FEATURES OF DESTRUCTION AT TENSILE TESTING OF THE Zr-BASED BULK AMORPHOUS ALLOY SUBJECTED HPT

D. Gunderov1,2,3, E. Boltynuk3, E. Ubyivovk3, A. Churakova1,2,3, A. Lukyanov1,4, A.G. Raab1, D. Khasanova1, A. Churyumov5
1Ufa State Aviation Technical University, 12 K. Marx str., Ufa 450008 Russia
2Institute of Molecule and Crystal Physics, Ufa Research Center RAS, 151 pr. Oktyabrya, Ufa 450075 Russia
3Saint Petersburg State University, 28 Universitetskiy pr., Saint Petersburg 198504 Russia
4M.N. Mikheev Institute of Metal Physics IMP UB RAS, 620990, Ekaterinburg, 18 S. Kovalevskoy str.
5Nantional University of Science and Technology“MISiS”, Moscow 119049 Russia, 4 Leninskiy pr.
Abstract
The microstructure and mechanical properties of the Zr62Cu22Al10Fe5Dy1 amorphous alloy processed by high-pressure torsion at temperatures of 20° and 150°С were investigated. Study by transmission electron microscopy and XRD did not reveal any structural transformations. The samples of the amorphous alloy, prior to and after processing by HPT, fracture in a brittle manner during tensile testing at different temperatures, including 300°С. In the initial amorphous state, the maximum fracture stress is 1410 MPa. During testing of the samples after HPT processing, the samples fracture under different stress values. Fractography after tests on samples of stretching before and after HPT differs. On the surface, the destruction of the original break BMG observed close to the "patching" with large deep ridges separation. The average distance between the crests of such separation is about 5 microns. The area between the crests of separation is preferably not noticeable relief, rounded, cup-shaped. The BMG subjected to HPT n=5 at T=20°C, the area of separation between the large ridges have an internal relief, i.e., the area between the crests of separation is further fragmented "secondary" crests separation. Drops, which were formed in the tops of the ridges in the process of separation of local heating on the surface of fracture BMG «HPT 20°C» have become more dispersed. It can be assumed that it shows an increase of local plastic deformation in the fracture. Thus, a preliminary HPT processing evidently changes the structural evolution during a subsequent crystallization annealing.
Received: 29 September 2016   Revised: 02 November 2016   Accepted: 29 September 2016
Views: 71   Downloads: 29
References
1.
Inoue, Stabilization of metallic supercooled liquid and bulk amorphous alloys Acta Mater. 48, 279 (2000).
2.
A. L. Greer. Metallic glasses. Science. 267, 1947 – 1947 (1995).
3.
V. Yu. Zadorozhnyy, A. Inoue, D. V. Louzguine-Luzgin. Mater. Sci. Eng. A. 551, 82 – 86 (2012).
4.
R. Z. Valiev. Nature Materials. 3, 511 – 516 (2004).
5.
R. Z. Valiev, A. P. Zhilyaev, T. G. Langdon, Bulk Nanostructured Materials: Fundamentals and Applications, by John Wiley & Sons, Inc., 456 (2014).
6.
R. Z. Valiev, M. J. Zehetbauer, Yu. Estrin et al. Adv. Eng. Mater. 9 (7), 527 – 533 (2007).
7.
R. Valiev, R. Islamgaliev, I. Alexandrov. Prog. Mat. Sci. 45, 103 – 189 (2000).
8.
A. A. Churakova, D. V. Gunderov, A. V. Lukyanov, Yu. A. Lebedev. Letters on materials. 3 (2),166 – 168 (2013). (in Russian) [А. А. Чуракова, Д. В. Гундеров, А. В. Лукьянов, Ю. А. Лебедев. Письма о материалах. 3, 166 – 168 (2013)]
9.
A. G. Popov, V. S. Gaviko, N. N. Shchegoleva, T. Z. Puzanova, A. S. Ermolenko, V. V. Stolyarov, D. V. Gunderov, G. I. Raab, R. Z. Valiev. The Physics of Metals and Metallography. 94 (1), (2002).
10.
V. V. Stolyarov, D. V. Gunderov, R. Z. Valiev, A. G. Popov, V. S. Gaviko, A. S. Ermolenko. JMMM.196 – 197, 166 – 168 (1999).
