Multilayer “Steel/Vanadium Alloy/Steel” Hybrid Material Obtained by High-Pressure Torsion at Different Temperatures

2017 ◽  
Vol 48 (12) ◽  
pp. 6091-6101 ◽  
Author(s):  
S. O. Rogachev ◽  
S. A. Nikulin ◽  
A. B. Rozhnov ◽  
V. M. Khatkevich ◽  
T. A. Nechaykina ◽  
...  
Keyword(s):  
High Pressure ◽  
Alloy Steel ◽  
Hybrid Material ◽  
High Pressure Torsion ◽  
Vanadium Alloy ◽  
Different Temperatures ◽  
Multilayer Steel

High thermally stable multi-layer steel/vanadium alloy hybrid material obtained by high-pressure torsion

2019 ◽  
Vol 255 ◽  
pp. 126527 ◽  
Author(s):  
S.O. Rogachev ◽  
V.M. Khatkevich ◽  
S.A. Nikulin ◽  
M.V. Ignateva ◽  
A.A. Gromov
Keyword(s):  
High Pressure ◽  
Hybrid Material ◽  
High Pressure Torsion ◽  
Thermally Stable ◽  
Vanadium Alloy ◽  
Layer Steel

Structure and properties of a layered steel/vanadium alloy/steel composite prepared by high-pressure torsion

2016 ◽  
Vol 2016 (4) ◽  
pp. 375-379 ◽  
Author(s):  
S. A. Nikulin ◽  
S. O. Rogachev ◽  
A. B. Rozhnov ◽  
V. M. Khatkevich ◽  
T. A. Nechaikina ◽  
...  
Keyword(s):  
High Pressure ◽  
Alloy Steel ◽  
High Pressure Torsion ◽  
Vanadium Alloy ◽  
Structure And Properties ◽  
Steel Composite

Evolution of grain–subgrain structure and carbide subsystem upon annealing of a low-carbon low-alloy steel subjected to high-pressure torsion

2016 ◽  
Vol 117 (11) ◽  
pp. 1101-1110
Author(s):  
G. G. Maier ◽  
E. G. Astafurova ◽  
E. V. Melnikov ◽  
A. I. Smirnov ◽  
V. A. Bataev ◽  
...  
Keyword(s):  
High Pressure ◽  
Alloy Steel ◽  
High Pressure Torsion ◽  
Subgrain Structure ◽  
Low Carbon ◽  
Low Alloy Steel

Submicrocrystalline Austenitic Stainless Steel Processed by Cold or Warm High Pressure Torsion

2016 ◽  
Vol 838-839 ◽  
pp. 398-403 ◽  
Author(s):  
Marina Tikhonova ◽  
Nariman Enikeev ◽  
Ruslan Z. Valiev ◽  
Andrey Belyakov ◽  
Rustam Kaibyshev
Keyword(s):  
Plastic Deformation ◽  
High Pressure ◽  
Stainless Steel ◽  
Austenitic Stainless Steel ◽  
Severe Plastic Deformation ◽  
Room Temperature ◽  
High Pressure Torsion ◽  
Submicrocrystalline Structure ◽  
Ultrafine Grained ◽  
Different Temperatures

The formation of submicrocrystalline structure during severe plastic deformation and its effect on mechanical properties of an S304H austenitic stainless steel with chemical composition of Fe – 0.1C – 0.12N – 0.1Si – 0.95Mn – 18.4Cr – 7.85Ni – 3.2Cu – 0.5Nb – 0.01P – 0.006S (all in mass%) were studied. The severe plastic deformation was carried out by high pressure torsion (HPT) at two different temperatures, i.e., room temperature or 400°C. HPT at room temperature or 400°C led to the formation of a fully austenitic submicrocrystalline structure. The grain size and strength of the steels with ultrafine-grained structures produced by cold or warm HPT were almost the same. The ultimate tensile strengths were 1950 MPa and 1828 MPa after HPT at room temperature and 400°C, respectively.

scholarly journals Omega Phase Formation in Ti–3wt.%Nb Alloy Induced by High-Pressure Torsion

Materials ◽  
2021 ◽  
Vol 14 (9) ◽  
pp. 2262
Author(s):  
Anna Korneva ◽  
Boris Straumal ◽  
Askar Kilmametov ◽  
Alena Gornakova ◽  
Anna Wierzbicka-Miernik ◽  
...  
Keyword(s):  
Electron Microscopy ◽  
High Pressure ◽  
Phase Transformations ◽  
Grain Refinement ◽  
High Pressure Torsion ◽  
Β Phase ◽  
Ω Phase ◽  
Α Phase ◽  
Transmission Electron ◽  
Different Temperatures

It is well known that severe plastic deformation not only leads to strong grain refinement and material strengthening but also can drive phase transformations. A study of the fundamentals of α → ω phase transformations induced by high-pressure torsion (HPT) in Ti–Nb-based alloys is presented in the current work. Before HPT, a Ti–3wt.%Nb alloy was annealed at two different temperatures in order to obtain the α-phase state with different amounts of niobium. X-ray diffraction analysis, scanning electron microscopy (SEM) and transmission electron microscopy (TEM) were applied for the characterisation of phase transitions and evolution of the microstructure. A small amount of the β-phase was found in the initial states, which completely transformed into the ω-phase during the HPT process. During HPT, strong grain refinement in the α-phase took place, as did partial transformation of the α- into the ω-phase. Therefore, two kinds of ω-phase, each with different chemical composition, were obtained after HPT. The first one was formed from the β-phase, enriched in Nb, and the second one from the α-phase. It was also found that the transformation of the α-phase into the ω-phase depended on the Nb concentration in the α-Ti phase. The less Nb there was in the α-phase, the more of the α-phase was transformed into the ω-phase.

Heat Treatment of Centrifugally Cast High-Vanadium Alloy Steel for High-Pressure Grinding Roller

2014 ◽  
Vol 27 (3) ◽  
pp. 430-435 ◽  
Author(s):  
Haizhi Li ◽  
Weiping Tong ◽  
Junjun Cui ◽  
Hui Zhang ◽  
Liqing Chen ◽  
...  
Keyword(s):  
Heat Treatment ◽  
High Pressure ◽  
Alloy Steel ◽  
Vanadium Alloy ◽  
Centrifugally Cast
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