Особенности развития термоупругих мартенситных превращений под нагрузкой в [110]-монокристаллах сплава Ni[51]Fe[18]Ga[27]Co[4]
| Parent link: | Перспективы развития фундаментальных наук=Prospects of Fundamental Sciences Development: сборник научных трудов XV Международной конференции студентов, аспирантов и молодых ученых, г. Томск, 24-27 апреля 2018 г./ Национальный исследовательский Томский политехнический университет (ТПУ) ; под ред. И. А. Курзиной, Г. А. Вороновой.— , 2018 Т. 1 : Физика.— 2018.— [С. 241-243] |
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| その他の著者: | , |
| 要約: | Заглавие с экрана In the present study, we investigated the stress-indused termoelastic martensitic transformations in Ni[51]Fe[18]Ga[27]Co[4] single crystals oriented along the [110]-direction. It was shown that high-temperature annealing at a temperature higher than the order-disorder transition temperature affects of the stress-indused termoelastic martensitic transformations due to a change in the structure of the high-temperature phase of L21 by B2, the dissolution of the [gamma] − phase. The isobaric experiments (shape memory effect) under external applied stress [sigma]=100 МПа have shown that for (L21+[gamma]) -crystals of the reversible deformation is [epsilon] SME = 2,1 % with insignificant irreversibility and thermal hysteresi s [delta] Т=(29 ± 2) K. For В2-crystals the reversible deformation [epsilon] SME = 4,5%, accompanied by the presence of an irreversible deformation to 1,6% and the thermal hysteresis value [delta] T=(61 ± 2) K. The isothermal experiments (superelasticity) shown the energy dissipation at T=323 K is [sigma]=(89 ± 2) MPa and decreases with increasing test temperature in the B2-crystals. |
| 言語: | ロシア語 |
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2018
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| オンライン･アクセス: | http://earchive.tpu.ru/handle/11683/50998 |
| フォーマット: | 電子媒体 図書の章 |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=627435 |
| 要約: | Заглавие с экрана In the present study, we investigated the stress-indused termoelastic martensitic transformations in Ni[51]Fe[18]Ga[27]Co[4] single crystals oriented along the [110]-direction. It was shown that high-temperature annealing at a temperature higher than the order-disorder transition temperature affects of the stress-indused termoelastic martensitic transformations due to a change in the structure of the high-temperature phase of L21 by B2, the dissolution of the [gamma] − phase. The isobaric experiments (shape memory effect) under external applied stress [sigma]=100 МПа have shown that for (L21+[gamma]) -crystals of the reversible deformation is [epsilon] SME = 2,1 % with insignificant irreversibility and thermal hysteresi s [delta] Т=(29 ± 2) K. For В2-crystals the reversible deformation [epsilon] SME = 4,5%, accompanied by the presence of an irreversible deformation to 1,6% and the thermal hysteresis value [delta] T=(61 ± 2) K. The isothermal experiments (superelasticity) shown the energy dissipation at T=323 K is [sigma]=(89 ± 2) MPa and decreases with increasing test temperature in the B2-crystals. |
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