Degradation of the layered structure of a Cu / Ta composite during high-pressure torsion

Experiments were carried out to subject a seven-layer copper and tantalum composite to high-pressure torsion. The method of scanning electron microscopy was applied to study morphology changes of layered structure as strain increased. By means of structural analysis of images of the composite cross section, it was possible to assess homogeneity of “mixing” of Cu and Ta layer fragments. The different strain hardening rate of the Cu / Ta composite compared to the previously published data is discussed on the basis of pressure distribution features in thin samples. The use of “unconstrained” type anvils for the high-pressure torsion method allows for intensifying the hardening process of the composite material. The observed value of microhardness increase per unit of conventional strain is notably higher than in case of the “constrained” configuration.

Effect of deformation temperature on the structural parameters, phase composition and microhardness of Fe-28Mn-2.7Al-1.3C steel single crystals processed by high-pressure torsion

E. Melnikov, E. Astafurova, G. Maier

Effect of HPT straining and further natural aging on the structure and hardness of aluminum alloy 1965 with nanosized TM aluminides

M.V. Markushev, E.V. Avtokratova, S.V. Krymskiy, V.V. Tereshkin, O.S. Sitdikov

Antibacterial nanospike surface obtained by high-fluence Ar+ bombardment of nanostructured titanium

R.R. Mulyukov, R.K. Khisamov, A.M. Borisov, A.K. Baimiev, M.A. Ovchinnikov, R.R. Timiryaev, A.A. Vladimirova

Grain refining of a Ti-6Al-4V alloy by high-pressure torsion and low temperature superplasticity

J. Fu, H. Ding, Y. Huang, P.H.R. Pereira, W. Zhang, T.G. Langdon

Mechanical properties of Al-Nb in situ metal-matrix composites fabricated by constrained high pressure torsion at 10 GPa and subsequent annealing

K.S. Nazarov, G.F. Korznikova, R.K. Khisamov, R.R. Timiryaev, E.A. Korznikova, G.R. Khalikova, R.U. Shayakhmetov, S.N. Sergeyev, R.R. Kabirov, R.R. Mulyukov

Effect of severe plastic deformation on martensitic transformations in a metastable austenitic steel

G.V. Klevtsov, R.Z. Valiev, N.A. Klevtsova, N.A. Enikeev, I.N. Pigaleva, M.M. Abramova, O.A. Frolova

Effect of high-pressure torsion on mechanical properties and in vitro biocompatibility of pure Zn

N.S. Martynenko, N.Y. Anisimova, N.Y. Tabachkova, V.N. Serebryany, O.V. Rybalchenko, A.V. Sannikov, D.R. Temralieva, E.A. Lukyanova, E.A. Kornjushenkov, M.V. Kiselevskiy, S.V. Dobatkin

Dependence of α-phase particle morphology in aged metastable β Ti-15Mo alloy on the shear deformation degree

V.V. Polyakova, S.A. Gatina, A.G. Stotskiy, A.V. Polyakov, I.P. Semenova

Variation in the yield point of differentially quenched rails at severe plastic deformation

A.A. Yuriev, A.M. Glezer, V.E. Gromov, V.E. Kormyshev, Y.F. Ivanov, A.P. Semin

1. Ministry of Science and Higher Education of the Russian Federation - 122021000032-5