Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1574999 | Materials Science and Engineering: A | 2014 | 8 Pages |
Abstract
Experiments were conducted to determine whether it is feasible to process commercial purity (CP) titanium (grade 1) by equal-channel angular pressing (ECAP) at room temperature with a die having an internal angle of 90°. Billets were successfully processed through up to 4 passes using a pressing speed of 3.5 mm sâ1. These results appear to represent the first successful processing of CP-Ti at room temperature using a 90° die. Processing by ECAP through 4 passes reduced the grain size from an initial value of ~25 µm in the unprocessed condition to an equiaxed grain size of ~150 nm. The results show that the hardness and tensile strength are increased significantly after ECAP and the material exhibits excellent elongations up to ~45% to 48% in tensile testing at room temperature. The success in processing CP-Ti at room temperature with a 90° die provides opportunities for incorporating additional processing steps in order to gain further grain refinement and strength enhancement.
Related Topics
Physical Sciences and Engineering
Materials Science
Materials Science (General)
Authors
Xicheng Zhao, Xirong Yang, Xiaoyan Liu, Chuan Ting Wang, Yi Huang, Terence G. Langdon,