Abstract
Commercial purity titanium (Grade 4) was processed by encapsulation-aided equal-channel angular pressing. Encapsulation in a copper cartridge made it possible to carry out the process repeatedly, up to 8 passes, at a relatively low temperature of 300 C. Extremely high values of yield strength and tensile strength close to record literature values for this titanium grade and matching, or even surpassing, the levels for conventional Ti-6Al-4V alloy were obtained. A bi-modal grain structure observed may be responsible for a favorable combination of strength and ductility the processed material exhibits.
| Original language | English |
|---|---|
| Pages (from-to) | 144-147 |
| Number of pages | 4 |
| Journal | Materials Letters |
| Volume | 114 |
| DOIs | |
| State | Published - 2014 |
Bibliographical note
Funding Information:Support of this research through the World Class University (WCU) program of National Research Foundation of Korea funded by the Ministry of Education, Science and Technology ( R31-2008-000–10075 ) as well as Grant #14.A12.31.0001 of the Russian Ministry for Education and Science is gratefully acknowledged. Useful discussions with Dr. Sung Min Chung (Dentium Co. Ltd.) and Prof. Hyoung-Seop Kim (Postech) as well as technical assistance of Mingzhe Bian are gratefully appreciated. The authors acknowledge the use of facilities in the Monash Centre for Electron Microscopy (MCEM).
Keywords
- Biomaterial
- Equal-channel angular pressing
- Metal forming and shaping
- Structural
- Titanium