Impact of Heat Treatment Environment of Microstructure and Transformation Path in NiTi Shape Memory Alloy

Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68081723%3A_____%2F11%3A00376020" target="_blank" >RIV/68081723:_____/11:00376020 - isvavai.cz</a>
Result on the web
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DOI - Digital Object Identifier
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Result language
angličtina
Original language name
Impact of Heat Treatment Environment of Microstructure and Transformation Path in NiTi Shape Memory Alloy
Original language description
We report results of differential scanning calorimetry (DSC) experiments in which heat flow (T) from and to Ti-50.9at%Ni shape memory samples was recorded during the temperature scan through a B2 B19? transformation range. Prior to the DSC experiments, the samples were separately annealed in evacuated quartz capsules containing different hydrogen and helium mixtures with an overall filling pressure of 900 mbar. The quartz tubes containing the annealed samples were subsequently quenched into cold water.After quenching, the capsules were opened, martensitic transformations were investigated by DSC and the microstructure of the samples was assessed by transmission electron microscopy (TEM). Annealing in the mixtures with an increasing partial pressure ofhydrogen led to a considerable drop in the latent heat associated with the B2 B19? martensitic transformation. Results obtained using TEM suggest that hydrogen may function as a catalytic substance that accelerates the long range orderin
Czech name
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Czech description
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Project
<a href="/en/project/GA106%2F09%2F1913" target="_blank" >GA106/09/1913: Martensitic transformations in NiTi alloys</a><br>
Continuities
Z - Vyzkumny zamer (s odkazem do CEZ)

Publication year
2011
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

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