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High strength of ultrafine-grained Al–Mg films and the relevance of the modified Hall–Petch-type relationship

Published online by Cambridge University Press:  27 August 2019

Nguyen Q. Chinh Open the ORCID record for Nguyen Q. Chinh [Opens in a new window]  and
György Sáfrán
Nguyen Q. Chinh*
Affiliation:
Department of Materials Physics, Eötvös Loránd University, 1117 Budapest, Pázmány Péter sétány 1/A, Budapest, Hungary
György Sáfrán
Affiliation:
Institute for Technical Physics and Materials Science, Centre for Energy Research, Budapest Hungarian Academy of Sciences, 1121 Budapest Konkoly-Thege út. 29-33, Budapest, Hungary
*
Address all correspondence to Nguyen Q. Chinh at chinh@metal.elte.hu
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Abstract

Composition-dependent microstructure and mechanical properties of ultrafine-grained Al and Al–Mg films fabricated by DC magnetron sputtering with the novel micro-combinatorial technique were studied by transmission electron microscopy, atomic force microscopy, and nanoindentation. It was revealed that these films have extremely high strength, enabling their potential application as protecting layers. Besides the possible practical applications, the results of the present work also confirm the validity of the modified Hall–Petch relationship for the uniform description of the strength of face-centered cubic metals and solid solution having ultrafine-grain size.

Type
Research Letters
Information
MRS Communications , Volume 9 , Issue 3 , September 2019 , pp. 1111 - 1114
Copyright
Copyright © The Author(s) 2019 

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References

1.Hall, E.O.: The deformation and ageing of mild steel: III discussion of results. Proc. Phys. Soc., London, Sect. B 64, 747 (1951).Google Scholar
2.Petch, N.J.: The cleavage strength of polycrystals. J. Iron Steel Inst. 174, 25 (1953).Google Scholar
3.Valiev, R.Z., Estrin, Y., Horita, Z., Langdon, T.G., Zehetbauer, M., and Zhu, Y.T.: Producing bulk ultrafine-grained materials by severe plastic deformation. JOM 58, 33 (2006).Google Scholar
4.Iwahashi, Y., Horita, Z., Nemoto, M., and Langdon, T.G.: An investigation of microstructural evolution during equal-channel angular pressing. Acta Mater. 45, 4733 (1997).Google Scholar
5.Valiev, R.Z.: Nanostructuring of metals by severe plastic deformation for advanced properties. Nat. Mater. 3, 511 (2004).Google Scholar
6.Zhilyaev, A.P. and Langdon, T.G.: Using high-pressure torsion for metal processing: fundamentals and applications. Prog. Mater. Sci. 53, 893 (2008).Google Scholar
7.Langdon, T.G.: Twenty-five years of ultrafine-grained materials: achieving exceptional properties through grain refinement. Acta Mater. 61, 7035 (2013).Google Scholar
8.Sáfrán, G.: Patent No. P 15 00500, Hungary (2015).Google Scholar
9.Sáfrán, G.: “One-sample concept” micro-combinatory for high throughput TEM of binary films. Ultramicroscopy 187, 50 (2018).Google Scholar
10.Pharr, G.M., Oliver, W.C., and Brotzen, F.R.: On the generality of the relationship among contact stiffness, contact area and elastic modulus during indentation. J. Mater. Res. 7, 613 (1992).Google Scholar
11.Oliver, W.C. and Pharr, G.M.: An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments. J. Mater. Res. 7, 1564 (1992).Google Scholar
12.Mondolfo, L.F.: Aluminum Alloys: Structure and Properties (Butterworths, London, 1976).Google Scholar
13.Iwahashi, Y., Horita, Z., Nemoto, M., and Langdon, T.G.: The process of grain refinement in equal-channel angular pressing. Acta Mater. 46, 3317 (1998).Google Scholar
14.Hasegawa, H., Komura, S., Utsunomiya, A., Horita, Z., Furukawa, M., Nemoto, M., and Langdon, T.G.: Thermal stability of ultrafine-grained aluminum in the presence of Mg and Zr additions. Mater. Sci. Eng. A 265, 188 (1999).Google Scholar
15.Chinh, N.Q., Gubicza, J., Kovács, Z., and Lendvai, J.: Depth-sensing indentation tests in studying plastic instabilities. J. Mater. Res. 19, 31 (2004).Google Scholar
16.Schuh, C.A. and Nieh, T.G.: A nanoindentation study of serrated flow in bulk metallic glasses. Acta Mater. 51, 87 (2003).Google Scholar
17.Chinh, N.Q., Gubicza, J., and Langdon, T.G.: Characteristics of face-centered cubic metals processed by equal-channel angular pressing. J. Mater. Sci. 42, 1594 (2007).Google Scholar
18.Gubicza, J., Chinh, N.Q., Szommer, P., Vinogradov, A., and Langdon, T.G.: Microstructural characteristics of pure gold processed by equal-channel angular pressing. Scr. Mater. 56, 947 (2007).Google Scholar
19.Vinogradov, A., Suyuki, T., Hashimoto, S., Kitagawa, K., Kuynetsov, A., and Dobatkin, S.: Structure and mechanical properties of submicrocrystalline copper produced by ECAP to very high strains. Mater. Sci. Forum 503–504, 971 (2006).Google Scholar
20.Hadzima, B., Janecek, M., Hellmig, R.J., Kutnyakova, Y., and Estrin, Y.: Microstructure and corrosion behaviour of ultrafine-grained copper. Mater. Sci. Forum 503–504, 883 (2006).Google Scholar
21.Zhilyaev, A.P., Gubicza, J., Nurislamova, G., Révész, Á, Surinnach, S., Baró, M.D., and Ungár, T.: Microstructural characterization of ultrafine-grained nickel. Phys. Status Solidi A 198, 263 (2003).Google Scholar
22.Neishi, K., Horita, Z., and Langdon, T.G.: Grain refinement of pure nickel equal-channel angular pressing. Mater. Sci. Eng. A 325, 54 (2002).Google Scholar