Influence of High-Temperature Treatment of Melt on the Composition and Structure of Aluminum Alloy

• Autorzy: Grachev V. A. , Turakhodjaev N. D.

Identyfikatory

DOI

10.1515/afe-2017-0131

• Języki publikacji: EN

Abstrakty

EN

The aim of the current study was to examine the structure of an alloy treated at various temperatures up to 2,000–2,100 °C. Among research techniques for studying alloy structure there were the electron and optical microstructure, X-ray structure, and spectral analysis, and for studying the developed furnace geometric parameters the authors employed mathematical modeling method. The research was performed using aluminum smelting gas-fired furnaces and electric arc furnaces. The objects of the study were aluminum alloys of the brand AK7p and AK6, as well as hydrogen and aluminum oxide in the melt. For determining the hydrogen content in the aluminum alloy, the vacuum extraction method was selected. Authors have established that treatment of molten aluminum alloy in contact with carbon melt at high temperatures of 2,000–2,100 °C has resulted in facilitating reduction of hydrogen and aluminum oxide content in the melt by 40-43% and 50-58%, respectively, which is important because hydrogen and aluminum oxide adversely affect the structure and properties of the alloy. Such treatment contributes to the formation of the extremely fine-grained microstructure of aluminum alloy.

Słowa kluczowe

EN

innovative foundry technology; innovative foundry material; heat treatment; aluminum alloy structure; fine-grained microstructure; gasfired arc furnace; electric arc furnace

PL

innowacyjna technologia odlewnicza; innowacyjny materiał odlewniczy; obróbka cieplna; stop aluminium; mikrostruktura drobnoziarnista; piec łukowy elektryczny; piec łukowy gazowy

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2017
• Tom: Vol. 17, iss. 4
• Strony: 61--66
• Opis fizyczny: Bibliogr. 34 poz., rys., tab.

Twórcy

autor

Grachev V. A.

• A.N. Frumkin Institute of Physical Chemistry and Electrochemistry of the Russian Academy of Sciences, 29 Bldg 1, Bolshaya Ordynka St., Suite # 104, 119017 Moscow, Russia

autor

Turakhodjaev N. D.

• Tashkent State Technical University, Faculty of Mechanical University 2,Tashkent 100095, Republic of Uzbekistan

