Kinetics of Thermoelastic Martensitic Transformation in TiNi
| Autor: | G. V. Markova, D. M. Levin, A. V. Shuytsev |
|---|---|
| Rok vydání: | 2019 |
| Předmět: |
010302 applied physics
Materials science 010308 nuclear & particles physics Hadron Kinetics General Physics and Astronomy Thermodynamics 01 natural sciences Condensed Matter::Materials Science Transformation (function) Thermoelastic damping Amplitude Martensite Diffusionless transformation 0103 physical sciences Deformation (engineering) |
| Zdroj: | Bulletin of the Russian Academy of Sciences: Physics. 83:1223-1230 |
| ISSN: | 1934-9432 1062-8738 |
| DOI: | 10.3103/s1062873819100137 |
| Popis: | The kinetics of the thermoelastic martensitic transformations of types В2 ↔ В19′ and В2 ↔ R ↔ В19′ in cast and powder Ni55–Ti45 alloys is studied. A way of calculating temperature dependence n(T) of the relative amount of transformed phase from measurements of the martensitic peak of internal friction is proposed. Experimental dependences n(T) at various amplitudes of deformation and heating rates are obtained. Based on the thermodynamics of equilibrium processes, a theoretical model of thermoelastic transformation is developed and a formula for calculating dependence n(T) is obtained. Theoretical dependence n(T) agrees with the experimental data. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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