Search Results - "Valiev R.Z."

Review on superior strength and enhanced ductility of metallic nanomaterials by Ovid'ko, I.A., Valiev, R.Z., Zhu, Y.T.

“…Nanostructured metallic materials having nanocrystalline and ultrafine-grained structures show exceptional mechanical properties, e.g. superior strength, that…”
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Grain boundaries in ultrafine grained materials processed by severe plastic deformation and related phenomena by Sauvage, X., Wilde, G., Divinski, S.V., Horita, Z., Valiev, R.Z.

“…► UFG materials produced by SPD do exhibit specific GBs defined earlier as “non-equilibrium GB”. ► Such boundaries differ from regular GBs on atomic structure…”
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Optimization of electrical conductivity and strength combination by structure design at the nanoscale in Al–Mg–Si alloys by Sauvage, X., Bobruk, E.V., Murashkin, M.Yu, Nasedkina, Y., Enikeev, N.A., Valiev, R.Z.

“…[Display omitted] The contribution of ultrafine grains and nanoscaled precipitates has been investigated in the Al–Mg–Si system to optimize the combination of…”
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Mechanical and electrical properties of an ultrafine grained Al–8.5 wt. % RE (RE = 5.4 wt.% Ce, 3.1 wt.% La) alloy processed by severe plastic deformation by Murashkin, M.Yu, Sabirov, I., Medvedev, A.E., Enikeev, N.A., Lefebvre, W., Valiev, R.Z., Sauvage, X.

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Microstructure and thermal stability of nanocrystalline Mg-Gd-Y-Zr alloy processed by high pressure torsion by Tang, Lingling, Zhao, Yonghao, Islamgaliev, R.K., Valiev, R.Z., Zhu, Y.T.

“…Fabricating bulk coarse-grain Mg alloys into nanocrystallines (NCs) via severe plastic deformation along with remaining the thermal stability of nanostructures…”
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Strength, grain refinement and solute nanostructures of an Al–Mg–Si alloy (AA6060) processed by high-pressure torsion by Sha, G., Tugcu, K., Liao, X.Z., Trimby, P.W., Murashkin, M.Y., Valiev, R.Z., Ringer, S.P.

“…The effects of high-pressure torsion (HPT) processing on an Al–Mg–Si alloy (AA6060) have been investigated comprehensively. We show that the processing…”
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On the origin of the extremely high strength of ultrafine-grained Al alloys produced by severe plastic deformation by Valiev, R.Z., Enikeev, N.A., Murashkin, M.Yu, Kazykhanov, V.U., Sauvage, X.

“…Ultrafine-grained Al alloys produced by high-pressure torsion are found to exhibit a very high strength, considerably exceeding the Hall–Petch predictions for…”
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Room-temperature-deformation-induced chemical short-range ordering in a supersaturated ultrafine-grained Al-Zn alloy by Song, Z.Z., Niu, R.M., Cui, X.Y., Bobruk, E.V., Murashkin, M., Enikeev, N.A., Valiev, R.Z., Ringer, S.P., Liao, X.Z.

“…Chemical short-range ordering is an important structural feature that would significantly affect materials properties, including mechanical properties…”
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Gradual softening of Al–Zn alloys during high-pressure torsion by Mazilkin, A.A., Straumal, B.B., Borodachenkova, M.V., Valiev, R.Z., Kogtenkova, O.A., Baretzky, B.

“…Evolution of the microstructure and mechanical properties of Al–30wt.% Zn alloy after the severe plastic deformation (SPD) by the high-pressure torsion has…”
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Grain boundary segregation induced strengthening of an ultrafine-grained austenitic stainless steel by Abramova, M.M., Enikeev, N.A., Valiev, R.Z., Etienne, A., Radiguet, B., Ivanisenko, Y., Sauvage, X.

“…The influence of grain boundary segregation on the strength of a nanostructured austenitic stainless steel was investigated. The steel was nanostructured by…”
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Grain boundary films in Al–Zn alloys after high pressure torsion by Straumal, B.B., Sauvage, X., Baretzky, B., Mazilkin, A.A., Valiev, R.Z.