Bibliografia

• [1] Rasulov, S.A., Grachev, V.A. (2004). Quymakorlik Metallurgiyasi. Toshkent: O’Qituoichi.
• [2] Shazimov, A.O. (1992). USSR certificate of authorship No. 1719838. Shaft-reverberatory furnace for aluminum and aluminum alloys smelting. Moscow: State Committee for Inventions and Discoveries.
• [3] Cherny, A.A. (1992). USSR certificate of authorship No. 1735686. Shaft-reverberatory gas furnace. Moscow: State Committee for Inventions and Discoveries.
• [4] Shazimov, A.O. (1992). USSR certificate of authorship No. 1775485. Method and device for refining aluminum alloys. Moscow: State Committee for Inventions and Discoveries.
• [5] Turakhodjaev, N.D., Shazimov, A.O. & Kamolov, Zh.S. (2008). Improving the quality of aluminum alloys produced from gas furnaces. Tashkent State Technical University Bulletin. 2-3, 193-195.
• [6] Karimov, K.A., Akhmedov, A.H., Umurzakov, A.K., Abduvaliev, U.A. & Turakhodjaev, N.D. (2015). Development and analytical realization of the mathematical model of controlled motion of a positioning mechanism. European Applied Sciences. 4, 63-66.
• [7] Nurmurodov, S., Rasulov, A., Bakhadirov, K., Yakubov, L., Abdurakhmanov, Kh. & Tursunov, T. (2016). Development of new structural materials with improved mechanical properties and high quality of structures through new methods. Journal of Materials Science Research. 5(3), 52-58.
• [8] All about metallurgy. (2015, January 20). Thermomechanical processing of aluminum alloys. Retrieved December 17, 2016, from http://metal-archive.ru/obrabotka-cvetnyh-metallov/617-termomehanicheskaya-obrabotka-alyuminievyh-splavov.html.
• [9] Naidek, V.L., Narivsky, A.V. (2008). Improving the quality of aluminum and copper alloys castings by means of plasma-reagent treatment of melts. Kiev: Naukova Dumka.
• [10] Koryagin, Yu.D. & Shaburova, N.A. (2009). Multifunction processing of casting aluminum alloys in liquid and solid state. South Ural State University Bulletin, Metallurgy series. 36(169), 51-55.
• [11] Yakimov, V.I., Muravyev, V.I., Kuriniy, V.V. (2016). Improvement of the mechanical and operational properties of cast blanks. Proceedings of the Komsomolsk-na-Amure State Technical University. 1(25), 112-114.
• [12] Kruk, S.I., Sagalevich, V.M., Gorokhov, V.Yu. & Lukin, V.I. (1991). Application of gas-static treatment for improvement of the welded joints quality. Welding International. 11, 8-11.
• [13] Kablov, E.N. (2015). Innovative development of Russia: trends and guidelines. (3rd ed.). Moscow: VIAM.
• [14] Deyev, V.B., Pheoktistov, A.V., Selyanin, I.F. & Blumbakh, A.L. (2003). High-temperature treatment of Al-Si melt. Polzunovsky almanac. 4, 85-86.
• [15] Tulyaganov, E.Kh., Bragina, V.P., Tulyaganov, B.Sh. (2005). Influence of melting cast iron in a liquid-fuel furnace on the cast iron quality. In National Research and Practice Conference "Innovation of Science, Education and Production" (pp. 92-94). Tashkent, Uzbekistan.
• [16] Bazarbayev, A.I. (2005). Recovery of heat in the shaft of melting units. In 5th National Research and Practice Conference "Youth in the Development of Science and Education" (pp. 72-75). Tashkent, Uzbekistan.
• [17] Giyasov, Sh.S., Kamolov, Shzh. S. (2005). Modification of aluminum alloys. In National Research and Practice Conference "Mashinasozlik tarmoklarida talim, fan va ishlab chikarish integratsiyasi" (p. 62-65). Tashkent, Uzbekistan.
• [18] Turakhodjaev, N.D. (2016). Scientific and technical solutions for getting high qualitative structure during melting operation of aluminium alloy materials. Doctoral dissertation, Tashkent State Technical University, Tashkent, Uzbekistan.
• [19] Belgium: European Aluminium Association. (2004). Aluminium recycling: The road to high quality products. Retrieved June 20, 2005, from www.eaa.net.
• [20] Boin, U., Reuter, M.A. & Probst, T. (2004). Measuring-modelling: Understanding the Al scrap melting process inside a rotary furnace. Erzmetall. 57(5), 264-269.
• [21] Boin, U.M.J. & Bertram, M. (2005). Melting standardized aluminum scrap: A mass balance model for Europe. JOM. 57(8), 26-33.
• [22] Puga, H., Barbosa, J., Soares, D., Silva, F. & Ribeiro, S. (2009). Recycling of aluminium swarf by direct incorporation in aluminium melts. Journal of Materials Processing Technology. 209(11), 5195-5203.
• [23] Costa, S., Puga, H., Barbosa, J. & Pinto, A.M.P. (2012). The effect of Sc additions on the microstructure and age hardening behaviour of as cast Al–Sc alloys. Materials & Design. 42, 347-352.
• [24] Simonov, V.N., Vjugin, L.F., Gutov, V.A., Eremin, O.S., Zadiranov, A. N. (2000). RF Patent 2167214. Alloys smelting based on cuprum. Moscow: Federal Service on Intellectual Property.
• [25] Andreev, A.D., Gogin, V.B., Temchin, M.Z. (1988). Aluminum alloys smelting in shaft furnaces. Moscow: Metallurgiya.
• [26] Grachev, V.A., Shazimov A.O., Turakhodjaev, N.D. (1989). Advanced smelting of aluminum alloys. In National Scientific and Technical Conference "Modern technological processes of high-grade products by means of casting and powder metallurgy" (pp. 9-10). Cheboksary, Russia.
• [27] Ametistov, E.V., Grigoriev, V.A., Emtsev, B.T. et al. (1982). Heat and mass transfer. Thermotechnical experiment. Reference book. Moscow: Energoizdat.
• [28] Shazimov, A.O. (1990). Development, investigation and application of aluminum casting alloys smelting in shaft-reverberatory furnaces. Ph.D. Dissertation (Tech.), Penza State University, Penza, Russia.
• [29] Shazimov, A.O. (1992). Study of the refractory partition's influence on the heat transfer and gas content of aluminum alloys smelted in gas shaft-reverberatory furnaces. In "Metal saving in construction and casting" (pp. 110-114). Penza.
• [30] Abdullayev, F.S., Mansurov, J.N. (2005). Aluminum alloys smelting in gas-fired furnaces. In National Science and Practice Conference "Youth in Science and Education Development" (pp. 96-99). Tashkent, Uzbekistan.
• [31] Bragina, V.P., Rasulov, S.A., Normurodov, U., Mukomov, A. et al. (2014). Mathematical modeling of the charge heating. In International Science and Practice Conference "Modern High Technologies: Development Priorities and Personnel Training" (pp. 26-30). Naberezhnye Chelny, Russia.
• [32] Nikitin. K.V., Nikitin, V.I., Yakovlev, K.V. et al. (2007). Software-hardware complex for the aluminum alloys ingots’ porosity determination on the basis of the SIAMS700 analyser. Liteishchik Rossii. 2, 13-16.
• [33] Vorontsov, V.B., Gorchinsky, A.P., Yanchenko, A.P. & Ardashev, M.G. (2007). Angara-2 AE-installation for determination of hydrogen content in aluminum casting alloys. Defectoskopiya. 1, 50-55.
• [34] Danilkin, V., Grigorieva, A.A. (1990). Determination of gas inclusions in aluminum alloys. Moscow: VILS.

Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).