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Microstructural evolution and mechanical properties of Ti–5Al–5Mo–5V–3Cr alloy by heat treatment with continuous temperature gradient
- Source :
- Transactions of Nonferrous Metals Society of China. 28:273-281
- Publication Year :
- 2018
- Publisher :
- Elsevier BV, 2018.
-
Abstract
- A new high throughput heat-treatment method with a continuous temperature gradient between 600 and 700 °C was utilized on the Ti-5553 alloy (Ti–5Al–5Mo–5V–3Cr, mass fraction, %). The temperature gradient was induced by the variation of the axial section of sample, which was heated by the direct current. The variation of continuous cooling rates on the treated sample was realized by using the end quenching method. The microstructural evolution and mechanical properties under different heat treatment conditions were evaluated. The results show that the pseudo-spinodal decomposition of the alloy occurs at (617±1) °C, and the size of the precipitated α phase is around 300 nm. Moreover, the highest microhardness is obtained after the heat treatment at the pseudo-spinodal decomposition temperature for 4 h. These indicate that the high throughput method is efficient and fast to determine the phase transformation temperature and corresponding microstructural evolution of alloys.
- Subjects :
- 010302 applied physics
Quenching
Materials science
Direct current
Alloy
Thermal decomposition
Metals and Alloys
02 engineering and technology
engineering.material
021001 nanoscience & nanotechnology
Geotechnical Engineering and Engineering Geology
Condensed Matter Physics
01 natural sciences
Indentation hardness
Temperature gradient
Phase (matter)
0103 physical sciences
Materials Chemistry
engineering
Composite material
0210 nano-technology
Mass fraction
Subjects
Details
- ISSN :
- 10036326
- Volume :
- 28
- Database :
- OpenAIRE
- Journal :
- Transactions of Nonferrous Metals Society of China
- Accession number :
- edsair.doi...........eba704f49b3d6cd7dc6e686c907736be