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

被引：0

作者：

Egorova, L. Yu. ^{[1
]}

Khlebnikova, Yu. V. ^{[1
]}

Korkh, Yu. V. ^{[1
]}

Maslova, S. A. ^{[1
]}

Pilyugin, V. P. ^{[1
]}

Kuznetsova, T., V ^{[1
,2
]}

机构：

[1] Russian Acad Sci, MN Miheev Inst Met Phys, Ural Branch, 18 SKovalevskaya St, Ekaterinburg 620108, Russia

[2] Ural Fed Univ, Ekaterinburg 620002, Russia

来源：

MATERIALS CHARACTERIZATION | 2024年 / 211卷

关键词：

Severe plastic deformation; Titanium and zirconium; Raman spectroscopy; Phase transformation; Metastable omega-phase; OMEGA-PHASE; PURE ZIRCONIUM; MECHANICAL-PROPERTIES; PRESSURE; TRANSFORMATION; ALPHA; DEFORMATION; MICROSTRUCTURE; EVOLUTION; SHEAR;

D O I：

10.1016/j.matchar.2024.113876

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

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 alpha + omega state, which indicates the realization of the pressure-induced transition during deformation process with the retention of the omega-phase in the structure of both metals after the load removal. The quantitative ratio of alpha- and omega- 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 omega -+ alpha transformation demonstrates the efficiency of Raman spectroscopy method for estimation of the phase composition of pure metals, which experienced phase transition under loading.

引用

页数：8

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