Oddelenie fyziky kovov

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Presentation transcript:

Oddelenie fyziky kovov Deformačné procesy a tepelná stabilita nanoštruktúrovaných zliatin

Oddelenie fyziky kovov Počet a štruktúra zamestnancov Kornel Csach Alena Juríková Jozef Miškuf – 0,15 Mária Huráková – obhajoba PhD 9/2016 Ivan Jurčo – technický pracovník

Oddelenie fyziky kovov A B C D E F G H J K L Skupina Meno, vek, FTE celk WOS publ. Počet WOS publikácií 2016, klasifikácia podľa SCIMAGO Počet APVV A/B Bilateral BAPVV/MAD Počet COST ...iné Počet EU 2020 R/P Počet PhD Celkový počet citácií Počet citácii 2015 h-index WOS Q1 Q2 Q3 Q4 S Q1P --------- OFK celkovo ---- 2 4 1 2/1 FTE = Skupina / FTE --- K. Csach 63 136 3 ------------ 411 31 15 A. Juríková 50 61 125 13 8 J. Miškuf 67 0.1 108 360 16 M.Huráková 28 0,05 A B C D E F G H J K Počet WOS publikácií 2016, klasifikácia podľa SCIMAGO Počet APVV A/B Bilateral BAPVV/MAD Počet COST, ...iné Počet EU 2020 R/P Počet PhD Počet VŠ V/T Počet SŠ FTE Q1 Q2 Q3 Q4 S Q1P OFK oddelenie celkovo 2 4 1 2/1 4/0 2.15 FTE = oddelenie / FTE 0,95 ---

Oddelenie fyziky kovov Projekty VEGA 2/0045/14 Mechanické vlastnosti a stabilita amorfných zliatin a nanorozmerných sústav Kornel Csach 2014 - 2017 APVV: APVV-15-0453 Nanočastice v anizotrópnych systémoch (MVISION), 2016-2020, zodp. rieš.: P. Kopčanský APVV - bilaterálne SK-UA 0027 Fyzikálne mechanizmy nízkoteplotnej plastickej deformácie a porušovania nových vysokopevných multikomponentých amorfných a vysokoentropických zliatin (2015-2016) z. rieš.: K. Csach SK-UA 0028 Relaxácia a fotoindukované javy v chalkogenidových sklách v systéme Ge-As-S (Se) (2015-2016) z. rieš.: K. Flachbart Medziakademická dohoda (MAD) SAS – NASU Mechanické vlastnosti a prejavy porušenia vysokopevných nanokryštalických kovov pripravených metódou viacnásobnej plastickej deformácie pri teplotách 300 a 77 K. Kornel Csach 2014 - 2016

Oddelenie fyziky kovov Zoznam publikácií: Q1: Mitrofanov Yu.P., Csach K., Jurikova A., Miskuf J., Wang W.H., Khonik V.A.: Densification-induced heat release upon structural relaxation of Zr-based bulk metallic glasses, Journal of Non-Crystalline Solids 448 (2016) pp. 31 – 35.   Q1: Mihalik, M.; Jaglicic, Z.; Fitta, M.; ... Csach K., et al.: Structural and magnetic study of PrMn1-xFexO3 compounds , JOURNAL OF ALLOYS AND COMPOUNDS 687 (2016), 652-661 Q3: Huráková, M.,  Csach, K.,  Miškuf, J.,  Juríková, A.,  Demčák, S.,  Ocelík, V.,  De Hosson, J.Th.M.: Serrated plastic flow of various metallic glasses during nanoindentation, Defect and Diffusion Forum 368, 2016, Pages 3-6 Q3: Balintová M., Demcak S., Holub M., Hurakova M.: Study of precipitates from mine water after defrosting and oxidation, Solid State Phenomena 244 (2016), pp. 234 – 239. Scopus: Nezahrnuté do VS-2015: Q4: Huráková M., Csach K., Miškuf J., Juríková A., Demčák Š., Ocelík V., De Hosson J.Th.M.: Discontinuities of plastic deformation in metallic glasses with different glass forming ability, Physics Procedia vol. 75, (2015), pp. 1265 – 1270.

Oddelenie fyziky kovov Medzinárodné konferencie organizované: Metallography 2016 Doktorandské štúdium: 1 interný 2012 -2016

Nízkoteplotné porušenie nanokryštalickej medi REM Vplyv protitlaku pri ECAP

Vplyv morfológie nanočastíc na kinetiku N-I premeny (DSC)

Vplyv geometrických podmienok na plastickú deformáciu pri nanoidentácii

Šírenie šmykových pásov počas in-situ ťahu REM σ σ

Zr47Cu45Al7Fe1 Zr46Cu45Al7Ti2 Zr56Co28Al16 Dilatometria DSC Meranie G rezonančnou metódou (modul pružnosti) IF = 2,04 (2015)

Motivácia: vzťah medzi štruktúrou a vlastnosťami Slipenyuk, J. Eckert Scripta Materialia 50 (2004) 39–44 Voľný objem – entalpia (zmena hustoty – integrál DSC) ≈ 550 kJ/mol. vacancy formation energy in Zr: 200 – 226 kJ/mol 2,5x viac ako vakancie; Nutné aj dodatočné topologické zmeny

Izotermická dilatometria a DSC DHm = bDvf V čase > 1 ks: DV(t)/V0 = v0 + kvlnt Hm(t)/V0 = H0 + kHlnt b ≈ 750 kJ/mol

Intersticial - [Granato]: Energia = 3x energia vakancie bi = (dDHm/dDvf) = HiNA /(ai + 1) G/m <100> interstitialcy in a molecular-dynamic model of copper Naša zhoda: 5 – 10 % - medzinárodná spolupráca

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