0185478 - UJF-V 20010206 RIV NL eng J - Článek v odborném periodiku
Šittner, P. - Lukáš, Petr - Novák, V. - Neov, Dimitar - Ceretti, M.
In situ neutron diffraction study of stresses generated by shape memory alloys.
Journal of Neutron Reasearch. Roč. 9, - (2001), s. 79-86. ISSN 1023-8166. E-ISSN 1477-2655
Grant CEP: GA AV ČR IAA1048107; GA AV ČR KSK1010104
Kód oboru RIV: BM - Fyzika pevných látek a magnetismus

In situ neutron diffraction expetiments on polycrystalline shape memory alloys/SMA/transforming in thermomechanical cycles were carried out with the aim to learn how to determine stress-strain-temperature responses of SMAs from the in situ neutron diffraction data. Results of a single experiment on NiTi polycrystal deformed in compression at constant temperature are reported. It is found that the macroscopic stress-strain response of the polycrystal can be evaluated from diffraction measured lattice strains (peak position) and integral intensities of a particular well chosen austenite hkl-reflection. The neutron diffraction technique may thus be possibly used to evaluate in situ stress-strain-temperature responses of otherwise inaccessible SMA elements embedded in the smart SMA-composites.
Trvalý link: http://hdl.handle.net/11104/0081873