Search Results - "Valiev, R Z"

Nanostructured Al and Cu alloys with superior strength and electrical conductivity by Murashkin, M. Yu, Sabirov, I, Sauvage, X, Valiev, R. Z

“…Mechanical strength and electrical conductivity are the most important properties of conducting metallic materials used in electrical engineering. Today, there…”
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Microstructures and mechanical properties of ultrafine grained 7075 Al alloy processed by ECAP and their evolutions during annealing by Zhao, Y.H., Liao, X.Z., Jin, Z., Valiev, R.Z., Zhu, Y.T.

“…Microstructures and mechanical properties of equal-channel angular pressing (ECAP) processed and naturally aged ultrafine grained (UFG) and coarse grained (CG)…”
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Influence of microstructure on thermal stability of ultrafine-grained Cu processed by equal channel angular pressing by Liang, Ningning, Zhao, Yonghao, Li, Y., Topping, T., Zhu, Yuntian, Valiev, R. Z., Lavernia, E. J.

“…The well-established enhanced mechanical performance of ultrafine-grained (UFG) materials is often accompanied by poor thermal stability which precludes their…”
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Enhanced mechanical properties and electrical conductivity in ultrafine-grained Al alloy processed via ECAP-PC by Murashkin, M. Yu, Sabirov, I., Kazykhanov, V. U., Bobruk, E. V., Dubravina, A. A., Valiev, R. Z.

“…The objective of this work is to study the effect of grain refinement using equal channel angular pressing with parallel channels (ECAP-PC) on microstructure,…”
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The mechanism of formation of nanostructure and dissolution of cementite in a pearlitic steel during high pressure torsion by Ivanisenko, Yu, Lojkowski, W., Valiev, R.Z., Fecht, H.-J.

“…The nanostructure and the phase composition in UIC 860V pearlitic steel, deformed by high pressure torsion in the shear stress range from 62 to 430, were…”
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The Superstrength of Nanostructured Metallic Materials: Their Physical Nature and Hardening Mechanisms by Valiev, R. Z., Usmanov, E. I., Rezyapova, L. R.

“…Ultrafine grained (UFG) metallic materials obtained by severe plastic deformation (SPD) typically exhibit very high strength properties, whose values are much…”
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In vitro and in vivo studies on ultrafine-grained biodegradable pure Mg, Mg-Ca alloy and Mg-Sr alloy processed by high-pressure torsion by Li, Wenting, Liu, Xiao, Zheng, Yufeng, Wang, Wenhao, Qiao, Wei, Yeung, Kelvin W K, Cheung, Kenneth M C, Guan, Shaokang, Kulyasova, Olga B, Valiev, R Z

“…High-pressure torsion (HPT) can refine the microstructure and consequently modify the properties, such as mechanical and corrosion properties, of Mg and its…”
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New deformation twinning mechanism generates zero macroscopic strain in nanocrystalline metals by Wu, X L, Liao, X Z, Srinivasan, S G, Zhou, F, Lavernia, E J, Valiev, R Z, Zhu, Y T

“…Macroscopic strain was hitherto considered a necessary corollary of deformation twinning in coarse-grained metals. Recently, twinning has been found to be a…”
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Impact of Equal Channel Angular Pressing on Mechanical Behavior and Corrosion Resistance of Hot-Rolled Ti-2Fe-0.1B Alloy by Wang, Yanhuai, Li, Xin, Alexandrov, I V, Ma, Li, Dong, Yuecheng, Valiev, R Z, Chang, Hui, Zhang, Biao, Wang, Yuyang, Zhou, Lian, Hu, Zhiwei

“…In the present study, the unique bimodal grain size distribution microstructure with the ultrafine substrate and embedded macro grains was fabricated by a…”
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The new trends in fabrication of bulk nanostructured materials by SPD processing by Valiev, R Z

“…During the past decade, fabrication of bulk nanostructured metals and alloys using severe plastic deformation (SPD) has been evolving as a rapidly advancing…”
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Low-temperature superplasticity in nanostructured nickel and metal alloys by Mukherjee, A. K, McFadden, S. X, Mishra, R. S, Valiev, R. Z, Zhilyaev, A. P

“…Superplasticity - the ability of a material to sustain large plastic deformation - has been demonstrated in a number of metallic, intermetallic and ceramic…”
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Nanostructured Titanium for Biomedical Applications by Valiev, R. Z., Semenova, I. P., Latysh, V. V., Rack, H., Lowe, T. C., Petruzelka, J., Dluhos, L., Hrusak, D., Sochova, J.

“…In this paper the authors show that nanostructured commercial purity titanium produced by severe plastic deformation (SPD) opens new avenues and concepts for…”
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Formation of nanograined structure and decomposition of supersaturated solid solution during high pressure torsion of Al–Zn and Al–Mg alloys by Straumal, B.B, Baretzky, B, Mazilkin, A.A, Phillipp, F, Kogtenkova, O.A, Volkov, M.N, Valiev, R.Z

“…Structure and phase composition of five binary Al–Zn and Al–Mg alloys were studied before and after high pressure torsion (HPT) with a shear strain 300. The…”
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Superior strength of carbon steel with an ultrafine-grained microstructure and its enhanced thermal stability by Karavaeva, M. V., Kiseleva, S. K., Ganeev, A. V., Protasova, E. O., Ganiev, M. M., Simonova, L. A., Valiev, R. Z.

“…The paper presents the results of a study on the microstructure and mechanical properties of a medium-carbon steel (0.45 % C) processed by severe plastic…”
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Paradox of strength and ductility in metals processed by severe plastic deformation by Valiev, R Z, Alexandrov, I V, Zhu, Y T, Lowe, T C

“…It is well known that plastic deformation induced by conventional forming methods such as rolling, drawing or extrusion can significantly increase the strength…”
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In vitro and in vivo studies on nanocrystalline Ti fabricated by equal channel angular pressing with microcrystalline CP Ti as control by Nie, F. L., Zheng, Y. F., Wei, S.C., Wang, D. S., Yu, Z. T., Salimgareeva, G. K., Polyakov, A. V., Valiev, R. Z.

“…Bulk nanocrystalline Ti bars (Grade 4, ϕ4 × 3000 mm3) were massively fabricated by equal channel angular pressing (ECAP) via follow‐up conform scheme with the…”
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The Innovation Potential of Bulk Nanostructured Materials by Valiev, R. Z., Zehetbauer, M. J., Estrin, Y., Höppel, H. W., Ivanisenko, Y., Hahn, H., Wilde, G., Roven, H. J., Sauvage, X., Langdon, T. G.

“…The innovation potential is high for bulk nanostructured materials (BNM) produced by methods of severe plastic deformation and accordingly this report focuses…”
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Equal channel angular pressing of metal matrix composites: Effect on particle distribution and fracture toughness by Sabirov, I., Kolednik, O., Valiev, R.Z., Pippan, R.

“…An Al6061-20%Al 2O 3 powder metallurgy (PM) metal matrix composite (MMC) with a strongly clustered particle distribution is subjected to equal channel angular…”
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Localized deformation via multiple twinning in a Mg–Gd–Y–Zr alloy processed by high-pressure torsion by Tang, Lingling, Zhao, Yonghao, Liang, Ningning, Islamgaliev, R.K., Valiev, R.Z., Zhu, Y.T.

“…Different with common grain refinement dominated by dislocation activities, grain subdivision induced by sequential activation of multiple twinning was…”
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Bulk nanostructured materials from severe plastic deformation by Valiev, R.Z, Islamgaliev, R.K, Alexandrov, I.V

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