Zobrazeno 1 - 10
of 75
pro vyhledávání: '"Askar Kilmametov"'
Publikováno v:
Metals, Vol 11, Iss 8, p 1263 (2021)
High-pressure torsion (HPT) is widely used not only as a severe plastic deformation (SPD) method to produce ultrafine-grained metals but also as a mechanical alloying technique to synthesize different alloys. In recent years, there have been several
Externí odkaz:
https://doaj.org/article/0802b7c343544e5c817a900f4f0891ae
Autor:
Boris Straumal, Askar Kilmametov, Anna Korneva, Pawel Zięba, Yuri Zavorotnev, Leonid Metlov, Olga Popova, Brigitte Baretzky
Publikováno v:
Crystals, Vol 11, Iss 7, p 766 (2021)
Cu–14 wt% Sn alloy was annealed at temperatures of 320 and 500 °C. The concentration of tin cinit in the copper-based matrix increased with annealing temperature. The annealed samples were subjected to high-pressure torsion (HPT) at 6 GPa, 5 turns
Externí odkaz:
https://doaj.org/article/7100f0ae361a45d0911f38964b9c58b8
Autor:
Mario J. Kriegel, Martin Rudolph, Askar Kilmametov, Boris B. Straumal, Julia Ivanisenko, Olga Fabrichnaya, Horst Hahn, David Rafaja
Publikováno v:
Metals, Vol 10, Iss 3, p 402 (2020)
In this work, the formation and thermal stability of the ω-Ti(Fe) phase that were produced by the high-pressure torsion (HPT) were studied in two-phase α-Ti + TiFe alloys containing 2 wt.%, 4 wt.% and 10 wt.% iron. The two-phase microstructure was
Externí odkaz:
https://doaj.org/article/fc2a18a36b4c4d0b8172f4b9d76fdeed
Autor:
Askar Kilmametov, Łukasz Gondek, Anna Korneva, Boris B. Straumal, Lidia Lityńska-Dobrzyńska, Paweł Zięba, Robert Chulist
Publikováno v:
Microscopy and microanalysis, 28 (3), 946-952
The study of the fundamentals of the α → ω and β → ω phase transformations induced by high-pressure torsion (HPT) in Ti–Nb-based alloys is presented in the current work. Prior to HPT, three alloys with 5, 10, and 20 wt% of Nb were annealed
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4cdb7115e6548e666e7d5fe9f60c2de4
https://doi.org/10.1017/s1431927621012277
https://doi.org/10.1017/s1431927621012277
Autor:
A. S. Gornakova, Boris B. Straumal, Mikhail Kiselevskiy, Eugen Rabkin, Askar Kilmametov, N. Yu. Anisimova
Publikováno v:
Russian Journal of Non-Ferrous Metals. 62:54-63
Titanium alloys have been used for medical purposes for over 60 years. They are employed in the manufacture of artificial heart valves, blood vessel stents, and endoprostheses of bones and joints (shoulders, knees, hips, and elbows); for the reconstr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::bcea806a0b74e5370c4c38dfb99404b4
https://doi.org/10.3103/s1067821221010156
https://doi.org/10.3103/s1067821221010156
Autor:
Yuanshen Qi, Anna Kosinova, Eugen Rabkin, Yaron Kauffmann, Boris B. Straumal, Askar Kilmametov
Publikováno v:
Materials Research Letters, Vol 9, Iss 1, Pp 58-64 (2021)
Materials Research Letters, 9 (1), 58-64
Materials Research Letters, 9 (1), 58-64
Gradient nanostructured metallic materials with a gradual change of grain boundary and dislocation density display unprecedent mechanical properties. Herein, we uncover a gradient of point defects concentration and concomitant gradient bandgap (E g)
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::da07add9d507557b0d8b5169b1414958
https://doaj.org/article/5fd28898ea904f8581a96fb49f0eb7e3
https://doaj.org/article/5fd28898ea904f8581a96fb49f0eb7e3
Autor:
P. B. Straumal, Boris B. Straumal, Brigitte Baretzky, Anna Korneva, Askar Kilmametov, O. A. Kogtenkova, Lidia Lityńska-Dobrzyńska, Paweł Zięba, Robert Chulist
Publikováno v:
Acta Materialia. 195:184-198
The high-pressure torsion (HPT) of binary copper alloys with 3, 5, 8, 10 wt. % Ag and 14 wt. % Sn has been studied at room temperature THPT. Before HPT, the Cu–Ag alloys have been annealed at 12 different temperatures between 320 and 800 °C and Cu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1852112701d04e9545cbbb339e0aea10
https://doi.org/10.1016/j.actamat.2020.05.055
https://doi.org/10.1016/j.actamat.2020.05.055
Autor:
Boris B. Straumal, Svetlana G. Protasova, A. V. Druzhinin, Andrey Mazilkin, Brigitte Baretzky, Askar Kilmametov
Publikováno v:
JETP Letters. 112:37-44
In this work, we studied the behavior of the Nd–Dy–Fe–Co–Cu–B alloy for permanent magnets under high pressure torsion (HPT). In the initial state of the studied alloy, it mainly contained the crystalline phase τ1 (Nd, Dy)2(Fe, Co, Cu) 14B.
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b7d3abe35d4f5e0dbd4e838bf2e82c78
https://doi.org/10.1134/s0021364020130020
https://doi.org/10.1134/s0021364020130020
Autor:
Askar Kilmametov, Andrey Mazilkin, A. N. Nekrasov, A. S. Gornakova, Mario J. Kriegel, Boris B. Straumal, David Rafaja, Brigitte Baretzky, Olga Fabrichnaya, M. F. Bulatov
Publikováno v:
JETP Letters. 111:568-574
The effect of the phase composition on the α/β-Ti(Fe)→ω-Ti(Fe) transformation in the Ti-4 wt % Fe alloy under shear strain with high-pressure torsion (HPT) has been studied. For shear deformation by means of HPT, two initial states of the alloy
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::063400f6814032432d388d12fc534745
https://doi.org/10.1134/s0021364020100033
https://doi.org/10.1134/s0021364020100033
Autor:
Andrey Mazilkin, Boris B. Straumal, Brigitte Baretzky, Olga Kogtenkova Kogtenkova, Anna Korneva, Askar Kilmametov, Paweł Zięba
Publikováno v:
Acta Metallurgica Slovaca. 25:230-252
Severe plastic deformation (SPD) can induce various phase transformations. After a certain strain, the dynamic equilibrium establishes between defects production by an external force and their relaxation (annihilation). The grain size, hardness, phas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::67a618cb1da63bf2b2f93f62d2e413c5
https://doi.org/10.12776/ams.v25i4.1368
https://doi.org/10.12776/ams.v25i4.1368