In:
Izvestiya vysshikh uchebnykh zavedenii. Fizika, Tomsk State University, , No. 9 ( 2020), p. 132-140
Abstract:
The effect of the γ'- and β-phase particles on the thermoelastic γ-α' martensitic transformation (MT) during cooling/heating and under stress was studied under tension and compression on the [001]-oriented single crystals of Fe-28%Ni-17%Co-11.5%Al-2.5%Ti (at.%) alloy. The effect of the aging regime on the Ms temperature was shown. Maximum increase in the Ms temperature by 100 K was found with the simultaneous precipitation of the γ'- and β-phase particles after two-stage aging of 4+4h at 873 K, in comparison with single-stage aging for 8h. In crystals with γ' and γ'+β-phases particles the difference (asymmetry) of the stresses for the stress-induced γ-α' MT σcr and value α = d σcr/ dT under tension and compression were not observed. The absence of asymmetry of the σ cr and value α = d σcr/ dT are due to close values of the shape memory effect (SME) and superelasticity (SE) under tension and compression. The values of SME and SE were decreased when β-phase particles are precipitated.
Type of Medium:
Online Resource
ISSN:
0021-3411
Uniform Title:
Влияние термической обработки и способа деформации на функциональные и механические свойства [001]-монокристаллов сплава FeNiCoAlTi
DOI:
10.17223/00213411/63/9
DOI:
10.17223/00213411/63/9/132
Language:
Unknown
Publisher:
Tomsk State University
Publication Date:
2020
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