Email this article The influence of thermal treatment on microstructure and mechanical properties of the Si-rich Al–Mg–Si–Sc–Zr alloy
- Authors: Aryshenskiy E.V.1, Lapshov M.A.2, Konovalov S.V.3, Malkin K.A.2, Rasposienko D.Y.4, Makarov V.V.5
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Affiliations:
- Siberian State Industrial University, Novokuznetsk Academician S.P. Korolev Samara National Research University, Samara
- Academician S.P. Korolev Samara National Research University, Samara
- Siberian State Industrial University, Novokuznetsk Academician S.P. Korolev Samara National Research University, Samara
- M.N. Mikheev Institute of Metal Physics of the Ural Branch of RAS, Yekaterinburg
- Academician S.P. Korolev Samara National Research University, Samara M.N. Mikheev Institute of Metal Physics of the Ural Branch of RAS, Yekaterinburg
- Issue: No 4 (2023)
- Pages: 9-17
- Section: Articles
- URL: https://vektornaukitech.ru/jour/article/view/889
- DOI: https://doi.org/10.18323/2782-4039-2023-4-66-1
- ID: 889
Cite item
Abstract
The paper studies the Al–Mg–Si alloy that does not contain scandium and zirconium, as well as the silicon-rich Al–Mg–Si–Sc–Zr alloy. Multistage thermal treatment was carried out for the Al0.3Mg1Si0.3Sc0.15Zr alloy, which included annealing at a temperature of 440 °C for 8 h, high-temperature annealing at 500 °C for 0.5 h, and artificial aging at a temperature of 180 °C with soaking for 5 h. The Al0.3Mg1Si alloy was annealed at 550 °C for 8 h, and then artificial aging was carried out similarly to the alloy with Sc and Zr additives. To study the fine structure, transmission electron microscopy was used. In the as-cast condition and after each stage of thermal treatment, the mechanical properties of the alloys were determined. It has been found that in an alloy doped with Sc and Zr, the formation of Al3Sc particles occurs already at the stage of formation of the cast structure. During subsequent artificial aging, the supersaturated solid solution decomposes with the formation of β" (Mg5Si6) particles improving mechanical properties. It has been found that in the scandium-containing alloy, fewer β" (Mg5Si6) particles are formed, as a result of which its strength properties are slightly worse than those of the base alloy are. Moreover, these particles are larger than in an alloy that does not contain scandium. This is explained by the fact that complete quenching is impossible for an alloy with scandium additives.
About the authors
Evgeny Vladimirovich Aryshenskiy
Siberian State Industrial University, NovokuznetskAcademician S.P. Korolev Samara National Research University, Samara
Email: arishenskiy_ev@sibsiu.ru
ORCID iD: 0000-0003-3875-7749
Doctor of Sciences (Engineering), Associate Professor, senior researcher of the Laboratory of Electron Microscopy and Image Processing, leading researcher
РоссияMaksim Aleksandrovich Lapshov
Academician S.P. Korolev Samara National Research University, Samara
Author for correspondence.
Email: lapshov.m.syz@gmail.com
ORCID iD: 0000-0002-1306-4578
engineer
РоссияSergey Valeryevich Konovalov
Siberian State Industrial University, NovokuznetskAcademician S.P. Korolev Samara National Research University, Samara
Email: konovalov@sibsiu.ru
ORCID iD: 0000-0003-4809-8660
Doctor of Sciences (Engineer), Professor, Vice-rector for Science and Innovative Activities, chief researcher
РоссияKirill Aleksandrovich Malkin
Academician S.P. Korolev Samara National Research University, Samara
Email: malkin.ka@ssau.ru
laboratory assistant
РоссияDmitry Yuryevich Rasposienko
M.N. Mikheev Institute of Metal Physics of the Ural Branch of RAS, Yekaterinburg
Email: dmitrijrasp@gmail.com
ORCID iD: 0000-0002-7670-9054
PhD (Engineering), senior researcher of the Laboratory of Non-ferrous Alloys
РоссияVladimir Viktorovich Makarov
Academician S.P. Korolev Samara National Research University, SamaraM.N. Mikheev Institute of Metal Physics of the Ural Branch of RAS, Yekaterinburg
Email: makarov@imp.uran.ru
ORCID iD: 0000-0002-7306-3657
researcher of the Laboratory of Non-ferrous Alloys, junior researcher
РоссияReferences
- Edwards G.A., Stiller K., Dunlop G.L., Couper M.J. The precipitation sequence in Al–Mg–Si alloys. Acta Materialia, 1998, vol. 46, no. 11, pp. 3893–3904. doi: 10.1016/S1359-6454(98)00059-7.
