Impact of annealing on electrical resistivity and hardness of hot-rolled alloyed aluminum sheets with Zr content up to 0,5 wt.%
https://doi.org/10.17073/0021-3438-2016-3-48-55
Abstract
The study covers the influence of multi-stage annealing (up to 650 °C) on the value of electrical resistivity and hardness of low-alloy hot-rolled sheets made of aluminum alloys containing up to 0,5 wt.% of Zr. Experimental samples were produced in conditions close to those implemented in industrial machines for continuous casting and rolling. Testing methods including heat treatment were described. The structure of the cast (initial structure) as well as the structure of deformed experimental samples was analyzed. The graphs of the specific electrical resistivity (ρ) and hardness dependence on the temperature of the last annealing stage were drawn according to the results of the physical and mechanical tests. It was determined by computational and experimental techniques that the ρ value depends mainly on zirconium content in aluminum solid solution. The optimal ratio between zirconium content in alloy and annealing temperature providing the best combination of hardness and electrical resistivity was defined.
About the Authors
N. A. Belov
National University of Science and Technology «MISIS» (NUST «MISIS»), 119049, Russia, Moscow, Leninsky pr., 4.
Russian Federation
Russian Federation
Dr. Sci. (Eng.), professor of the Department of foundry technologies and material art working (FT&MAW),
deputy director of the Engineering Centre «Foundry technologies and materials»,
A. M. Dostaeva
Karaganda State Technical University, 100027, Resp. Kazakhstan, Karaganda, b. Mira, 56.
Kazakhstan
Kazakhstan
Ph.D., senior lecturer, Department of nanotechnology and metallurgy, Karaganda State Technical University.
P. K. Shurkin
National University of Science and Technology «MISIS» (NUST «MISIS»), 119049, Russia, Moscow, Leninsky pr., 4.
Russian Federation
Russian Federation
master’s degree student, Department of FT&MAW, NUST «MISIS».
N. O. Korotkova
National University of Science and Technology «MISIS» (NUST «MISIS»), 119049, Russia, Moscow, Leninsky pr., 4.
Russian Federation
Russian Federation
postgraduate student, Department of FT&MAW, NUST «MISIS»
A. A. Yakovlev
Russian Federation
Cand. Sci. (Eng.), section manager, the Engineering Centre «Foundry technologies and materials», NUST «MISIS».
References
1. Eentoni U.U., Eliot F.R., Boll M.D. Alyuminii. Svoistva i fizicheskoe metallovedenie [Aluminum. Properties and physical metallurgy]: Reference book under the editorship. Ed. J.E. Hatch. Moscow: Metallurgiya, 1989.
2. Belov N.A., Alabin A.N., Prohorov A.Ju. Vliyanie dobavki tsirkoniya na prochnost’ i elektrosoprotivlenie kholodnokatanykh alyuminievykh listov [Effect of additives on the strength of zirconium, and cold-rolled aluminum sheet resistivity]. Izv. vuzov. Tsvet. metallurgiya. 2009. No. 4. P.42—47.
3. Uliasz P., Knych T., Mamala A., Smyrak B. Aluminium alloys. Eds. J. Hirsch, B. Skrotzki, G. Gottstein. Weinheim: WILEY-VCH, 2008. P. 248—255.
4. Zhou W.W., Cai B., Li W.J., Liu Z.X., Yang S. Heat-resistant Al—0.2Sc—0.04Zr electrical conductor. Mater. Sci. Eng. A. 2012. No. 552. P. 353—358.
5. Belov N.A. Principles of optimising the structure of creep-resisting casting aluminium alloys using transition metals. J. Adv. Mater. 1994. No. 1 (4). P. 321—329.
6. Kenichi Sato, Kazuhisa Yamauchi, Yasumasa Hanaki. High conductive heat-resistant aluminum alloy: Pat. 4402763 (USA). 1983.
7. Vorontsova L.A. Alyuminii i alyuminievye splavy v elektrotekhnicheskikh izdeliyakh [Aluminium and aluminum alloys in electrical products]. Moscow: Energiya. 1971.
8. Booth-Morrison C., Dunand D.C., Seidman D.N. Coarsening resistance at 400 °C of precipitation-strengthened Al—Zr—Sc—Er alloys. Acta Mater. 2011. No. 59. P. 7029—7042.
9. Knipling K.E., Karnesky R.A., Lee C.P., Dunand D.C., Seidman D.N. Precipitation evolution in Al—0.1Sc, Al— 0.1Zr and Al—0.1Sc—0.1Zr (at.%) alloys during isochronal aging. Acta Mater. 2010. No. 58. P. 5184—5195.
10. Belov N.A., Alabin A.N, Prohorov A.Yu, Skvortsov N.V. Vliyanie promezhutochnogo otzhiga na elektrosoprotivlenie provoloki nizkolegirovannykh alyuminievykh splavov sistemy Al—Zr—Fe—Si [Influence of intermediate annealing on the electrical resistance of the wire low-alloy aluminum alloys of Al—Zr—Fe—Si]. Metallovedenie i termicheskaya obrabotka metallov. 2012. No. 4. P. 14—19.
11. Mondol’fo L.F. Struktura i svoistva alyuminievykh splavov [The structure and properties of aluminum alloys]. Moscow: Metallurgiya, 1979.
12. Belov N.A., Aksenov A.A., Eskin D.G. Iron in aluminum alloys: impurity and alloying element. London: Fransis and Tailor, 2002
13. Sigli C. Zirconium solubility in aluminum alloys. In: Proc. ICAA9 (Brisbane, August 2004). P. 1353-1358.
14. Lefebvre W., Danoix F., Hallem H., Forbord B., Bostel A., Marthinsen K. Precipitation kinetic of Al3(Sc,Zr) dispersoids in aluminium. J. Alloys Compd. 2009. No. 470. P. 107—110.
15. Knipling K.E., Dunand D.C., Seidman D.N. Precipitation evolution in Al—Zr and Al—Zr—Ti alloys during isothermal aging at 375—425 °C. Acta Mater. 2008. No. 56. P. 114—127.
Review
For citations:
Belov N.A., Dostaeva A.M., Shurkin P.K., Korotkova N.O., Yakovlev A.A. Impact of annealing on electrical resistivity and hardness of hot-rolled alloyed aluminum sheets with Zr content up to 0,5 wt.%. Izvestiya. Non-Ferrous Metallurgy. 2016;(3):48-55. (In Russ.) https://doi.org/10.17073/0021-3438-2016-3-48-55
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