du.sePublications
Change search
Refine search result
1 - 16 of 16
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • chicago-author-date
  • chicago-note-bibliography
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Rows per page
  • 5
  • 10
  • 20
  • 50
  • 100
  • 250
Sort
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
  • Standard (Relevance)
  • Author A-Ö
  • Author Ö-A
  • Title A-Ö
  • Title Ö-A
  • Publication type A-Ö
  • Publication type Ö-A
  • Issued (Oldest first)
  • Issued (Newest first)
  • Created (Oldest first)
  • Created (Newest first)
  • Last updated (Oldest first)
  • Last updated (Newest first)
  • Disputation date (earliest first)
  • Disputation date (latest first)
Select
The maximal number of hits you can export is 250. When you want to export more records please use the Create feeds function.
  • 1. Jayamani, Jayaraj
    et al.
    Gebert, A.
    Schultz, L.
    Passivation behaviour of structurally relaxed Zr48Cu36Ag8Al8 metallic glass2009In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 479, no 1, p. 257-261Article in journal (Refereed)
    Abstract [en]

    The electrochemical corrosion behaviour of as-prepared and structurally relaxed Zr48Cu36Ag8Al8 glassy alloy samples was investigated in 1M H2SO4. Results show that the active–passive transition behaviour of Zr48Cu36Ag8Al8 glassy alloy depends on the amount of free volume (FV) present in the metallic glassy alloy. Poor passivation due to active dissolution of Cu was displayed by the Zr48Cu36Ag8Al8 glassy alloy when it was in a high energy metastable state with relative high amount of FV. It is shown that by reducing the amount of FV in the glass, the passivation behaviour is significantly improved.

  • 2. Jayamani, Jayaraj
    et al.
    Kim, Y. C.
    Kim, K. B.
    Seok, H. K.
    Fleury, E.
    Corrosion behaviors of Fe45−xCr18Mo14C15B6Y2Mx (M=Al, Co, Ni, N and x=0, 2) bulk metallic glasses under conditions simulating fuel cell environment2007In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 434-435, p. 237-239Article in journal (Refereed)
    Abstract [en]

    The corrosion properties of the Fe45−xCr18Mo14C15B6Y2Mx (with M=Al, Co, Ni, N and x=0, 2) bulk metallic glasses have been investigated in a 1M H2SO4+2ppm F− solution at 80°C with H2 and air bubbling, which simulate environments of the polymer electrolyte membrane fuel cell. The partial replacement of 2at.% Fe led to significant modification of the corrosion behavior and resulted in corrosion resistances superior to that of stainless steel.

  • 3.
    Khoshkhoo, Mohsen Samadi
    et al.
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Scudino, Sergio
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Thomas, Jürgen
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Surreddi, Kumar Babu
    IFW Dresden, Institut für Komplexe Materialien.
    Eckert, Jürgen
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Grain and crystallite size evaluation of cryomilled pure copper2011In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 509, p. S343-S347Article in journal (Refereed)
  • 4. Poddar, C.
    et al.
    Ningshen, S.
    Jayamani, Jayaraj
    Corrosion assessment of Ni60 Nb30Ta10 metallic glass and its partially crystallized alloy in concentrated nitric acid environment2020In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 813Article in journal (Refereed)
    Abstract [en]

    The corrosion resistance and passive film properties of Ni60Nb30Ta10 metallic glass and partially crystallized ribbon were investigated in 11.5 M nitric acid. The XRD study confirms the formation of nano-crystalline α-Ni in the amorphous matrix during crystallization at 650 °C under vacuum for 1 h. The electrochemical impedance spectroscopy, potentiodynamic polarization, and Mott-Schottky studies on the metallic glass exhibited higher corrosion resistance compared to the partially crystallized ribbon. XPS confirms the enrichment of Nb2O5 and Ta2O5 in the passive film of the glassy structure, while α-Ni is depleted in a partially crystallized alloy that affected the corrosion resistance.

  • 5. Poddar, Chiranjit
    et al.
    Jayamani, Jayaraj
    Mallika, C.
    Kamachi Mudali, U.
    Oxidation behaviour of Ni60Nb30Ta10 metallic glass below its glass transition temperature2017In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 728, p. 1146-1152Article in journal (Refereed)
    Abstract [en]

    The oxidation behaviour of Ni60Nb30Ta10 metallic glass in air was investigated below its glass transition temperature (665 °C). The oxidation kinetics followed two-stage parabolic rate law at 450 and 550 °C. The parabolic rate constant increased with increase in the oxidation temperature. At 450 °C, a thin amorphous oxide film consisting predominantly Nb2O5 and Ta2O5, with traces of NiO and Ni2O3 was observed on the surface. At 550 °C, oxidation induced outward diffusion of Ni2+ and Ni3+ ions resulted in a thick oxide layer, containing extensive cubic NiO and monoclinic Ni2O3 with traces of metallic Ni on the surface. Interestingly, at 550 °C the Nb2O5 and Ta2O5 oxides were completely absent on the surface of the oxidised layer.