- Murayama M., Hono K. Pre-precipitate clusters and precipitation processes in Al–Mg–Si alloys. Acta Materialia, 1999, vol. 47, no. 5, pp. 1537–1548. doi: 10.1016/S1359-6454(99)00033-6.
- Meyruey G., Massadier V., Lefebvre W., Perez M. Over-ageing of an Al–Mg–Si alloy with silicon excess. Materials Science and Engineering: A, 2018, vol. 730, pp. 92–105. doi: 10.1016/j.msea.2018.05.094.
- Matsuda K., Ikeno S., Terayama K., Matsui H., Sato T., Uetani Ya. Comparison of precipitates between excess Si-type and balanced-type Al–Mg–Si alloys during continuous heating. Metallurgical and materials transactions, 2005, vol. 36, no. 8, pp. 2007–2012. doi: 10.1007/s11661-005-0321-y.
- Elagin V.I., Zakharov V.V., Rostova T.D. Prospects for alloying aluminum alloys with scandium. Tsvetnye metally, 1982, no. 2, pp. 96–99.
- Dorin T., Ramajayam M., Vahid A., Langan T. Aluminium scandium alloys. Fundamentals of aluminium metallurgy, 2018, pp. 439–494. doi: 10.1016/B978-0-08-102063-0.00012-6.
- Röyset J., Ryum N. Scandium in aluminium alloys. International Materials Reviews, 2005, vol. 50, no. 1, pp. 19–44. doi: 10.1179/174328005X14311.
- Lityńska-Dobrzyńska L. Effect of heat treatment on the sequence of phases formation in Al–Mg–Si alloy with Sc and Zr additions. Archives of Metallurgy and Materials, 2006, vol. 51, no. 4, pp. 555–560.
- Mikhaylovskaya A.V., Mochugovskiy A.G., Levchenko V.S., Tabachkova N.Yu., Mufalo W., Portnoy K. Precipitation behavior of L12 Al3Zr phase in Al–Mg–Zr alloy. Materials Characterization, 2018, vol. 139, pp. 30–37. doi: 10.1016/j.matchar.2018.02.030.
- Rokhlin L.L., Bochvar N.R., Tabachkova N.Yu., Sukhanov A.V. The Effect of Scandium on Kinetics and Strengthening of Al–Mg2Si System Alloys in the Case of Ageing. Tekhnologiya legkikh splavov, 2015, no. 2, pp. 53–62. EDN: VKABCF.
- Vlach M., Smola B., Stulíková I., Očenášek V. Microstructure and mechanical properties of the AA6082 aluminium alloy with small additions of Sc and Zr. International journal of materials research, 2009, vol. 100, no. 3, pp. 420–423. doi: 10.3139/146.110022.
- Jiang Shengyu, Wang Ruihong. Grain size-dependent Mg/Si ratio effect on the microstructure and mechanical/electrical properties of Al–Mg–Si–Sc alloys. Journal of Materials Science & Technology, 2019, vol. 35, no. 7, pp. 1354–1363. doi: 10.1016/j.jmst.2019.03.011.
- Cabibbo M., Evangelista E. A TEM study of the combined effect of severe plastic deformation and (Zr),(Sc+Zr)-containing dispersoids on an Al–Mg–Si alloy. Journal of materials science, 2006, vol. 41, pp. 5329–5338. doi: 10.1007/s10853-006-0306-2.
- Gao Y.H., Kuang J., Zhang Jinyu, Liu G., Sun J. Tailoring precipitation strategy to optimize microstructural evolution, aging hardening and creep resistance in an Al–Cu–Sc alloy by isochronal aging. Materials Science and Engineering: A, 2020, vol. 795, article number 139943. doi: 10.1016/j.msea.2020.139943.
- Aryshenskii E., Lapshov M., Hirsh J., Konovalov S., Bazhenov V., Drits A., Zaitsev D. Influence of the small Sc and Zr additions on the as-cast microstructure of Al–Mg–Si alloys with excess silicon. Metals, 2021, vol. 11, no. 11, article number 1797. doi: 10.3390/met11111797.
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