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Wyszukujesz frazę "Kovacova, A." wg kryterium: Autor


Wyświetlanie 1-4 z 4
Tytuł:
Post SPD Materials Recovery in Thermal Exposition
Autorzy:
Kvačkaj, T.
Kováčová, A.
Kočiško, R.
Powiązania:
https://bibliotekanauki.pl/articles/1402127.pdf
Data publikacji:
2015-10
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Bx
81.07.-b
81.20.Hy
81.40.Cd
Opis:
The mechanical and thermo-physical properties of Cu-Cr-Zr alloys in dependence on processing conditions were studied. The processing conditions consisted of solution annealing at temperature of 1020°C for 60 min followed by water quenching. This was followed by one equal channel angular pressing pass carried out at ambient temperature, ageing treatment ($T_{AT}$∈ (20;480⟩°C, $t_{AT}$∈ ⟨30;150⟩ min) and cooling in water. The maximal strengthening effect coming from dislocations & grain size refinement & precipitation strengthening of ΔHV0.1=130 was achieved at $T_{AT}$=480°C and for $t_{AT}$=120 min. From differential scanning calorimetry analysis, two partial exothermal peaks were recognized and classified as major and minor, these peaks are used to determination the stored energy coming from recrystallization and precipitation ($\Delta H_R$ and $\Delta H_P$). The maximal value in stored energy of $H_{1 \times \text{ECAP}} = 2.923 J//g$ was obtained after 1st ECAP pass.
Źródło:
Acta Physica Polonica A; 2015, 128, 4; 689-692
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
The Effect of Severe Plastic Deformation and Heat Treatment on CuCrZr Alloys
Autorzy:
Kováčová, A.
Kvačkaj, T.
Kočiško, R.
Dragošek, L.
Lityńska-Dobrzyńska, L.
Powiązania:
https://bibliotekanauki.pl/articles/1032905.pdf
Data publikacji:
2017-05
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Bx
81.40.Cd
61.72.Ff
Opis:
CuCrZr alloy was subjected to equal channel angular pressing method, belonging to the severe plastic deformation group, followed by heat treatment under different ageing conditions to optimize mechanical properties of the alloy. Before equal channel angular pressing, CuCrZr alloy was treated by solution annealing at temperature 1020°C for 1 h. Afterwards, samples were pressed through an equal channel angular pressing die once at room temperature and subjected to artificial ageing under different conditions (200, 400, 450, 480°C for 30, 60, 90, 120, 150 min). Optimization of the CuCrZr alloy was done through the study of mechanical properties and microhardness as a function of ageing temperature and time considering the progress in microstructural/substructural features.
Źródło:
Acta Physica Polonica A; 2017, 131, 5; 1336-1339
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Influence of Annealing Conditions on Structural Development of Cryo Rolled FeSi Steel
Autorzy:
Kvackaj, T.
Bidulska, J.
Bidulsky, R.
Kovacova, A.
Kocisko, R.
Bella, P.
Luptak, M.
Bacso, J.
Powiązania:
https://bibliotekanauki.pl/articles/1367991.pdf
Data publikacji:
2014-07
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
75.50.Bb
81.05.Bx
81.40.Rs
81.40.Ef
Opis:
Non grain oriented isotropic electrical steels, commercially called NGOES, were investigated in cryogenic temperature conditions. At cryogenic temperatures plastic deformations form strong structural heterogeneities in the sample thickness. Samples processed by cryo rolling show a bigger storage energy. To achieve abnormal grain growth through the process of static recrystallization, the annealing conditions were applied to the deformed samples. Moreover, minimal magnetic losses were reached when mean grain size diameter was approximately 150 μm.
Źródło:
Acta Physica Polonica A; 2014, 126, 1; 184-185
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
Tytuł:
Mechanical and Structural Properties of High Purity Al Processed by ECAP
Autorzy:
Kvačkaj, T.
Kočiško, R.
Pokorný, I.
Bidulská, J.
Kvačkaj, M.
Kováčová, A.
Bidulský, R.
Lityńska-Dobrzyńska, L.
Dutkiewicz, J.
Powiązania:
https://bibliotekanauki.pl/articles/1418957.pdf
Data publikacji:
2012-09
Wydawca:
Polska Akademia Nauk. Instytut Fizyki PAN
Tematy:
81.05.Bx
81.07.-b
81.20.Hy
81.40.-z
Opis:
The mechanical properties and substructure formation of high purity aluminium (99.999%) processed by severe plastic deformation method (equal channel angular pressing) were studied. The equal channel angular pressing process was carried out at room temperature by route C (sample rotation around the axis about 180° after each pass) in a die with two channels intersecting at an angle of Φp = 90. The softening mechanism through dynamic recovery was recognized up to 6th equal channel angular pressing pass, however, after that the mechanical strengthening was revealed. The samples after equal channel angular pressing processing were annealed in different temperature and time conditions. The influence of annealing temperature and time on microhardness as well as diameter of grain size were investigated in samples processed by the 4th equal channel angular pressing pass.
Źródło:
Acta Physica Polonica A; 2012, 122, 3; 557-560
0587-4246
1898-794X
Pojawia się w:
Acta Physica Polonica A
Dostawca treści:
Biblioteka Nauki
Artykuł
    Wyświetlanie 1-4 z 4

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