TY  - SER
AU  - Kireeva,Irina V.
AU  - Panchenko,Elena Yu
AU  - Karaman,Ibrahim
AU  - Maier,Hans Jürgen
AU  - Timofeeva,Ekaterina E.
AU  - Chumlyakov,Yuri I.
ED  - Томский государственный университет
TI  - Shape memory effect and high-temperature superelasticity in high-strength single crystals
KW  - эффект памяти формы
KW  - монокристаллы
KW  - жаропрочные сплавы
KW  - высокотемпературная сверхэластичность
KW  - фазовые переходы
KW  - статьи в журналах
N1  - Библиогр.: 15 назв; Ограниченный доступ
N2  - In the present study the temperature interval of superelasticity in Ti 49.4Ni50.6, Co49Ni21Ga30, Ni54Fe19Ga27 and Fe41Ni 28Co17Al11.5Ta2.5 (at%) single crystals are investigated. It is shown that it is necessary to produce materials with (i) a high yield stress level of the high-temperature phase of œσcr A˜  G/300-G/100 (G is shear modulus), and (ii) a low value of α = dœσcr M˜/dT (œσcr M˜ is the critical stress required for stress-induced martensitic transformation) to achieve high-temperature superelasticity at T > 373 K. A high stress level of austenite œσcr A˜ can be obtained through selection of the crystal axis orientation, the stress state (tension vs. compression), variation of the chemical composition of the intermetallic compounds, and precipitation of dispersed particles. Low values of α are realized for crystal orientations providing maximum values for the transformation strain É0œ
UR  - http://vital.lib.tsu.ru/vital/access/manager/Repository/vtls:000470580
ER  -