Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7963898 | Journal of Nuclear Materials | 2016 | 8 Pages |
Abstract
This work aims to investigate the effects of confined cold rolling on the evolution of microstructure, hardness, and helium irradiation performance of high purity tungsten (W). Using a final rolling temperature of 450 °C, W samples were severely deformed by confined cold rolling up to equivalent strains (εeq) of 1.6 and 3.3. Experimental results indicate that the average grain size of W specimens processed by confined cold rolling has been greatly reduced, and the rolled W samples with εeq â¼3.3 do not show an “ideal texture” of (001)[110] which is the expected texture of bcc metals processed by conventional cold rolling. The irradiation resistance against 60 keV He+ ions with up to a dose of 1.5 Ã 1022 ions·mâ2 of the rolled W is compared to that of the as-received W. Results show that, due to an improvement of the metal's ductility, blister bursting with a partially opened lid forms on the surface of the rolled W, whereas blister bursting with a fully opened lid forms on the surface of the as-received W.
Related Topics
Physical Sciences and Engineering
Energy
Nuclear Energy and Engineering
Authors
Zhe Chen, Wenjia Han, Jiangang Yu, Laszlo Kecskes, Kaigui Zhu, Qiuming Wei,