TY - JOUR

T1 - Raman spectroscopic evaluation of structural-phase state of titanium and zirconium pseudo-single crystals deformed in Bridgman anvils

AU - Egorova, L.

AU - Khlebnikova, Yu.

AU - Korkh, Yu.

AU - Maslova, S.

AU - Pilyugin, V.

AU - Kuznetsova, T.

N1 - The research was carried out within the state assignment of Ministry of Science and Higher Education of the Russian Federation (theme “Structure” No. 122021000033-2 and “Spin” No. 122021000036-3).

PY - 2024/5/1

Y1 - 2024/5/1

N2 - A complex study of the microstructure of titanium and zirconium pseudo-single crystals subjected to severe plastic deformation in Bridgman anvils under a pressure of 8 GPa at a temperature of 80 K has been carried out. Raman spectra of the samples deformed to different degrees show a two-phase α + ω state, which indicates the realization of the pressure-induced transition during deformation process with the retention of the ω-phase in the structure of both metals after the load removal. The quantitative ratio of α- and ω- phases in the structure of deformed metals and its change with increasing degree of deformation has been analyzed. Correlation of Raman spectroscopy results with experimental data of X-ray diffraction analysis, electron microscopic analysis, as well as literature data of calorimetry and calculated thermodynamic data by DFT method on kinetics of the reverse ω → α transformation demonstrates the efficiency of Raman spectroscopy method for estimation of the phase composition of pure metals, which experienced phase transition under loading.

AB - A complex study of the microstructure of titanium and zirconium pseudo-single crystals subjected to severe plastic deformation in Bridgman anvils under a pressure of 8 GPa at a temperature of 80 K has been carried out. Raman spectra of the samples deformed to different degrees show a two-phase α + ω state, which indicates the realization of the pressure-induced transition during deformation process with the retention of the ω-phase in the structure of both metals after the load removal. The quantitative ratio of α- and ω- phases in the structure of deformed metals and its change with increasing degree of deformation has been analyzed. Correlation of Raman spectroscopy results with experimental data of X-ray diffraction analysis, electron microscopic analysis, as well as literature data of calorimetry and calculated thermodynamic data by DFT method on kinetics of the reverse ω → α transformation demonstrates the efficiency of Raman spectroscopy method for estimation of the phase composition of pure metals, which experienced phase transition under loading.

UR - http://www.scopus.com/inward/record.url?partnerID=8YFLogxK&scp=85189937856

U2 - 10.1016/j.matchar.2024.113876

DO - 10.1016/j.matchar.2024.113876

M3 - Article

VL - 211

JO - Materials Characterization

JF - Materials Characterization

SN - 1044-5803

M1 - 113876

ER -