11.
A. V. Sergueeva, C. Song, R. Z. Valiev, A. K. Mukherjee. Mater. Sci. Eng. A.339 (1), 159 – 165 (2003).
12.
D. Gunderov, A. Lukyanov, E. Prokofiev, A. Kilmametov, V. Pushin, R. Valiev. Materials Science and Engineering A. 503, 75 – 77 (2009).
13.
D. V. Gunderov, A. V. Lukyanov, E. A. Prokofev, R. Z. Valiev, N. N. Kuranova, A. N. Uksusnikov, L. I. Yurchenko, V. G. Pushin. The Physics of Metals and Metallography. 108 (2), 131 – 138 (2009). (in Russian) [Гундеров Д. В., Куранова Н. Н., Лукьянов А. В., Уксусников А. Н., Прокофьев Е. А., Юрченко Л. И., Валиев Р. З., Пушин В. Г. Физика металлов и металловедение.108 (2), 139 – 146 (2009)].
14.
D. Gunderov, N. Kuranova, A. Lukyanov, V. Makarov, E. Prokofiev, A. Pushin. Rev. Adv. Mater.Sci. 25, 58 – 66 (2010)
15.
R. Z. Valiev, D. V. Gunderov, A. V. Lukyanov, V. G. Pushin. Journal of Materials Science. 47 (22), 7848 (2012).
16.
N. N. Kuranova, V. V. Makarov, V. G. Pushin, A. N. Uksusnikov, R. Z. Valiev, D. V. Gunderov, A. V. Lukyanov, E. A. Prokofev. Bulletin of the Russian Academy of Sciences: Physics. 73 (8), 1117 – 1119 (2009).
17.
A. M. Glezer, M. P. Plotnikova, A. V. Shalimova, S. V. Dobatkin. Bulletin of the Russian Academy of Sciences: Physics. 73 (9), 1233 – 1239 (2009).
18.
R. Z. Valiev, D. V. Gunderov, V. G. Pushin, A. G. Popov. Doklady Physics. 49 (9), 519 – 521 (2004). (in Russian) [Р. З. Валиев, В. Г. Пушин, Д. В. Гундеров, А. Г. Попов. Докл. РАН. 398 (1), 54 (2004)].
19.
Li Hailing, Li Lou, Fuchen Hou, Defeng Guo, Wei Li, Xiaohong Li, D. V. Gunderov, Kiminori Sato, Xiangyi Zhang. 103, 142406 (2013)
20.
D. V. Gunderov, V. Yu. Slesarenko, A. V. Lukyanov, A. A. Churakova, E. V. Boltynjuk, V. G. Pushin, E. V. Ubyivovk, A. V. Shelyakov, R. Z. Valiev. Advanced Engineering Materials. 17 (12), 1728 – 1732 (2015).
21.
D. V. Gunderov, V. Yu. Slesarenko, A. A. Churakova, А. V. Lukyanov, E. P. Soshnikova, V. G. Pushin, R. Z. Valiev. Intermetallics. 66, 77 – 81 (2015). doi:10.1016 / j.intermet.2015.06.013
22.
E. I. Teitel, L. S. Metlov, D. V. Gunderov, A. V. Korznikov. The Physics of Metals and Metallography. 113 (12), 1162 – 1168 (2012). (in Russian) [И. Тейтель, Л. С. Метлов, Д. В. Гундеров, А. В. Физика металлов и металловедение. 113 (12), 1230 (2012)].
23.
V. Yu. Slesarenko, D. V. Gunderov, P. G. Ulyanov, R. Z. Valiev. IOP Conf. Series: Materials Science and Engineering. 63, 012166 (2014). doi:10.1088 / 1757-899X / 63 / 1 / 012166
24.
E. V. Boltynjuk, D. V. Gunderov, E. V. Ubyivovk, A. V. Lukianov, A. M. Kshumanev, A. Bednarz, R. Z. Valiev. STRANN AIP Conf. Proc. 1748, 030006 – 1 — 030006 – 6 (2016). doi: 10.1063 / 1.4954352
25.
A. Yu. Churyumov, A. I. Bazlov, A. A. Tsarkov, A. N. Solonin, D. V. Louzguine-Luzgin, J. Alloys Comp. 654, 87 – 94 (2016).