Details
| Original language | English |
|---|---|
| Pages (from-to) | 1123-1131 |
| Number of pages | 9 |
| Journal | Russian physics journal |
| Volume | 55 |
| Issue number | 10 |
| Publication status | Published - 16 Mar 2013 |
| Externally published | Yes |
Abstract
Using Co35Ni35Al30 (at.%)single crystals oriented along the [011]-axis, the influence of ageing at 673 K for 0.5 h in free state and under loading in compression on the temperature dependence of critical stresses of formation of L10-martensite, yield stress of the B2-phase, temperature interval of superelasticity, and stress hysteresis is investigated. Ageing of these single crystals in free state and under loading is found to result in strengthening of the high-temperature B2-phase, widening of the temperature interval within which superelasticity is observed, and a nearly threefold decrease in the width of the stress hysteresis compared to the quenched state. It is shown for the first time that stress-assisted aged [011]-oriented Co35Ni35Al30 single crystals possess lower critical stress levels of stress-induced martensitic transformation at T < 473 K, a higher yield stress of the austenite phase and a higher starting temperature of the B2-L10 martensitic transformations upon cooling by ΔMs ~ 40 K than those aged in free state.
Keywords
- ageing under loading, cyclic stability, disperse particles, single crystals, superelasticity, thermoelastic martensitic transformations
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Russian physics journal, Vol. 55, No. 10, 16.03.2013, p. 1123-1131.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - The effect of ageing of the [011]-oriented Co35Ni35Al30 single crystals in free state and under loading on their functional properties
AU - Panchenko, E. Yu
AU - Chumlyakov, Yu I.
AU - Maier, H.
AU - Kanafieva, A. S.
AU - Kirillov, V. A.
N1 - Funding information: This work has been supported by funding within the Federal Target Program, State Contract Nos. 14.740.11.0258 and 16.740.11.0462, and an RFBR grant No. 12-08-00573.
PY - 2013/3/16
Y1 - 2013/3/16
N2 - Using Co35Ni35Al30 (at.%)single crystals oriented along the [011]-axis, the influence of ageing at 673 K for 0.5 h in free state and under loading in compression on the temperature dependence of critical stresses of formation of L10-martensite, yield stress of the B2-phase, temperature interval of superelasticity, and stress hysteresis is investigated. Ageing of these single crystals in free state and under loading is found to result in strengthening of the high-temperature B2-phase, widening of the temperature interval within which superelasticity is observed, and a nearly threefold decrease in the width of the stress hysteresis compared to the quenched state. It is shown for the first time that stress-assisted aged [011]-oriented Co35Ni35Al30 single crystals possess lower critical stress levels of stress-induced martensitic transformation at T < 473 K, a higher yield stress of the austenite phase and a higher starting temperature of the B2-L10 martensitic transformations upon cooling by ΔMs ~ 40 K than those aged in free state.
AB - Using Co35Ni35Al30 (at.%)single crystals oriented along the [011]-axis, the influence of ageing at 673 K for 0.5 h in free state and under loading in compression on the temperature dependence of critical stresses of formation of L10-martensite, yield stress of the B2-phase, temperature interval of superelasticity, and stress hysteresis is investigated. Ageing of these single crystals in free state and under loading is found to result in strengthening of the high-temperature B2-phase, widening of the temperature interval within which superelasticity is observed, and a nearly threefold decrease in the width of the stress hysteresis compared to the quenched state. It is shown for the first time that stress-assisted aged [011]-oriented Co35Ni35Al30 single crystals possess lower critical stress levels of stress-induced martensitic transformation at T < 473 K, a higher yield stress of the austenite phase and a higher starting temperature of the B2-L10 martensitic transformations upon cooling by ΔMs ~ 40 K than those aged in free state.
KW - ageing under loading
KW - cyclic stability
KW - disperse particles
KW - single crystals
KW - superelasticity
KW - thermoelastic martensitic transformations
UR - http://www.scopus.com/inward/record.url?scp=84880633092&partnerID=8YFLogxK
U2 - 10.1007/s11182-013-9932-8
DO - 10.1007/s11182-013-9932-8
M3 - Article
AN - SCOPUS:84880633092
VL - 55
SP - 1123
EP - 1131
JO - Russian physics journal
JF - Russian physics journal
SN - 1064-8887
IS - 10
ER -