Ultrafine grain tungsten is a promising candidate for plasma facing component applications
in future fusion reactors. The conventional press-and-sinter powder metallurgy method is a
preferred route for producing ultrafine grain tungsten from nanosize tungsten powders.
However, controlling grain growth, while simultaneously attempting to achieve maximum
densification, has been a challenge for making UGF tungsten by sintering. In this study, the
effect of processing parameters on the densification and grain growth of nano-W powders …