Orientation Dependence of Cycle Stability of Superelasticity Response in Quenched and Aged Ferromagnetic Co35Ni35Al30 Single Crystal

A.S. Eftifeeva; E.Yu. Panchenko; Yuriy Chumlyakov

doi:10.4028/www.scientific.net/AMR.1040.119

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HomeAdvanced Materials ResearchAdvanced Materials Research Vol. 1040Orientation Dependence of Cycle Stability of...

Orientation Dependence of Cycle Stability of Superelasticity Response in Quenched and Aged Ferromagnetic Co₃₅Ni₃₅Al₃₀Single Crystal

Abstract:

Using Co₃₅Ni₃₅Al₃₀ (at.%) single crystals the effects of crystals axis orientation and ageing at 673 K for 0.5 h in free state on superelasticity responses in compression are investigated. Ageing of these single crystals is found to result in strengthening of the high-temperature В2 phase and L1₀ martensite, twofold increasing of temperature interval of SE response and weakening of the orientation dependence and improving the cycle stability of superelasticity response. In [011]- and [123]-oriented single crystals the values of the stress hysteresis decrease a nearly threefold as compared to the quenched state. The combination of high-strength [001] crystal axis orientation and precipitation of coherent nanoscale particles leads to the best stability of SE response in aged Co₃₅Ni₃₅Al₃₀ single crystals.

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Advanced Materials Research (Volume 1040)

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119-123

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https://doi.org/10.4028/www.scientific.net/AMR.1040.119

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Online since:

September 2014

Authors:

A.S. Eftifeeva*, E.Yu. Panchenko, Yuriy Chumlyakov

Keywords:

Cyclic Stability, Disperse Particles, Single Crystal, Superelasticity, Thermoelastic Martensitic Transformation

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