Počet záznamů: 1  

TEM phase analysis of NiTi shape memory alloy prepared by self-propagating high-temperature synthesis

  1. 1.
    0470162 - FZÚ 2019 RIV GB eng J - Článek v odborném periodiku
    Karlík, M. - Haušild, P. - Klementová, Mariana - Novák, P. - Beran, Přemysl - Perrière, L. - Kopeček, Jaromír
    TEM phase analysis of NiTi shape memory alloy prepared by self-propagating high-temperature synthesis.
    Advances in Materials and Processing Technologies. Roč. 3, č. 1 (2017), s. 58-69. ISSN 2374-068X
    Grant CEP: GA ČR(CZ) GA14-03044S; GA MŠMT LO1603
    GRANT EU: European Commission(XE) CZ.2.16/3.1.00/24510
    Institucionální podpora: RVO:68378271 ; RVO:61389005
    Klíčová slova: NiTi shape memory alloy, * neutron diffraction, * phase analysis, * light and electron microscopy
    Obor OECD: Condensed matter physics (including formerly solid state physics, supercond.)

    The effect of annealing a Ni–48at.%Ti alloy prepared by selfpropagation high-temperature synthesis (SHS) by means of transmission electron microscopy (TEM) was studied. The alloy in the as-sintered condition shows the presence of B2 NiTi matrix, relatively large particles (2–100 μm) of cubic NiTi2 phase and very fine densely distributed particles of rhombohedral Ni4Ti3 phase. The phase fractions were determined by the Rietveld refinement of neutron diffraction. Twelve-hour annealing at 1000 °C leads to coarsening of Ni4Ti3 particles. Slow furnace cooling from the annealing temperature results in a transformation of the rhombohedral Ni4Ti3 phase to a metastable Ni3Ti2 phase with cubic symmetry. Its particles, coherent with the B2 matrix, have the form of thin oval platelets with lenticular cross-section.
    Trvalý link: http://hdl.handle.net/11104/0295491

     
     
Počet záznamů: 1  

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