EFFECT OF CRYSTALLIZATION CONDITIONS ON STRUCTURE AND MODIFYING ABILITY OF Al–Sc ALLOYS
https://doi.org/10.17073/0021-3438-2016-6-55-64
Abstract
The study covers the impact of thermo-time processing and cooling rate of molten metal on the crystallization regularities, structure, properties and modifying ability of Al–Sc alloys. The Al–Sc alloys obtained by electrolysis in the KF–NaF–AlF3–Sc2O3 melts at 820–850 °C were used as an initial charge for casting. It was found that changes in overheat values and casting temperatures make it possible to vary the shape, number and size of crystals in a wide range. The modifying effect of the cast and fast-quenched master alloys and alloy produced by electrolysis was tested on Al–4,5%Cu alloys. The greatest refinement of the Al–4,5%Cu–0,4%Sc alloy structure was obtained with the fast-quenched master alloy.
About the Authors
O. Yu. Tkacheva
Institute of High-Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences (IHTE UrB RAS)
Russian Federation
Dr. Sci. (Chem.), Leading Research Scientist
Russian Federation
Dr. Sci. (Chem.), Leading Research Scientist
I. G. Brodova
Institute of Metal Physics of the Ural Branch of the Russian Academy of Science named by M.N. Mikheev
Russian Federation
Dr. Sci. (Eng.), Chief Research Scientist
Russian Federation
Dr. Sci. (Eng.), Chief Research Scientist
P. A. Arkhipov
Institute of High-Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences (IHTE UrB RAS)
Russian Federation
PhD, Senior Researcher
Russian Federation
PhD, Senior Researcher
Yu. P. Zaikov
Institute of High-Temperature Electrochemistry of the Ural Branch of the Russian Academy of Sciences (IHTE UrB RAS)
UrFU
Russian Federation
Dr. Sci. (Chem.), Prof., Research Supervisor of IHTE UrB RAS, Head of Department «Technology of electrochemical productions», UrFU
Russian Federation
Dr. Sci. (Chem.), Prof., Research Supervisor of IHTE UrB RAS, Head of Department «Technology of electrochemical productions», UrFU
References
1. Elagin V.I., Zakharov V.V., Rostova T.D. Perspectivy legirovaniya aluminievych splavov scandiem [Prospects of alloying aluminum alloy with scandium]. Tzvet. metally. 1983. No. 12. P. 96—99.
2. Elagin V.I., Zakharov V.V., Filatov Yu.A. Nekotorye metal-lovedcheskie prinzipy legirovaniya, technologii proizvodstva i termicheskoi obrabotki aluminievyh splavov, legirovannyh scandiem [Some material science principles of alloying, production technology and heat treatment of aluminum alloys doped with scandium]. Technologiya leg-kih splavov. 1989. No. 9. P. 27—34.
3. Filatov Yu.A. Deformiruemye splavy na osnove sistemy Al—Mg—Sc [Strained alloys based on the Al—Mg—Sc system]. Metallovedenie i termicheskaja obrabotka metallov. 1996. No. 6. P. 33—36.
4. Zakharov V.V., Rostova T.D. Vysokoprochnui svarivaemyi splav 1970 na osnove systemy Al—Zn—Mg [High-strength weldable alloy 1970 on the basis of the Al—Zn— Mg system]. Metallovedenie i termicheskaja obrabotka metallov. 2005. No. 4. P. 10—17.
5. Elagin V.I., Zakharov. V.V, Filatov Yu.A., Rostov T.D. Razrabotka perspektivnuh aluminievyh splavov, legirovannyh scandiem [Developing advanced aluminum alloys doped with scandium]. In: Perspektivnye tehnologii legkih i special’nyh splavov [Advanced technologies of light and special alloys]. Moscow: Fizmatlit, 2006. P. 181—193.
6. Zakharov V.V. Vliyanie scandia na structuru i svoystva aluminievyh splavov [Effect of scandium on structure and properties of aluminum alloys]. Metallovedenie i termicheskaja obrabotka metallov. 2003. No. 7. P. 7—14.
7. Napalkov V.I., Makhov S.V., Popov D.A. Proizvodstvo ligatur dlya aluminievyh splavov [Production of master alloys for aluminum alloys]. Metallovedenie i termicheskaja obrabotka metallov. 2011. No. 10. P. 18—24.
8. Brodova I.G., Popel P.S., Barbin N.M., Vatolin N.A. Ishodnye rasplavy kak osnova formirovaniya struktury I svoystv aluminievyh splavov [Initial melt as the basis for formation of structure and properties of aluminum alloys]. Ekaterinburg: Ural Branch of Russian Academy of Sciences, 2005.
9. Nikitin V.I., Nikitin K.V. Nasledstvennost’ v lityh splavah. [Heredity in cast alloys.]. Moscow: Mashinostroenie-1, 2005.
10. Brodova I.G., Polenz I.V., Esin V.O., Lobov E.M. Zakonomernisti formirovaniya litoi structury pereohlazhdennyh Al—Ti splavov [Regularities of formation of the cast structure of supercooled Al—Ti alloys]. Fizika metallov i metallovedenie. 1992. No. 1. P. 84—89.
11. Brodova I.G., Polenz I.V., Popel P.S. Rol’ structury ligaturnyh splavov pri modifitzirovanii aluminievyh splavov zirkoniem [A contribution of master alloys structure during modification of aluminum alloys with zirconium]. Fizika metallov i metallovedenie. 1993. Vol. 76. No. 5. P. 123—131.
12. Golubev S.V., Korzhavina O.A., Popel P.C., Kononenko V.I., Brodova I.G., Polenz I.V., Shubin T.B. Vliyanie vyaskosti i electrosoprotivleniya na structurnoe sostoyanie rasplavov Al—Sc i stroenie litogo metalla [Effects of viscosity and electrical resistivity on the structural state of Al—Sc melts and structure of cast metal]. Metally. 1991. No. 1. P. 46—51.
13. Shtefanyuk Yu., Mann V., Pingin V., Vinogradov D., Zaikov Yu., Tkacheva O., Nikolaev A., Suzdaltsev A. Production of Al—Sc alloy by electrolysis of cryolite-scandium oxide melts. Light Metals. 2015. P. 589—593.
14. Zakharov V.V. Kinetika raspada tverdogo rastvora scan-diya v aluminii v dvoinyh splavah Al—Sc [Decomposition kinetics of solid solution of scandium in aluminum in binary alloys Al—Sc]. Metallovedenie i termicheskaja obrabotka metallov. 2015. No. 7. P. 44—48.
15. Zakharov V.V. Osobennosti kristallizatzii aluminievyh splavov, legirovannyh scandiem [Crystallisation features of aluminum alloys doped with scandium]. Metallovedenie i termicheskaja obrabotka metallov. 2011. No. 9. P. 12—18.
Review
For citations:
Tkacheva O.Yu., Brodova I.G., Arkhipov P.A., Zaikov Yu.P. EFFECT OF CRYSTALLIZATION CONDITIONS ON STRUCTURE AND MODIFYING ABILITY OF Al–Sc ALLOYS. Izvestiya. Non-Ferrous Metallurgy. 2016;(6):55-64. (In Russ.) https://doi.org/10.17073/0021-3438-2016-6-55-64
Views:
813
Email this article 