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Showing 1 to 3 of 3 for “"Martensit"”.
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Struktureinstellung und magnetische Dehnung in polykristallinen magnetischen Ni-Mn-Ga – Formgedächtnislegierungen
… aufgrund von Zwillingsgrenzenbewegung in der martensitischen Tieftemperaturphase. Da der Effekt bislang an Einkristallen untersucht wurde, ist es das Ziel dieser Arbeit, den Effekt an polykristallinen Proben nachzuweisen. Dafür wurden Proben nach dem Prinzip der gerichteten Erstarrung …
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Zeitabhängige Phänomene in athermischen Formgedächtnislegierungen
… each exhibiting a weakly first order martensitic phase transition with shape memory effect, have been studied. These alloys are model alloys for the observation of precursor effects and therefore are particularly suited for measurements of time dependent phenomena. Firstly optical …
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Avalanche dynamics of structural phase transitions in shape memory alloys by acoustic emission spectroscopy
… cycles at a constant temperature in the martensitic phase. All samples analyzed in this work show power law behavior in the acoustic emission features amplitude, energy, and duration, which indicates scale-free behavior. The access to these power law spectra allows an investigation of …