  • 6. Poddar, Chiranjit
    et al.
    Jayamani, Jayaraj
    Ningshen, S.
    Passive film characteristics and corrosion behavior of thermally oxidized Ni60Nb30Ta10 metallic glass in nitric acid medium2019In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 783, p. 680-686Article in journal (Refereed)
    Abstract [en]

    X-ray photoelectron spectroscopy (XPS) analyses confirmed the formation of different oxides upon thermal air oxidation (TO) of Ni60Nb30Ta10 metallic glass (MG) below the glass transition temperature. At 450 °C (450 TO-MG), surface of the oxide film was enriched with Nb2O5 (65%) and Ta2O5 (26%). Similarly, at 550 °C (550 TO-MG), the upper oxide layer was composed with NiO (67%), Ni2O3 (28.5%) and small fraction metallic Ni (4.5%). The electrochemical corrosion behavior of the thermally oxidized metallic glass samples was studied in 1, 6 and 11.5 M nitric acid at room temperature. Mott-Schottky analyses in nitric acid solutions confirmed the n-type semiconducting nature of the film for as-spun MG. On the other hand, the films formed on 450 TO-MG, and 550 TO-MG exhibited insulating and p-type, respectively. The donor (n-type) and acceptor (p-type) densities increases as the solution concentration increased. In nitric acid solutions, the current densities values obtained from potentiodynamic polarization studies indicated that 450 TO-MG exhibited higher corrosion resistance than the as-spun and 550 TO-MG samples.

  • 7. Scudino, S.
    et al.
    Surreddi, Kumar Babu
    Dalarna University, School of Technology and Business Studies, Materials Technology.
    Shear band morphology and fracture behavior of cold-rolled Zr52.5Ti5Cu18Ni14.5Al10 bulk metallic glass under tensile loading2017In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 708, p. 722-727Article in journal (Refereed)
    Abstract [en]

    The effect of the shear bands generated by cold rolling on the tensile ductility and fracture behavior of the Zr52.5Ti5Cu18Ni14.5Al10 bulk metallic glass (BMG) is analyzed. The results reveal significant changes in the fracture behavior of the cold-rolled material with respect to the as-cast BMG. Fracture in the cold-rolled glass occurs along the pre-existing shear bands forming an angle of 45° with the loading direction. In addition, the fracture morphology shows a regular vein pattern oriented along the shear direction, which indicates that a considerable shear stress is active on the fracture plane. This is in contrast to the fracture behavior of the as-cast glass, where the normal stress plays a significant role. Here, the fracture angle is 55° and the fracture surface is characterized by the conventional irregular pattern of radiating ridges. Finally, work-hardening was observed in the cold-rolled BMG even in the absence of visible shear band intersection. Possible alternative mechanisms for determining this behavior are discussed. © 2017 Elsevier B.V.

