture behavior of AlSi9Mg alloy for marine applications

• Autorzy: Romankiewicz Remigiusz

Identyfikatory

DOI

10.17402/662

• Języki publikacji: EN

Abstrakty

EN

AlSi9Mg silumins are increasingly used in lightweight ship structures and onboard equipment, where resistance to impact and vibration is crucial. This study evaluates the effect of AlSr10 (0.15 and 0.30% Sr) and AlB4 (0.20% B) additions on the microstructure, impact strength and fracture behavior of the AlSi9Mg alloy. The highest improvement in impact strength—from 4.8 to 11.1 J/cm²—is achieved with 0.30% AlSr10. The lamellar eutectic β(Si) transformed into a fine fibrous morphology, reducing interphase spacing and producing a more tortuous fracture profile, which enhanced dynamic load resistance. While the AlB4 addition shortened α(Al) dendrites, it did not significantly improve impact strength (4.13 J/cm²). The results demonstrate that a properly selected Sr level enables the design of components (e.g., brackets, housings, and guards) for marine environments subjected to impact and vibration. This work provides a basis for future investigations into long-term durability of modified silumins under corrosive marine conditions and combined impact–vibration loads specific to waterborne transport.

Słowa kluczowe

EN

AlSi9Mg silumin; strontium modification; impact strength; microstructure; fracture behavior; lightweight ship structures

• Wydawca: Wydawnictwo Naukowe Politechniki Morskiej w Szczecinie
• Czasopismo: Zeszyty Naukowe Politechniki Morskiej w Szczecinie
• Rocznik: 2025
• Tom: nr 84 (156)
• Strony: 56--67
• Opis fizyczny: Bibliogr. 18 poz., rys., tab.

Twórcy

autor

Romankiewicz Remigiusz

• University of Zielona Góra, Faculty of Engineering and Technical Sciences 9 Licealna St., 65-417 Zielona Góra, Poland

• https://orcid.org/0000-0002-6341-7167

Bibliografia

• 1. Callegari, B., Lima, T.N. & Coelho, R.S. (2023) The influence of alloying elements on the microstructure and properties of Al-Si-based casting alloys. Metals 13 (7), 1174, doi: 10.3390/met13071174
• 2. Dasch, S.S. & Chen, D.A. (2023) Review on processing-microstructure-property relationships of Al-Si alloys: Recent advances in deformation behavior. Metals 13 (3), 609, doi: 10.3390/met13030609
• 3. Fracchia, E., Gobber, F.S. & Rosso, M. (2021) Effect of alloying elements on the Sr modification of Al-Si cast alloys. Metals 11, 342, doi: 10.3390/met11020342
• 4. Gan, J., Huang, Y., Wen, C. & Du, J. (2020) Effect of Sr modification on microstructure and thermal conductivity of hypoeutectic Al-Si alloys. Transactions of Nonferrous Metals Society of China 30, pp. 2879–2890, doi: 10.1016/ S1003-6326(20)65428-0
• 5. Ganesh, M.R.S., Reghunath, N., Levin, M.J., Prasad, A., Doondi, A. & Shankar, K. (2022) Strontium in Al-SiMg alloy: A review. Metals and Materials International 28, pp. 1‒40, doi: 10.1007/s12540-021-01054-y
• 6. Gucma, M., Deja, A. & Szymonowicz, J. (2023) Environmental solutions for maritime ships: Challenges and needs. Production Engineering Archives 29 (2), pp. 216–224, doi: 10.30657/pea.2023.29.25
• 7. Hren, I. & Svobodova, J. (2018) Fractographic analysis of strontium-modified Al-Si alloys. Manufacturing Technology 18 (6), pp. 900–905, doi: 10.21062/ ujep/198.2018/a/1213-2489/MT/18/6/900
• 8. Lipiński, T. (2019) Effect of Sr, Ti and B addition as powder and a preliminary alloy with Al on microstructure and tensile strength AlSi9Mg alloy. Manufacturing Technology 19 (5), pp. 807–812, doi: 10.21062/ujep/376.2019/a/1213-2489/ MT/19/5/807
• 9. Lipiński, T. (2023) Effect of modifier form on mechanical properties of hypoeutectic silumin. Materials 16 (15), 5250, doi: 10.3390/ma16155250
• 10. Lipiński, T. (2024) Microstructure and mechanical properties AlSi7Mg alloy with Sr, Al and AlSi7Mg. Manufacturing Technology 24 (2), pp. 227‒234, doi: 10.21062/ mft.2024.031
• 11. Lipiński, T. & Karpisz, D. (2020) Effect of modification time on microstructure and tensile strength AlSi9Mg alloy with Sr, Ti and B additions using in agricultural machinery. In: Engineering for Rural Development (19th International Scientific Conference, Jelgava, Latvia, 20–22 May 2020), pp. 1476–1481, doi: 10.22616/ERDev.2020.19.TF367
• 12. Lipiński, T. & Pietraszak, J. (2023) Modification of AlSi7Mg alloy with Sr and Sb. In: Engineering for Rural Development (22nd International Scientific Conference), pp. 179–184, doi: 10.22616/ERDev.2023.22.TF034
• 13. Michna, Š., Hren, I., Cais, J. & Michnová, L. (2020) The research of the different properties and production parameters having influence on deep-drawing sheets made of AlMg3 alloy. Manufacturing Technology 20 (3), pp. 347– 354, doi: 10.21062/mft.2020.035
• 14. Nikolić, R.R., Marković, S., Arsić, D., Lazić, V., Hadzima, B. & Ulewicz, R. (2021) Influence of different hard‑facing procedures on quality of surfaces of regenerated gears. Production Engineering Archives 27 (4), pp. 257– 264, doi: 10.30657/pea.2021.27.34
• 15. Rams, J. & Whittaker, M. (Eds) (2022) Light alloys and composites ‒ High temperature extreme alloys and composites. In: Encyclopedia of Materials: Metals and Alloys (Vol. 1). Elsevier
• 16. Świt, G., Dzioba, I., Ulewicz, M., Lipiec, S., Adamczak-Bugno, A. & Krampikowska, A. (2023) Experimental-numerical analysis of the fracture process in smooth and notched V specimens. Production Engineering Archives 29 (4), pp. 444–451, doi: 10.30657/pea.2023.29.49
• 17. Uludağ, M., Gurtaran, M. & Dispinar, D. (2020) The effect of bifilm and Sr modification on the mechanical properties of AlSi12Fe alloy. Archives of Foundry Engineering 20, pp. 99–104, doi: 10.24425/afe.2020.133337
• 18. Vincze, F., Tokár, M., Fegyverneki, G. & Gyarmati, G. (2020) Examination of the eutectic modifying effect of Sr on an Al-Si-Mg-Cu alloy using various technological parameters. Archives of Foundry Engineering 20 (3), pp. 79–84, doi: 10.24425/afe.2020.133334