Details
| Original language | English |
|---|---|
| Pages (from-to) | 2106-2113 |
| Number of pages | 8 |
| Journal | Russian physics journal |
| Volume | 59 |
| Issue number | 12 |
| Publication status | Published - 8 Apr 2017 |
Abstract
On the example of Ti49.2Ni50.8 (at.%) single crystals oriented along the [111]B2 directions, influence of aging at 673 and 823 K for 1 h under tensile and compressive load of 150 MPa was studied on the magnitude and sign of the two-way shape memory effect (TWSME). It is experimentally shown that the TWSME sign (tension/compression) and magnitude are determined by the size of disperse Ti3Ni4 particles, the character of interaction of the disperse particles with martensitic crystals, and the direction of external load application during aging. For one variant of nanodimensional Ti3Ni4 particles (d < 30 nm, stress-assisted aging at 673 K for 1 h), the TWSME makes 1.3-1.7%, and the TWSME sign is independent of the direction (tension/compression) of stress application during aging: the sample size increases upon cooling and is restored upon heating. In the Ti49.2Ni50.8 [111]B2 single crystals (with particle size d = 390 nm) during stressassisted aging at 823 K for 1 h, the TWSME magnitude and sign are determined by the direction of external loading application during aging: aging under compressive loading leads to tensile TWSME with reversible strain εTWSME = 2.4%, and aging under tensile loading leads to compressive TWSME (εTWSME =-1.2%).
Keywords
- Disperse particles, Single crystals, Stress-assisted aging, Two-way shape memory effect
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Russian physics journal, Vol. 59, No. 12, 08.04.2017, p. 2106-2113.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Special features of the two-way shape memory effect in stress-assisted aged Ti49.2Ni50.8 single crystals oriented along the [111] direction
AU - Panchenko, E. Yu
AU - Osipovich, K. S.
AU - Chumlyakov, Yu I.
AU - Eftifeeva, A. S.
AU - Maier, H.
PY - 2017/4/8
Y1 - 2017/4/8
N2 - On the example of Ti49.2Ni50.8 (at.%) single crystals oriented along the [111]B2 directions, influence of aging at 673 and 823 K for 1 h under tensile and compressive load of 150 MPa was studied on the magnitude and sign of the two-way shape memory effect (TWSME). It is experimentally shown that the TWSME sign (tension/compression) and magnitude are determined by the size of disperse Ti3Ni4 particles, the character of interaction of the disperse particles with martensitic crystals, and the direction of external load application during aging. For one variant of nanodimensional Ti3Ni4 particles (d < 30 nm, stress-assisted aging at 673 K for 1 h), the TWSME makes 1.3-1.7%, and the TWSME sign is independent of the direction (tension/compression) of stress application during aging: the sample size increases upon cooling and is restored upon heating. In the Ti49.2Ni50.8 [111]B2 single crystals (with particle size d = 390 nm) during stressassisted aging at 823 K for 1 h, the TWSME magnitude and sign are determined by the direction of external loading application during aging: aging under compressive loading leads to tensile TWSME with reversible strain εTWSME = 2.4%, and aging under tensile loading leads to compressive TWSME (εTWSME =-1.2%).
AB - On the example of Ti49.2Ni50.8 (at.%) single crystals oriented along the [111]B2 directions, influence of aging at 673 and 823 K for 1 h under tensile and compressive load of 150 MPa was studied on the magnitude and sign of the two-way shape memory effect (TWSME). It is experimentally shown that the TWSME sign (tension/compression) and magnitude are determined by the size of disperse Ti3Ni4 particles, the character of interaction of the disperse particles with martensitic crystals, and the direction of external load application during aging. For one variant of nanodimensional Ti3Ni4 particles (d < 30 nm, stress-assisted aging at 673 K for 1 h), the TWSME makes 1.3-1.7%, and the TWSME sign is independent of the direction (tension/compression) of stress application during aging: the sample size increases upon cooling and is restored upon heating. In the Ti49.2Ni50.8 [111]B2 single crystals (with particle size d = 390 nm) during stressassisted aging at 823 K for 1 h, the TWSME magnitude and sign are determined by the direction of external loading application during aging: aging under compressive loading leads to tensile TWSME with reversible strain εTWSME = 2.4%, and aging under tensile loading leads to compressive TWSME (εTWSME =-1.2%).
KW - Disperse particles
KW - Single crystals
KW - Stress-assisted aging
KW - Two-way shape memory effect
UR - http://www.scopus.com/inward/record.url?scp=85017158571&partnerID=8YFLogxK
U2 - 10.1007/s11182-017-1021-y
DO - 10.1007/s11182-017-1021-y
M3 - Article
AN - SCOPUS:85017158571
VL - 59
SP - 2106
EP - 2113
JO - Russian physics journal
JF - Russian physics journal
SN - 1064-8887
IS - 12
ER -