Microstructural Evolution during Pressureless Sintering of Blended Elemental Ti-Al-V-Fe Titanium Alloys from Fine Hydrogenated-Dehydrogenated Titanium Powder
Abstract
:1. Introduction
2. Experimental Procedures
2.1. Materials
2.2. Press-and-Sinter
2.3. Characterization and Mechanical Testing
3. Results
3.1. Characteristics of As-Received Powders
3.2. Densification
3.3. Microstructure Observation and Compositional Analysis
3.4. Phase Determination
4. Discussion
4.1. Microporosity Formation
4.2. Macroporosity Formation
4.3. Microstructural Evaluation and Phase Transformation
4.4. Mechanical Properties
5. Conclusions
Acknowledgments
Author Contributions
Conflicts of Interest
References
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Specimen | Diffusion Type | Temperature (°C) | D0 (m2·s−1) | Q (kJ·mol−1) |
---|---|---|---|---|
β-Ti | Self diffusion | 899–1540 | 3.58 × 10−8 | 130.6 |
Al in β-Ti | Inter-diffusion | 920–1600 | 1.14 × 10−5 | 213.1 |
V in β-Ti | Inter-diffusion | 902–1543 | 3.1 × 10−8 | 134.8 |
Fe in β-Ti | Inter-diffusion | 969–1645 | 7.8 × 10−7 | 132.3 |
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Yu, C.; Cao, P.; Jones, M.I. Microstructural Evolution during Pressureless Sintering of Blended Elemental Ti-Al-V-Fe Titanium Alloys from Fine Hydrogenated-Dehydrogenated Titanium Powder. Metals 2017, 7, 285. https://doi.org/10.3390/met7080285
Yu C, Cao P, Jones MI. Microstructural Evolution during Pressureless Sintering of Blended Elemental Ti-Al-V-Fe Titanium Alloys from Fine Hydrogenated-Dehydrogenated Titanium Powder. Metals. 2017; 7(8):285. https://doi.org/10.3390/met7080285
Chicago/Turabian StyleYu, Changzhou, Peng Cao, and Mark Ian Jones. 2017. "Microstructural Evolution during Pressureless Sintering of Blended Elemental Ti-Al-V-Fe Titanium Alloys from Fine Hydrogenated-Dehydrogenated Titanium Powder" Metals 7, no. 8: 285. https://doi.org/10.3390/met7080285