Details
| Original language | English |
|---|---|
| Pages (from-to) | 721-728 |
| Number of pages | 8 |
| Journal | Russian physics journal |
| Volume | 54 |
| Issue number | 6 |
| Publication status | Published - 17 Nov 2011 |
| Externally published | Yes |
Abstract
Using Co35Ni35Al30 (at. %) single crystals, the effect of temperature and duration of aging on the development of thermoelastic B2-L10-martensitic transformations during heating/cooling is studied. It is found out that at room temperature these single crystals are in the B2-phase and contain a small volume fraction (about 2%) of the plastic γ-phase. In the aged single crystals, in the B2-matrix, Co-rich particles with hcp- and fcc-lattices and metastable Ni2Al particles precipitate, whose size is determined by the temperature and duration of aging. It is shown that aging gives rise decreased temperature of martensitic transformations. At the aging temperatures T ≥ 673 K there is a sharp increase in the temperature hysteresis and a total suppression of thermoelastic B2-L10-martensitic transformations during heating/cooling and under loading. A thermodynamic description of the starting temperature of martensitic transformations Ms as a function of microstructure of the aged single crystals particle size and interparticle spacing is proposed.
Keywords
- dispersed particles, ferromagnetic single crystals, temperature hysteresis, thermoelastic martensitic transformations
ASJC Scopus subject areas
- Physics and Astronomy(all)
- General Physics and Astronomy
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In: Russian physics journal, Vol. 54, No. 6, 17.11.2011, p. 721-728.
Research output: Contribution to journal › Article › Research › peer review
}
TY - JOUR
T1 - Characteristic features of development of thermoelastic transformations in aged single crystals of a CoNiAl ferromagnetic alloy
AU - Panchenko, E. Yu
AU - Chumlyakov, Yu I.
AU - Maier, H.
AU - Kirillov, V. A.
AU - Kanafieva, A. S.
N1 - Funding information: The work has been supported by the funding from the FTP, State Contract No. 14.740.11.0258 ?? 17.09.2010.
PY - 2011/11/17
Y1 - 2011/11/17
N2 - Using Co35Ni35Al30 (at. %) single crystals, the effect of temperature and duration of aging on the development of thermoelastic B2-L10-martensitic transformations during heating/cooling is studied. It is found out that at room temperature these single crystals are in the B2-phase and contain a small volume fraction (about 2%) of the plastic γ-phase. In the aged single crystals, in the B2-matrix, Co-rich particles with hcp- and fcc-lattices and metastable Ni2Al particles precipitate, whose size is determined by the temperature and duration of aging. It is shown that aging gives rise decreased temperature of martensitic transformations. At the aging temperatures T ≥ 673 K there is a sharp increase in the temperature hysteresis and a total suppression of thermoelastic B2-L10-martensitic transformations during heating/cooling and under loading. A thermodynamic description of the starting temperature of martensitic transformations Ms as a function of microstructure of the aged single crystals particle size and interparticle spacing is proposed.
AB - Using Co35Ni35Al30 (at. %) single crystals, the effect of temperature and duration of aging on the development of thermoelastic B2-L10-martensitic transformations during heating/cooling is studied. It is found out that at room temperature these single crystals are in the B2-phase and contain a small volume fraction (about 2%) of the plastic γ-phase. In the aged single crystals, in the B2-matrix, Co-rich particles with hcp- and fcc-lattices and metastable Ni2Al particles precipitate, whose size is determined by the temperature and duration of aging. It is shown that aging gives rise decreased temperature of martensitic transformations. At the aging temperatures T ≥ 673 K there is a sharp increase in the temperature hysteresis and a total suppression of thermoelastic B2-L10-martensitic transformations during heating/cooling and under loading. A thermodynamic description of the starting temperature of martensitic transformations Ms as a function of microstructure of the aged single crystals particle size and interparticle spacing is proposed.
KW - dispersed particles
KW - ferromagnetic single crystals
KW - temperature hysteresis
KW - thermoelastic martensitic transformations
UR - http://www.scopus.com/inward/record.url?scp=81955164068&partnerID=8YFLogxK
U2 - 10.1007/s11182-011-9675-3
DO - 10.1007/s11182-011-9675-3
M3 - Article
AN - SCOPUS:81955164068
VL - 54
SP - 721
EP - 728
JO - Russian physics journal
JF - Russian physics journal
SN - 1064-8887
IS - 6
ER -