“…In ultra-fine grained Al–Zn alloys after high pressure torsion Al/Al grain boundaries (GBs) completely, partially or pseudopartially wetted by Zn in the solid…”
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Enhanced strength and ductility of AZ80 Mg alloys by spray forming and ECAP by Tang, Lingling, Zhao, Yonghao, Islamgaliev, R.K., Tsao, Chi Y.A., Valiev, R.Z., Lavernia, E.J., Zhu, Y.T.

“…The relatively low strength and poor ductility of conventional AZ80 Mg alloys have been attributed to the limited number of independent slip systems, in…”
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Effect of annealing on microstructure, strength and electrical conductivity of the pre-aged and HPT-processed Al-0.4Zr alloy by Orlova, T.S., Latynina, T.A., Mavlyutov, A.M., Murashkin, M.Y., Valiev, R.Z.

“…The influence of additional low-temperature annealing on microstructure, strength and electrical сonductivity of Al-0.4Zr alloy has been studied. The alloy was…”
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Microstructure evolution and strengthening mechanisms in commercial-purity titanium subjected to equal-channel angular pressing by Dyakonov, G.S., Mironov, S., Semenova, I.P., Valiev, R.Z., Semiatin, S.L.

“…High-resolution electron backscatter diffraction (EBSD) was applied to examine grain refinement in commercial-purity titanium Grade 4 subjected to…”
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Evolution of microstructure, macrotexture and mechanical properties of commercially pure Ti during ECAP-conform processing and drawing by Gunderov, D.V., Polyakov, A.V., Semenova, I.P., Raab, G.I., Churakova, A.A., Gimaltdinova, E.I., Sabirov, I., Segurado, J., Sitdikov, V.D., Alexandrov, I.V., Enikeev, N.A., Valiev, R.Z.

“…Long-length ultrafine-grained (UFG) Ti rods are produced by equal-channel angular pressing via the conform scheme (ECAP-C) at 200°C, which is followed by…”
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Electrochemical Anisotropy of Nanostructured Titanium for Biomedical Implants by Matykina, E., Arrabal, R., Valiev, R.Z., Molina-Aldareguia, J.M., Belov, P., Sabirov, I.

“…•Electrochemical anisotropy of nanostructured Ti is revealed in Hank's solution.•Crystallographic texture affects the results of chemical surface…”
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Mechanisms of precipitation induced by large strains in the Al-Cu system by Nasedkina, Y., Sauvage, X., Bobruk, E.V., Murashkin, M. Yu, Valiev, R.Z., Enikeev, N.A.

“…The strain induced decomposition of super saturated solid solutions of Cu in Al has been experimentally investigated. A solutionized Al-Cu alloy has been…”
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Diffusive and displacive phase transitions in Ti–Fe and Ti–Co alloys under high pressure torsion by Straumal, B.B., Kilmametov, A.R., Ivanisenko, Yu, Mazilkin, A.A., Valiev, R.Z., Afonikova, N.S., Gornakova, A.S., Hahn, H.

“…The high pressure torsion (HPT) of Ti–4 wt. % Fe and Ti–4 wt. % Co alloys has been studied. Before HPT, the samples were annealed above and below the…”
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Synthesis and properties of hydroxyapatite-containing porous titania coating on ultrafine-grained titanium by micro-arc oxidation by Yao, Z.Q., Ivanisenko, Yu, Diemant, T., Caron, A., Chuvilin, A., Jiang, J.Z., Valiev, R.Z., Qi, M., Fecht, H.-J.

“…Equal channel angular pressing results in ultrafine-grained (∼200–500 nm) Ti with superior mechanical properties without harmful alloying elements, which…”
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Influence of Severe Plastic Deformation on Microstructure, Strength and Electrical Conductivity of Aged Al–0.4Zr(Wt.%) Alloy by Orlova T.S., Mavlyutov A.M., Latynina T.A., Ubyivovk E.V., Murashkin M.Yu, Schneider R., Gerthsen D., Valiev R.Z.

“…Microstructure evolution of an Al-0.4Zr(wt.%) alloy after isothermal aging (AG) and subsequent high pressure torsion (HPT) and its impact on strength and…”
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