Microalloying of Continuous Cast Aluminum Strip and Structural Modification Using Plastic Treatment to a 9 μm Foil (Patent no. 39762, P-377/76)

• Autorzy: Purenović M. M. , Purenović Jelena M. , Baralić J. Č.

Identyfikatory

DOI

10.24425/amm.2023.141511

• Języki publikacji: EN

Abstrakty

EN

Innovative procedure of microalloying continuous cast aluminum strip, thickness 10 mm, by Be, Zr and Mn using 3C Pechiney technology (no. 39762, P-377/76), and modifying the existing parameters for strip casting and crystallization was implemented under industrial conditions with two randomly selected batches 2×8 tones, without previous selection of standardized quality of aluminum, purity Al 99.5%, obtained by electrolysis. The application of microalloying and overall structural modification of the technology resulted in obtaining nanoscale, ultra-thin, compact oxide high-gloss film with uniform surface of continuous cast strip, instead of the usual thick and porous oxide film. The outcome of microalloying the obtained equiaxed fine-grained nano/micro structure was avoiding anisotropic and dendritic microstructure of the strip, and improving deformation and plastic properties of modified continuous cast strip subjected to the technology of plastic treatment by rolling until the desired foil thickness of 9 μm was obtained. The invention of microalloying and structural modification, including multiplying effect of several components, directly or indirectly, changed numerous structurally-sensitive properties. The obtained nano/micro structure of crystal grains with equiaxed structure resulted in the synergy of undesirable <111> and inevitable <100> and <110> textures. Numerous properties were significantly enhanced: elastic modulus was improved, and intensive presence of cracks in warm forming condition was prevented due to rapid increase of the number of grains to 10000 grains/cm² in as-cast state.

Słowa kluczowe

EN

microalloying; modified continuous cast aluminum strip; nano oxide film; corrosion stability; plasticity; superplasticity; equiaxed structure; strain hardening; surface tension; crystallization zone; dendrites; crystal twinning

• Wydawca: Institute of Metallurgy and Materials Science of Polish Academy of Sciences ; Committee of Materials Engineering and Metallurgy of Polish Academy of Sciences
• Czasopismo: Archives of Metallurgy and Materials
• Rocznik: 2023
• Tom: Vol. 68, iss. 1
• Strony: 345--357
• Opis fizyczny: Bibliogr. 6 poz., fot., rys., tab., wykr., wzory

Twórcy

autor

Purenović M. M.

• University of Niš, Faculty of Sciences and Mathematics, Serbian Academy of Inventors and Scientists, Serbia

autor

Purenović Jelena M.

• University of Kragujevac, Faculty of Technical Sciences Cacak, Department of Physics and Materials, Serbia

autor

Baralić J. Č.

• University of Kragujevac, Faculty of Technical Sciences Cacak, Department of Physics and Materials, Serbia

Bibliografia

• [1] B.B. Gulaev, Fiziko-himičeskie osnovi sinteza splavov, Lenjingrad (1980).
• [2] L.A. Koledov, P.P. Arsentev, Metaličeski rasplavi i ih svoistva, Moskva (1976).
• [3] M.M. Purenović Yu-P-377/76 Federal Patent Office of ex Yougoslavia.
• [4] B. Radonjić, III International conference on plasticity and resistance to metal deformation, Igalo (1982).
• [5] V.I. Elagin, Legirovanie deformiruemih aluminijevih splavah perehodnim metalima, Moskva, (1975).
• [6] M. Purenović, Influence of some microalloying additives and impurities on electrochemical behavior of aluminum-oxide layer-electrolyte system (Al-Al2O3-medium), doctoral dissertation, 1978

Uwagi

1. This research is a part of investigations performed within the scope of the project 451-03-68/2022-14/200132. The authors gratefully acknowledge the financial support of Serbian Ministry of Education, Science and Technological Development.

2. Opracowanie rekordu ze środków MEiN, umowa nr SONP/SP/546092/2022 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2022-2023).