Search Results - "Yavari, A.R."

On the mechanical properties of TiNb based alloys by Guo, Y., Georgarakis, K., Yokoyama, Y., Yavari, A.R.

“…•Systematic study of compressive behaviors of TiNb based alloys in different states.•Comparison between X-ray diffraction results in reflection and…”
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Advanced ultra-light multifunctional metallic-glass wave springs by Panagiotopoulos, N.T., Georgarakis, K., Jorge Jr, A.M., Aljerf, M., Botta, W.J., Greer, A.L., Yavari, A.R.

“…We show that, using thermo-elastic processing, metallic-glass foils can be shaped, without being embrittled, into linear and annular wave springs. These…”
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Shear bands in metallic glasses: Size effects on thermal profiles by Miracle, D.B., Concustell, A., Zhang, Y., Yavari, A.R., Greer, A.L.

“…The characteristic dimensions of the hot, liquid zone behind a moving shear-band front in a metallic glass are analyzed. In addition to the expected dependence…”
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Probing the structure of a liquid metal during vitrification by Georgarakis, K., Hennet, L., Evangelakis, G.A., Antonowicz, J., Bokas, G.B., Honkimaki, V., Bytchkov, A., Chen, M.W., Yavari, A.R.

“…Using aerodynamic levitation, vitrification of a ternary Zr-Cu-Al alloy was observed in-situ by high energy synchrotron radiation X-ray diffraction in the…”
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H-sorption properties and structural evolution of Mg processed by severe plastic deformation by Botta, W.J., Jorge, A.M., Veron, M., Rauch, E.F., Ferrie, E., Yavari, A.R., Huot, J., Leiva, D.R.

“…•We report good H-sorption properties of commercial Mg processed by SPD.•The H-sorption properties are associated with adequate (0001) type texture.•Small…”
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Corrosion properties of Fe–Cr–Nb–B amorphous alloys and coatings by Koga, G.Y., Nogueira, R.P., Roche, V., Yavari, A.R., Melle, A.K., Gallego, J., Bolfarini, C., Kiminami, C.S., Botta, W.J.

“…In the present work, we report on the corrosion properties of the Fe60Cr8Nb8B24 (at.%) alloy produced using pure and commercial materials in the following…”
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Cu-based metallic glass particle additions to significantly improve overall compressive properties of an Al alloy by Dudina, D.V., Georgarakis, K., Aljerf, M., Li, Y., Braccini, M., Yavari, A.R., Inoue, A.

“…We report the development of a novel light-weight Al (520) alloy-based composite reinforced with particles of a Cu-based (Cu 54Zr 36Ti 10) metallic glass by…”
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Fabrication of nanoporous silver with open pores by Zhang, M., Jorge Junior, A.M., Pang, S.J., Zhang, T., Yavari, A.R.

“…Nanoporous silver, with an average grain size of 20–40nm and with asymmetric pores typically of ∼25 and 100nm width and length, respectively, was synthesized…”
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Nanoporous titanium obtained from a spinodally decomposed Ti alloy by Panagiotopoulos, N.T., Moreira Jorge, A., Rebai, I., Georgarakis, K., Botta, W.J., Yavari, A.R.

“…Porous noble metal surfaces were produced by gold-smiths in ancient times by dealloying. These processes lead to the formation of gold or other noble metal…”
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In situ visualization of Ni–Nb bulk metallic glasses phase transition by Oreshkin, A.I., Mantsevich, V.N., Savinov, S.V., Oreshkin, S.I., Panov, V.I., Yavari, A.R., Miracle, D.B., Louzguine-Luzgin, D.V.

“…We report the results of in situ investigation of the structural evolution and crystallization behavior of Ni-based bulk metallic glass. The X-ray diffraction,…”
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Shaping of metallic glasses by stress-annealing without thermal embrittlement by Aljerf, M., Georgarakis, K., Yavari, A.R.

“…► Metallic glasses can be thermo-mechanically shaped. ► Six of seven tested metallic glasses are full ductility after shaping. ► Shaping of these metallic…”
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Ultra-high strength above 5000 MPa and soft magnetic properties of Co–Fe–Ta–B bulk glassy alloys by Inoue, A., Shen, B.L., Koshiba, H., Kato, H., Yavari, A.R.

“…Glassy Co 43Fe 20Ta 5.5B 31.5 alloy rods with glass transition temperature of 910 K, followed by a large supercooled liquid region of 72 K were produced in the…”
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Mechanically induced waves in metallic glass foils by Panagiotopoulos, N.T., Yousfi, M.A., Georgarakis, K., Yavari, A.R.

“…The response of vitrified metallic arc foils under normal load is studied. Application of normal load on an initial arc shaped vitrified metallic foil is…”
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Propagation of shear bands in metallic glasses and transition from serrated to non-serrated plastic flow at low temperatures by Vinogradov, A., Lazarev, A., Louzguine-Luzgin, D.V., Yokoyama, Y., Li, S., Yavari, A.R., Inoue, A.

“…The mechanical behavior and the kinetics of shear banding in bulk metallic glasses was investigated at room and liquid nitrogen temperature using the acoustic…”
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Thermal expansion and indentation-induced free volume in Zr-based metallic glasses measured by real-time diffraction using synchrotron radiation by Hajlaoui, K., Benameur, T., Vaughan, G., Yavari, A.R.

“…Changes in thermal expansion coefficient and excess free volume content during in situ heating–cooling cycles of metallic glasses in the as-quenched state and…”
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Crystallization kinetics and magnetic properties of Fe66Nb4B30 bulk metallic glass by STOICA, M, KUMAR, S, ROTH, S, RAM, S, ECKERT, J, VAUGHAN, G, YAVARI, A. R

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Shear delocalization and crack blunting of a metallic glass containing nanoparticles: In situ deformation in TEM analysis by Hajlaoui, K., Yavari, A.R., Doisneau, B., LeMoulec, A., Botta F., W.J., Vaughan, G., Greer, A.L., Inoue, A., Zhang, W., Kvick, Å.

“…By carefully observing shear bands generated by tensile deformation in a transmission electron microscope, we report evidence of shear delocalization in a…”
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Microstructure evolution in copper under severe plastic deformation detected by in situ X-ray diffraction using monochromatic synchrotron light by Kilmametov, A.R., Vaughan, G., Yavari, A.R., LeMoulec, A., Botta, W.J., Valiev, R.Z.

“…Microstructure evolution in severely deformed Cu has been investigated using high-energy synchrotron light during in situ high-pressure torsion (HPT) at room…”
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Local atomic structure of Zr–Cu and Zr–Cu–Al amorphous alloys investigated by EXAFS method by Antonowicz, J., Pietnoczka, A., Zalewski, W., Bacewicz, R., Stoica, M., Georgarakis, K., Yavari, A.R.

“…▶ Coordination number, interatomic distances and mean square atomic displacement in Zr–Cu and Zr–Cu–Al glasses. ▶ Icosahedral symmetry in local atomic…”
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Plasticity induced by nanoparticle dispersions in bulk metallic glasses by Hajlaoui, K., Yavari, A.R., LeMoulec, A., Botta, W.J., Vaughan, F.G., Das, J., Greer, A.L., Kvick, Å.

“…We show room temperature plasticity in several ZrCu-based bulk metallic glasses (BMG) after dispersions of crystalline nanoparticles were generated prior to…”
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