Abstract
A new method of metal ware production in conditions of the combination of continuous casting and metal simultaneous deformation in solid-liquid state is considered in this paper. The microstructure and mechanical properties of the obtained metal products from alloy D19 are investigated. This method of continuous casting is developed for production of long-length metalwares having improved mechanical and performance properties. The processing of D19 alloy enhances the strength and ductility characteristics in the fabricated metal by using this technology. It is shown that the obtained metalwares have a fine-grained directional structure. The grain boundaries are uneven and wide and consisting of a plexus of dislocation loops and grids. This internal structure is formed immediately during the crystallization process and provides increased mechanical characteristics. After leaving the crystallizer, metalwares from D19 alloy have the following mechanical characteristics: temporary tensile strength ≈290 MPa, yield strength ≈172 MPa, Brinell hardness ≈823 MPa, relative elongation of 25%. It is established that the considered technology and implemented device allow for a short production cycle to obtain metalwares from aluminum alloys with high mechanical properties without additional processing. The disadvantages of the existing laboratory device are attributed to the presence on the surface of the workpiece of periodic traces of movement of the moving walls of the crystallizer. However, this is a defect of the device, not the technology, and it will be eliminated. The presented constructive solution is a small-sized installation that does not require large production areas. When implementing this process, there is no need for furnaces to maintain the temperature of the workpiece in the required range, for example, in accordance with the requirements of the rolling process.
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REFERENCES
Sergeeva, A.M., Lovizin, N.S., and Sosnin, A.A., Influence of combined technology of continuous casting and deformation of metals in solid-liquid state on mechanical properties of aluminum alloy D1, Materialovedenie, 2018, no. 5, pp. 18–24.
Sergeeva, A.M., Lovizin, N.S., and Sosnin, A.A., Combined technology of continuous casting of aluminum alloys with synchronous deformation of the metal, Aviats. Mater. Tekhnol., 2018, no. 2, pp. 9–16.
Sergeeva, A.M., Lovizin, N.S., Sosnin, A.A., and Odinokov, V.I., Analysis of structure and mechanical properties of metalware produced by continuous-casting technology, Perspekt. Mater., 2016, no. 4, pp. 13–18.
GOST (State Standard) 4784-97: Aluminum and Wrought Aluminum Alloys, Grades, Moscow: Izd. Standartov, 2000.
Sergeeva, A.M., Lovizin, N.S., and Sosnin, A.A., Combined technology of aluminum alloy vertical casting and simultaneous deformation, Metallurgist, 2018, vol. 62, nos. 3–4, pp. 270–274.
Herrmann, E., Handbuch des Stranggiessens, Düsseldorf: Aluminium-Verlag, 1958.
GOST (State Standard) R8.585-2001: State System for Ensuring the Uniformity of Measurements, Thermocouples, Nominal Static Characteristics of Conversion, Moscow: Izd. Standartov, 2002.
GOST (State Standard) 1497-84: Metals, Methods of Tension Test, Moscow: Izd. Standartov, 1986.
GOST (State Standard) 21073.0-75: Non-Ferrous Metals, Determination of Grain Size. General Requirements, Moscow: Izd. Standartov, 1976.
GOST (State Standard) 9012-59: Metals, Method of Brinell Hardness Measurement, Moscow: Izd. Standartov, 1960.
GOST (State Standard) 2789-73: Surface Roughness, Parameters and Characteristics, Moscow: Izd. Standartov, 1975.
Belyaev, A.I., Bochvar, O.S., Buinov, N.N., et al., Metallovedeniye alyuminiya i ego splavov: Spravochnik (Metal Science of Aluminum and Its Alloys: Handbook), Moscow: Metallurgiya, 1983.
Batyshev, A.I., Kristallizatsiya metallov i splavov pod davleniem (Crystallization of Metals and Alloys under Pressure), Moscow: Metallurgiya, 1990.
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Sergeeva, A.M., Lovizin, N.S. & Sosnin, A.A. Study of Structure and Mechanical Properties of Long-Length Metalware from D19 Alloy Produced by Continuous Casting and Deformation of Metal in Solid-Liquid State. Inorg. Mater. Appl. Res. 11, 453–457 (2020). https://doi.org/10.1134/S2075113320020343
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DOI: https://doi.org/10.1134/S2075113320020343