- Tytuł:
- Phase Transformations in Ti-15Mo Investigated by in situ Electrical Resistance
- Autorzy:
-
Zháňal, P.
Harcuba, P.
Šmilauerová, J.
Stráský, J.
Janeček, M.
Smola, B.
Hájek, M. - Powiązania:
- https://bibliotekanauki.pl/articles/1402155.pdf
- Data publikacji:
- 2015-10
- Wydawca:
- Polska Akademia Nauk. Instytut Fizyki PAN
- Tematy:
- 64.70.kd
- Opis:
- In this study phase transformations in metastable beta Ti-15Mo alloy were investigated by an in situ electrical resistance measurement in a wide range of temperatures from -196°C to 850°C. Different temperature ranges of the evolution of electrical resistance were correlated with underlying phase transformations. In the low temperature range, stage I (from -196°C to 220°C) the decrease of electrical resistance with increasing temperature is caused by the dissolution of ω_{ath} (formed during quenching by athermal shuffle transformation) which is accompanied by the relaxation of lattice strain, while the diffusional assisted growth of ω_{iso} in the range from 220°C to 380°C (stage II) is the main mechanism causing the increase of resistance. Another decrease of the resistance in the range from 380°C to 550°C (stage III) is explained by the dissolution or transformation of ω_{iso}. The increase of resistance above 550°C (stage IV) is related to the growth of α-phase particles. The fully reversible character of ω_{ath} growth and dissolution during heating and cooling in the stage I up to 100°C was confirmed by temperature cycling during repeated in situ resistance runs from RT. Pre-ageing of samples at 300°C promotes the formation of ω_{iso} particles. Subsequently, ω_{ath} particles are not created, which is fully consistent with electrical resistance measurements. The presence of ω_{ath} and the orientation relationship between ω and β were identified by the electron diffraction.
- Źródło:
-
Acta Physica Polonica A; 2015, 128, 4; 779-782
0587-4246
1898-794X - Pojawia się w:
- Acta Physica Polonica A
- Dostawca treści:
- Biblioteka Nauki
Artykuł