Radial Dependences of the Phase Composition, Nanohardness, and Young's Modulus for Ti-2 wt % Fe Alloy after High-Pressure Torsion

被引：0
作者：
Gornakova, A. S. [1 ]
Prokofjev, S. I. [1 ]
Afonikova, N. S. [1 ]
Tyurin, A. I. [2 ]
Kilmametov, A. R. [3 ]
Korneva, A. V. [4 ]
Straumal, B. B. [1 ]
机构：
[1] Russian Acad Sci, Osipyan Inst Solid State Phys, Chernogolovka 142432, Russia
[2] Derzhavin Tambov State Univ, Res Inst Nanotechnol & Nanomat, Tambov 392000, Russia
[3] Sorbonne Paris Nord Univ, Proc & Mat Sci Lab, F-93430 Villetaneuse, France
[4] Polish Acad Sci, Aleksander Krupkowski Inst Met & Mat Sci, PL-30059 Krakow, Poland
来源：
PHYSICAL MESOMECHANICS | 2024年 / 27卷 / 06期
基金：
俄罗斯科学基金会;
关键词：
titanium alloys; high-pressure torsion; nanoindentation; hardness; Young's modulus; phase transformations; influence of the initial microstructure; TITANIUM-ALLOYS; TRANSFORMATIONS; TRANSITION; DIAGRAMS; ALPHA; METAL; BETA;
D O I：
10.1134/S1029959924060018
中图分类号：
O3 [力学];
学科分类号：
08 ; 0801 ;
摘要：
The specimens of Ti-2 wt % Fe alloy were annealed at three different temperatures, in the beta-Ti, alpha-Ti + beta-Ti and alpha-Ti + TiFe fields of the Ti-Fe phase diagram, then water quenched and subjected to high-pressure torsion (HPT). The X-ray diffraction analysis showed that the main phase in all annealed specimens was the alpha phase (more than 90%), while the main phase after HPT was the omega phase. Hardness H and Young's modulus E were determined by nanoindentation at the center, in the middle of the radius, and near the edge of each specimen. It was found that the H and E values were different for specimens annealed at different temperatures and depended on the radial coordinate of the indentation region. The maximum H values were obtained in the middle of the radius of the specimens. The E values of all specimens decreased from the center to the edge, reaching very low values. The paper discusses structure transformations during HPT, the behavior of the radial dependences of H and E, and probable causes of a strong decrease in E values.
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收藏
页码：627 / 641
页数：15
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