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Journal of Alloys and Compounds
Article . 2013 . Peer-reviewed
License: Elsevier TDM
Data sources: Crossref
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Shape memory effect and high-temperature superelasticity in high-strength single crystals

Authors: Kireeva, Irina V. (физик); Panchenko, Elena Yu.; Karaman, Ibrahim; Maier, Hans Jürgen; Timofeeva, E. E.; Chumlyakov, Yuri I.;

Shape memory effect and high-temperature superelasticity in high-strength single crystals

Abstract

Abstract In the present study the temperature interval of superelasticity in Ti49.4Ni50.6, Co49Ni21Ga30, Ni54Fe19Ga27 and Fe41Ni28Co17Al11.5Ta2.5 (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 |σcrA| ∼ G/300−G/100 (G is shear modulus), and (ii) a low value of α = d|σcrM|/dT (|σcrM| is the critical stress required for stress-induced martensitic transformation) to achieve high-temperature superelasticity at Т > 373 K. A high stress level of austenite |σcrA| 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 |ɛ0|.

Country
Russian Federation
Keywords

эффект памяти формы, фазовые переходы, жаропрочные сплавы, высокотемпературная сверхэластичность, монокристаллы

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selected citations
These citations are derived from selected sources.
This is an alternative to the "Influence" indicator, which also reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Citations provided by BIP!
popularity
This indicator reflects the "current" impact/attention (the "hype") of an article in the research community at large, based on the underlying citation network.
BIP!Popularity provided by BIP!
influence
This indicator reflects the overall/total impact of an article in the research community at large, based on the underlying citation network (diachronically).
BIP!Influence provided by BIP!
impulse
This indicator reflects the initial momentum of an article directly after its publication, based on the underlying citation network.
BIP!Impulse provided by BIP!
39
Top 10%
Top 10%
Top 10%
Green