INFLUENCE OF HETEROGENEOUS CRYSTALLIZATION CONDITIONS OF ALUMINUM ALLOY ON ITS PLASTIC PROPERTIES

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Authors:

Yu.V Dotsenko, Cand. Sci. (Tech.), Associate Professor, National Metallurgical Academy of Ukraine, Senior Lecturer of the Department of Casting Production, Dnipropetrovsk, Ukraine.

V.Yu. Selivorstov, Dr. Sci. (Tech.), Professor, National Metallurgical Academy of Ukraine, Professor of the Department of Casting Production, Dnipropetrovsk, Ukraine.

T.V. Selivorstova, Cand. Sci. (Tech.), Associate Professor, National Metallurgical Academy of Ukraine, Senior Lecturer of the Department of Information Technology and Systems, Dnipropetrovsk, Ukraine.

N.V. Dotsenko, National Metallurgical Academy of Ukraine, Senior Laboratory Assistant of Educational and Research Center, Dnipropetrovsk, Ukraine.

Abstract:

Purpose. Determination of the influence of gas-dynamic treatment and inoculation of the metal with TiCN ultradisperse powders on its mechanical properties and formation of porosity in shaped casting of SC51A (AK5M) alloy solidified in the chill mold during implementation of the corresponding complex technology.

Methodology. Experimental thermographic studies using HA thermocouples were held. The temperature field of the casting was plotted. For the hardware determination of the components in the alloy under study, we employed the photoelectric spectral method of elements mass fraction measurement, a method of indirect measurements. The standard procedure of Brinell hardness test was applied to the samples of the cast metal. The mechanical properties, namely tensile strength at room temperature в (MPa) and elongation (%) were determined according to the State Standard (GOST 1497-84) by means of the Tensile Strength Test Machine FM1000 with the samples of 10 mm diameter cut from the body of casting. To simulate the SC51A (AK5M) aluminum alloy shaped casting solidification process we employed the Polygon system of computer modeling of casting processes (SCM CP).

Findings. The effect of implementation of the combined technology of aluminum alloy refinement with TiCN ultrafine modifier and gas-dynamic treatment on the mechanical properties of shaped casting metal solidified in the chill has been determined.

Originality. For the first time, we suggest the possibility and define conditions of the combined action of ultrafine modifier inoculation and gas-dynamic treatment on the solidifying SC51A (AK5M) alloy.

Practical value. Technological modes of the combined action on the melt during crystallization in the “supporting tip of conveyor bar” chill mold that weighted 1.1 kg made of SC51A (AK5M) alloy have been developed.

References:

1. Smirnov, A.N., Pilushenko, V.L., Momot, S.V. and Amitan, V.N. (2002), Zatverdevaniye metallicheskogo rasplava pri vneshnikh vozdeystviyakh [Hardening of External Effect-Exposed Metal Melt], VIK, Donetsk, Ukraine.

Затвердевание металлического расплава при внешних воздействиях [Текст]/ А.Н. Смирнов, В.Л. Пилюшенко, С.В. Момот, В.Н. Амитан. - Д.: Издательство ВИК - 2002. - 169 с.

2. Kalinichenko, A.S. and Bergman, G.V. (2001), Upravlyaemoye napravlennoye zatverdevaniye i lazernaya obrabotka [Focused Controlled Hardening and Laser Treatment: Theory and Practice], Tekhnoprint, Minsk, Belorussia.

Калиниченко, А.С. Управляемое направленное затвердевание и лазерная обработка: теория и практика [Текст] / А.С. Калиниченко, Г.В. Бергман - Мн.: Технопринт, 2001. - 367 с.

3. Nemenenok, B.M. (1999), Teoriya i praktika kompleksnogo modifitsyrovaniya siluminov [Theory and Practice of Complex Modification of Silumins], Technoprint, Minsk, Belorussia.

Немененок, Б.М. Теория и практика комплексного модифицирования силуминов [Текст] / Б.М. Немененок - Мн. Технопринт, 1999. – 272 с.

4. Eldarkhanov, A.S. (1996), Protsessy kristallizatsyi v pole uprugikh voln [Crystallization in Elastic Wavefield], Metallurgia, Moscow, Russia.

Эльдарханов, А.С. Процессы кристаллизации в поле упругих волн [Текст] / А.С. Эльдарханов. – М.: Металлургия, 1996. – 256 с.

5. Skrebtsov, A.M., Dan, L.D. and Sekachev, A.O. (1996), “Cast Metal Grains Refinement Options at External Effect on Hardening Melt”, Metall i litye Ukrainy, no. 1-2, pp. 30-34.

Скребцов, А.М. О некоторых возможностях измельчения зерна металла отливки при внешнем воздействии на затвердевающий расплав [Текст] / А.М. Скребцов, Л.Д. Дан, А.О. Секачев и др. // Металл и литье Украины. 1996. - № 1-2. - С.30-34.

6. Skrebtsov, A.M., Dan, L.D. and Kilochkin, V.B. (1994), “Ingot or cast structure and settling cone formation at external action on melt surface”, Metall i litye Ukrainy, no. 7-8, pp. 5-9.

Скребцов, А.М. Формирование структуры и конуса осаждения слитка или отливки при внешнем воздействии на поверхность расплава [Текст] / Л.А. Дан, В.Б. Килочкин // Металл и литье Украины. - 1994. - №7-8. - С.5-9.

7. Selivorstov, V.Yu. (2008), “Peculiarities of Calculation of the Temperature Field Casting Alloy ACM That Hardens in Painted Cast-iron Mold”, Teoriya i praktika metallurgii, no. 5-6, pp. 32–36.

 

Селівьорстов В.Ю. Особливості розрахунку газодинамічного впливу на метал, що твердіє в кокілі [Текст] / В.Ю. Селівьорстов // Теорія і практика металургії. – 2009. - № 1-2. – С. 41 – 45.

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ISSN (print) 2071-2227,
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