Rezultate 2008
Lucrare puplicata in Journal of
Optoelectronics and Advanced
Materials
Lucrarea se numeste:
"Study of precipitate formation in Cu–Al–Ni–Mn–Fe
shape memory alloys"
Autorii:
S. STANCIU, L.-G. BUJOREANU, BURAK ÖZKAL, M. LUTFI
ÖVEÇOĞLU, ANDREI VICTOR SANDU
Primii doi autori fac parte din colectivul de
cercetare al proiectului iar cei doi coautori Burak Ozcal si M.
Lutfi Ovecoglu sunt profesori la Istanbul Technical University,
Metallurgical and Materials Engineering Department PML LAB,
Turkey, institutie cu care membrii contractului au pus bazele
unei colaborari interdiciplinare.
Study of precipitate formation in Cu–Al–Ni–Mn–
Fe shape memory alloys
p. 1365-1369
The paper analyses the precipitation of γ2 phase within the γ’1 thermally
induced martensitic matrix of five Cu-Al-Ni-Fe-Mn shape memory alloys
(SMAs), by means of differential scanning calorimetry (DSC)
thermograms, optical microscopy (OM) and scanning electron
microscopy (SEM). It has been proved that the flat exothermic peaks,
occurring during the heating of martensitic specimens, correspond to
the formation of γ2 phase precipitates, which are characterized by two
specific morphologies, with dendrite arms at about 900 and a1200,
respectively. In spite of the presence of γ2 phase precipitates, the
occurrence of thermal memory has been emphasized, characterized by
shape recovery degrees higher than 96 %.
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option=magazine&op=view&idu=1415&catid=27 18.06.2008
