کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1571411 | 1000633 | 2011 | 7 صفحه PDF | دانلود رایگان |
Dissimilar Channel Angular Pressing (DCAP) is a severe plastic deformation technique to improve the mechanical properties of flat products by producing ultrafine grains. In this study, the changes in the microstructure and mechanical properties of 6061 Al-alloy strips deformed by various numbers of DCAP passes were investigated. Some DCAPed samples were also held at 200 °C and 350 °C to investigate the effect of post-annealing. Mechanical properties were determined by hardness and tension tests; and microstructural changes were investigated by TEM analysis. Up to a critical level of plastic strain, remarkable improvements have been observed in the strength and hardness of the severely deformed strips; and the improvements have been explained by variations in grain size, dislocation structure, and formation of subgrains.
Research Highlights
► Dissimilar Channel Angular Pressing (DCAP).
► Severe plastic deformation (SPD).
► Transmission Electron Microscopy of the 6061 Al alloy.
► Mechanical Properties of 6061 Al alloy.
Journal: Materials Characterization - Volume 62, Issue 4, April 2011, Pages 391–397