期刊名称：International Journal of Innovative Research in Science, Engineering and Technology
印刷版ISSN：2347-6710
电子版ISSN：2319-8753
出版年度：2016
卷号：5
期号：3
页码：3568
DOI：10.15680/IJIRSET.2016.0503193
出版社：S&S Publications
摘要：Equal Channel Angular pressing is a unique Severe Plastic Deformation Process for producing ultra-finegrain sized materials. Experiments are conducted on 99.5% pure Copper samples manufactured through PowderMetallurgy route and sinter extruded. The experiments are carried out on cylindrical samples having an aspect ratio of 1(Height/Diameter). The sinter-extruded samples are then subjected to ECAP punch and die set-up having a channelangle of 110o in a 100 ton hydraulic press. As the samples are subjected to ECAP one after the other, the first samplewill not realize the influence of back pressure and the subsequent samples are influenced by back pressure since the firstsample acts as a back pressurizing agent for the subsequent samples that undergo ECAP. The influence of back pressureduring ECAP helps in prevention of Chevron crack in the sample along with enhancement in mechanical andmetallurgical properties such as pore closure, increase in hardness and increased density.
