| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 7989544 | International Journal of Refractory Metals and Hard Materials | 2018 | 4 Pages |
Abstract
A face-centered-cubic (FCC) hafnium (Hf) in bulk was fabricated by a combination of high-energy ball milling and spark plasma sintering (SPS). The hexagonal-close-packed (HCP) Hf powder as the raw material was transformed into FCC phase during ball milling, and the HCP to FCC transformation also occurred when applying SPS on the ball milled powder. The effects of grain size, impurities and structural instability introduced during high-energy ball milling process on the HCP to FCC phase transformation were discussed. In addition, due to the grain boundary strengthening and second phase strengthening, the hardness of the bulk FCC Hf was greatly increased to above 1200â¯Hv.
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
Kun Luo, Song Ni, Min Song,