Superplasticity of Al-Mg-Zr Alloy

Abstract:

The microstructure and superplasticity of the thermomechanically proceeded sheets of Al - 3wt.%Mg - 0.25wt.%Zr were investigated. High density of L1₂-structured fine dispersoids of Al₃Zr metastable phase was observed by TEM analysis. Alloy demonstrated high recrystallization resistance at elevated temperature due to Al₃Zr dispersoids. The tensile tests were carried out in a temperature range of 440-500 °C and a strain rate of 1×10^-3 to 1×10^-2 s^-1. The maximum elongation to failure of 370% was observed at 480 °C at the constant strain rate values of 2×10^-3 and 5×10^-3 s^-1.

• Periodical: Defect and Diffusion Forum (Volume 385)
• Pages: 114-119
• DOI: https://doi.org/10.4028/www.scientific.net/DDF.385.114
• Online since: July 2018
• Authors: Andrey Mochugovskiy*, Anastasia V. Mikhaylovskaya, Walubita Mufalo, Vladimir K. Portnoy
• Keywords: Aluminium Alloy, Dispersoids, Recrystallization, Superplasticity

References

[1] T.G. Langdon, Achieving superplasticity in ultrafine-grained metals, Mechanics of Materials 67 (2013) 2-8, https://doi.org/10.1016/j.mechmat.2013.06.005.

DOI: 10.1016/j.mechmat.2013.06.005

[2] T. G. Nieh, J. Wadsworth, O. D. Sherby, Superplasticity in Metals and Ceramics, frst ed., Cambridge University Press, Cambridge, (1997).

[3] K. Kannan, C.H. Johnson, and C.H. Hamilton, A Study of Superplasticity in a Modified 5083 Al-Mg-Mn Alloy, Metallurgical and materials transactions A, 29A (1998) 1220, https://doi.org/10.1007/s11661-998-0248-1.

DOI: 10.1007/s11661-998-0248-1

[4] D.Y. Maeng, J.H. Lee, S.I. Hong, The effect of transition elements on the superplastic behavior of Al-Mg alloys, Materials Science and Engineering: A, 357 (2003) 188 – 195, https://doi.org/10.1016/S0921-5093(03)00160-6.

DOI: 10.1016/s0921-5093(03)00160-6

[5] R. Verma, A.K. Ghosh, S. Kim, C. Kim, Grain refinement and superplasticity in 5083 Al, Materials Science and Engineering: A 191 (1995) 143-150, https://doi.org/10.1016/0921-5093(94)09644-9.

DOI: 10.1016/0921-5093(94)09644-9

[6] T.G. Nieh and J. Wadsworth, Effects of Zr on the High Strain- Rate Superplasticity of 2124 Al, Scripta Metallurgica, 28 (1993) 1119-1124, https://doi.org/10.1016/0956-716X(93)90020-S.

DOI: 10.1016/0956-716x(93)90020-s

[7] S. Lee, A. Utsunomiya, H. Akamatsu, K. Neishi, M. Furukawa, Z. Horita, T.G. Langdon, Influence of scandium and zirconium on grain stability and superplastic ductilities in ultrafine-grained Al–Mg alloys, Acta Materialia 50 (2002).

DOI: 10.1016/s1359-6454(01)00368-8

[8] Ying Wang, Qing-lin Pan, Yan-fang Song, Chen Li, Zhi-feng Li, Qin Chen, Zhi-min Yin, Recrystallization of Al-5.8Mg-Mn-Sc-Zr alloy, Transactions of Nonferrous Metals Society of China, 23 (2013).

DOI: 10.1016/s1003-6326(13)62858-7

[9] F. Musin, R. Kaibyshev, Y. Motohashi, G. Itoh, High strain rate superplasticity in a commercial Al–Mg–Sc alloy, Scripta Materialia, 50 (2004) 511–516, https://doi.org/10.1016/j.msea.2017.01.091.

DOI: 10.1016/j.scriptamat.2003.10.021

[10] Peng Yong-yi, Yin Zhi-min, Nie Bo, Zhong Li, Effect of minor Sc and Zr on superplasticity of Al-Mg-Mn alloys, Transactions of Nonferrous Metals Society of China, 17 (2007) 744-750, https://doi.org/10.1016/S1003-6326(07)60167-8.

DOI: 10.1016/s1003-6326(07)60167-8

[11] F.C. Liu, Z.Y. Ma, and L.Q. Chen, Low-temperature superplasticity of Al–Mg–Sc alloy produced by friction stir processing, Scripta Materialia, 60 (2009) 968–971, https://doi.org/10.1016/j.scriptamat.2009.02.021.

