ABBA Lab

Advanced Biomaterials for Biomedical Applications Lab

Journal

Enhancement of mechanical properties of grade 4 titanium by equal channel angular pressing with billet encapsulation
Year
2015~
Author
Yuanlong Li, Hoi Pang Ng, Hyun-Do Jung, Hyoun-Ee Kim, Yuri Estrin
Journal
Materials Letters
Vol
114
Page
144-147
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.