  • 8.
    Scudino, Sergio
    et al.
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Jerliu, Bujar
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Surreddi, Kumar Babu
    IFW Dresden, Institut für Komplexe Materialien.
    Kühn, Uta
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Eckert, Jürgen
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Effect of cold rolling on compressive and tensile mechanical properties of Zr52. 5Ti5Cu18Ni14.5Al10 bulk metallic glass2011In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 509Article in journal (Refereed)
  • 9.
    Scudino, Sergio
    et al.
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Sakaliyska, Mira
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Surreddi, Kumar Babu
    IFW Dresden, Institut für Komplexe Materialien.
    Eckert, Jürgen
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Mechanical alloying and milling of Al–Mg alloys2009In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 483, no 1-2, p. 2-7Article in journal (Refereed)
  • 10.
    Scudino, Sergio
    et al.
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Sakaliyska, Miroslava
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Surreddi, Kumar Babu
    IFW Dresden, Institut für Komplexe Materialien.
    Ali, Fahad
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Eckert, Jürgen
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Structure and mechanical properties of Al–Mg alloys produced by copper mold casting2010In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 504, p. S483-S486Article in journal (Refereed)
  • 11.
    Scudino, Sergio
    et al.
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Venkataraman, Shankar
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Stoica, Mihai
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Surreddi, Kumar Babu
    IFW Dresden, Institut für Komplexe Materialien.
    Pauly, Simon
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany; .
    Das, Jayanta
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Eckert, Jürgen
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Consolidation and mechanical properties of ball milled Zr50Cu50 glassy ribbons2009In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 483, no 1-2, p. 227-230Article in journal (Refereed)
  • 12.
    Sina, Hossein
    et al.
    Materials Engineering, Lund University, P.O. Box 118, 22100, Lund, Sweden.
    Surreddi, Kumar Babu
    Materials Engineering, Lund University.
    Iyengar, Srinivasan
    Materials Engineering, Lund University, P.O. Box 118, 22100, Lund, Sweden.
    Phase evolution during the reactive sintering of ternary Al–Ni–Ti powder compacts2016In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 661, p. 294-305Article in journal (Refereed)
  • 13.
    Srivastava, Vikas C
    et al.
    Metal Extraction & Forming Division, National Metallurgical Laboratory, Jamshedpur 831 007, India.
    Surreddi, Kumar Babu
    IFW Dresden, Institut für Komplexe Materialien.
    Scudino, Sergio
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Schowalter, Marco
    Institut für Festkörperphysik, Universität Bremen, Otto-Hahn-Allee 1, D-28359 Bremen, Germany.
    Uhlenwinkel, Volker
    Institut für Werkstofftechnik, Universität Bremen, Badgasteiner Str. 3, D-28359 Bremen, Germany.
    Schulz, Alwin
    Institut für Werkstofftechnik, Universität Bremen, Badgasteiner Str. 3, D-28359 Bremen, Germany.
    Eckert, Jürgen
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Rosenauer, Andreas
    Institut für Festkörperphysik, Universität Bremen, Otto-Hahn-Allee 1, D-28359 Bremen, Germany.
    Zoch, Hans Werner
    Institut für Werkstofftechnik, Universität Bremen, Badgasteiner Str. 3, D-28359 Bremen, Germany.
    Microstructural characteristics of spray formed and heat treated Al–(Y, La)–Ni–Co system2013In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 578, p. 471-480Article in journal (Refereed)
  • 14.
    Surreddi, Kumar Babu
    et al.
    IFW Dresden, Institut für Komplexe Materialien.
    Scudino, Sergio
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Sakaliyska, Mira
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Prashanth, Konda Gokuldoss
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Sordelet, D J
    Advanced Materials Technology Group, Caterpillar Inc.Mossville, USA.
    Eckert, Jürgen
    IFW Dresden, Institut für Komplexe Materialien, Postfach 27 01 16, D-01171 Dresden, Germany.
    Crystallization behavior and consolidation of gas-atomized Al84Gd6Ni7Co3 glassy powder2010In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 491, no 1-2, p. 137-142Article in journal (Refereed)
  • 15. Thirathipviwat, P.
    et al.
    Song, G.
    Jayamani, Jayaraj
    Dalarna University, School of Technology and Business Studies, Materials Technology.
    Bednarcik, J.
    Wendrock, H.
    Gemming, T.
    Freudenberger, J.
    Nielsch, K.
    Han, J.
    A comparison study of dislocation density, recrystallization and grain growth among nickel, FeNiCo ternary alloy and FeNiCoCrMn high entropy alloy2019In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 790, p. 266-273Article in journal (Refereed)
    Abstract [en]

    The microstructural evolutions in terms of dislocation density, annealing twin density as well as with respect to microstructural changes due to recrystallization and grain growth were investigated in pure Ni, equiatomic FeNiCo alloy, and FeNiCoCrMn high entropy alloy (HEA) during the thermomechanical process. All samples were single phase and showed a face-centered cubic (FCC) lattice structure. This was maintained during thermomechanical processing comprising of cold swaging by 85% reduction of cross-sectional area and subsequent annealing at 800 °C. The level of dislocation accumulation during cold swaging increased with the number of constituent elements. The FeNiCoCrMn HEA obtained the highest dislocation density, followed by the FeNiCo and Ni, respectively. After the annealing at 800 °C for 0.5 h, all samples achieved the large fraction of recrystallized grains with minor fraction of substructured grains and no deformed grain. The FeNiCoCrMn HEA obtained the smallest recrystallized grain size (∼5 μm) after the annealing at 800 °C for 0.5 h. This could be a result of the highest dislocation density generated during cold swaging prior to the annealing. The prolonged annealing at 800 °C for up to 24 h led to a grain growth for all the samples, however, at different growth rates. The FeNiCoCrMn HEA revealed the lowest rate of grain growth, but the microstructural changes during the annealing were not significantly different between the FeNiCo and Ni samples. Besides the effect of the number of constituent elements, the type and the combination of constituent elements have an effect on the microstructural evolution during the annealing.

  • 16. Vida, Á.
    et al.
    Maksa, Z.
    Molnar, David
    Dalarna University, School of Technology and Business Studies, Materials Technology. KTH.
    Huang, S.
    Kovac, J.
    Varga, L. K.
    Vitos, L.
    Chinh, N. Q.
    Evolution of the phase structure after different heat treatments in NiCoFeCrGa high entropy alloy2018In: Journal of Alloys and Compounds, ISSN 0925-8388, E-ISSN 1873-4669, Vol. 743, p. 234-239Article in journal (Refereed)
1 - 16 of 16
CiteExportLink to result list
Permanent link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • chicago-author-date
  • chicago-note-bibliography
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf