Download or read book Nanostructures and Enhanced Properties in Tungsten and Its Alloys Processed by Equal Channel Angular Pressing written by and published by . This book was released on 2002 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: In this connection, in the frame of the third period of the present project there have been conducted experimental investigations, aimed at equal channel angular pressing (ECAP) optimization of the investigated W and the 90W-8Ni-2Fe alloy. The problem of this task consists in enhancing workability of these hard-to-deform materials and achieving large strains, The influence of the accumulated strain degree the thickness of protection casing, the rate and strain temperatures on grain size and homogeneity of the obtained structure have been investigated as parameters, determining ECAP results. ECAP has been realized on route C, which turns out to be the most effective route for the given case, as it has been found out at first stages of the project.