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S. STANCIU1, L.-G. BUJOREANU1,* , N. CIMPOESU1, I. IONIŢĂ1, V. MOLDOVEANU1
By means of displacement-temperature variation curves, the occurrence of work developing shape memory effect (SME) was revealed in the case of helical springs made from a Cu-Al-Ni shape memory alloy, obtained by investment casting. The corresponding critical temperatures of martensitic transformation, determined on springs trained by SME cycling, were compared to the results obtained by differential scanning calorimetry (DSC) and by dilatometry, on fragments cut from median coil of SMA springs, both in as-cast and in trained alloy. The microstructure of as-cast SMA springs was analyzed by scanning electron microscopy (SEM) in order to reveal martensite formation.
Cu-Al-Ni based shape memory alloys, Displacement-temperature curves, Investment casting, Critical transformation temperatures, Shape memory effect.
S. STANCIU, L.-G. BUJOREANU, N. CIMPOESU, I. IONIŢĂ, V. MOLDOVEANU, Shape memory effect and related characteristics of helical springs made from Cu–Al–Ni alloy by investment casting, Optoelectronics and Advanced Materials - Rapid Communications, 3, 6, June 2009, pp.581-585 (2009).
Submitted at: Feb. 13, 2009
Accepted at: June 15, 2009
Optoelectronics and Advanced Materials - Rapid Communications
(2023): 0.5 - 2023 Journal Citation Reports (Clarivate Analytics, 2024)
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