DOI: 10.1016/j.scriptamat.2009.02.021

[12] V.K. Portnoy, D.S. Rylov, V.S. Levchenko, A.V. Mikhaylovskay, The influence of chromiumon the structure and superplasticity of Al–Mg–Mn alloys, Journal of Alloys and Compounds, 581 (2013).

DOI: 10.1016/j.jallcom.2013.07.075

[13] V. Mikhailovskaya, I. S. Golovin, A. A. Zaitseva, V. K. Portnoi, P. Dröttboom, and J. Cifre Effect of Mn and Cr Additions on Kinetics of Recrystallization and Parameters of Grain Boundary Relaxation of Al–4.9Mg Alloy, The Physics of Metals and Metallography, 114 (2013) 246 – 255,.

DOI: 10.1134/s0031918x13030125

[14] A.V. Mikhaylovskaya, O.A. YakovtsevaI, S.Golovin, A.V. Pozdniakov, V.K. Portnoy, Superplastic deformation mechanisms in fine-grained Al–Mg based alloys, Materials Science and Engineering: A 627 (2015).

DOI: 10.1016/j.msea.2014.12.099

[15] A.V. Mikhaylovskaya, V.K. Portnoy, A.G. Mochugovskiy, M.Yu. Zadorozhnyy, N.Yu. Tabachkova, I.S. Golovin, Effect of homogenisation treatment on precipitation, recrystallisationand properties of Al – 3% Mg – TM alloys (TM = Mn, Cr, Zr), Materials and Design 109 (2016).

DOI: 10.1016/j.matdes.2016.07.010

[16] A.V. Mikhaylovskaya, A.G. Mochugovskiy, A.D. Kotov, O.A. Yakovtseva, M.V. Gorshenkov, V.K. Portnoy, Superplasticity of clad aluminium alloy, Journal of Materials Processing Technology 243 (2017).

DOI: 10.1016/j.jmatprotec.2016.12.025

[17] A.V. Mikhaylovskaya, A.D. Kotov, A.V. Pozdniakov, V.K. Portnoy, A high-strength aluminium-based alloy with advanced superplasticity, Journal of Alloys and Compounds 599 (2014) 139–144, https://doi.org/10.1016/j.jallcom.2014.02.061.

DOI: 10.1016/j.jallcom.2014.02.061

[18] A.D. Kotov, A.V. Mikhaylovskaya, M.S. Kishchik, A.A. Tsarkov, S.A. Aksenov, V.K. Portnoy, Superplasticity of high-strength Al-based alloys produced by thermomechanical treatment, Journal of Alloys and Compounds 688 (2016).

DOI: 10.1016/j.jallcom.2016.07.045

[19] Z.Y.Ma, R.S. Mishra, M.W. Mahoney, R.Grimes, High strain rate superplasticity in friction stir processed Al–Mg–Zr alloy, Materials Science and Engineering: A 627 (2015) 31-41 https://doi.org/10.1016/j.msea.2014.12.099.

DOI: 10.1016/s0921-5093(02)00824-9

[20] Z.Y. Ma, R.S. Mishra, M.W. Mahoney, R. Grimes, High strain rate superplasticity in friction stir processed Al-Mg-Zr alloy, Materials Science and Engineering A351 (2003) 148-153.

DOI: 10.1016/s0921-5093(02)00824-9

[21] Z.Y. Ma, R.S. Mishra, Development of ultrafine-grained microstructure and low temperature (0.48 Tm) superplasticity in friction stir processed Al–Mg–Zr, Scripta Materialia 53 (2005) 75–80, https://doi.org/10.1016/j.scriptamat.2005.03.018.

DOI: 10.1016/j.scriptamat.2005.03.018

[22] A.V. Mikhaylovskaya, A.G. Mochugovskiy, V.S. Levchenko, N.Yu. Tabachkova, W. Mufalo, V.K. Portnoy, Precipitation behavior of L12 Al3Zr phase in Al-Mg-Zr alloy, Materials Characterization 139 (2018).

DOI: 10.1016/j.matchar.2018.02.030

[23] ZhanyingGuo, Gang Zhao, X.-Grant Chen, Effects of two-step homogenization on precipitation behavior of Al3Zr dispersoids and recrystallization resistance in 7150 aluminum alloy, Materials Characterization 102 (2015).

DOI: 10.1016/j.matchar.2015.02.016

[24] LÜ Xin-yu, GUO Er-jun, Paul Rometsch, Wang Li-juan, Effect of one-step and two-step homogenization treatments on distribution of Al3Zr dispersoids in commercial AA7150 aluminium alloy, Transactions of Nonferrous Metals Society of China 22 (2012).

DOI: 10.1016/s1003-6326(11)61512-4

[25] Anthony Rollett, F Humphreys, Gregory S. Rohrer, M. Hatherly, Recrystallization and Related Annealing Phenomena, second ed., Pergamon, Oxford, (1995).