Effect of the velocity of equal-channel angular pressing on the formation of the structure of pure aluminum

2008 ◽  
Vol 106 (4) ◽  
pp. 411-417 ◽  
Author(s):  
K. V. Ivanov ◽  
E. V. Naidenkin
Keyword(s):  
Equal Channel Angular Pressing ◽  
Pure Aluminum ◽  
Angular Pressing

Micro-Embossing Process in Ultrafine-Grained Pure Aluminum Processed by Equal-Channel Angular Pressing with Elevated Temperature

2019 ◽  
Vol 821 ◽  
pp. 244-249
Author(s):  
Qian Su ◽  
Jie Xu ◽  
Lei Shi ◽  
De Bin Shan ◽  
Bin Guo
Keyword(s):  
Equal Channel Angular Pressing ◽  
Deformation Temperature ◽  
Pure Aluminum ◽  
Confocal Scanning Laser Microscopy ◽  
Electron Backscattered Diffraction ◽  
Angular Pressing ◽  
Ultrafine Grained ◽  
Scanning Laser Microscopy ◽  
Confocal Scanning ◽  
Confocal Scanning Laser

Micro-embossing tests were performed on ultrafine-grained pure Al processed by equal-channel angular pressing (ECAP) with 100 μm width of female die at different deformation temperature ranging from 298 K to 523 K under a force of 5 kN. The filling height, surface topography and microstructure of the cross section were measured by confocal scanning laser microscopy (CSLM), scanning electron microscopy (SEM) and electron backscattered diffraction (EBSD), respectively. The effects of deformation temperature on formability of ultrafine-grained (UFG) pure Al during micro-embossing were analyzed. The results show that increase in deformation temperature can improve the formability of UFG pure Al on micro-embossing. Micro hot embossing of UFG pure aluminum is characterized by the rib sidewall, surface quality, and fully transferred patterns, which shows ultrafine-grained pure Al has potential application in micro-forming.

Characterization of creep properties and creep textures in pure aluminum processed by equal-channel angular pressing

2008 ◽  
Vol 56 (10) ◽  
pp. 2307-2317 ◽  
Author(s):  
Megumi Kawasaki ◽  
Irene J. Beyerlein ◽  
Sven C. Vogel ◽  
Terence G. Langdon
Keyword(s):  
Equal Channel Angular Pressing ◽  
Pure Aluminum ◽  
Creep Properties ◽  
Angular Pressing

scholarly journals Effect of Equal-Channel Angular Pressing on Pitting Corrosion of Pure Aluminum

2012 ◽  
Vol 2012 ◽  
pp. 1-9 ◽  
Author(s):  
Injoon Son ◽  
Hiroaki Nakano ◽  
Satoshi Oue ◽  
Shigeo Kobayashi ◽  
Hisaaki Fukushima ◽  
...  
Keyword(s):  
Equal Channel Angular Pressing ◽  
Pitting Corrosion ◽  
Corrosion Potential ◽  
Pure Aluminum ◽  
Electrochemical Techniques ◽  
Oxide Films ◽  
Angular Pressing ◽  
Ecap Process ◽  
Pitting Corrosion Resistance ◽  
Al Oxide

The effect of equal-channel angular pressing (ECAP) on the pitting corrosion of pure Al was investigated using electrochemical techniques in solutions containing 0.1 m mol·dm−3of Na2SO4and 8.46 mol·dm−3of NaCl (300 ppm Cl−) and followed by surface analysis. The potential for pitting corrosion of pure Al was clearly shifted in the noble direction by the ECAP process indicating that this process improves resistance to pitting corrosion. The time dependence of corrosion potential and the anodic potential at 1 A·m−2revealed that the rate of formation of Al oxide films increased due to a decrease in the grain size of the Al after ECAP. Since there exists a negligible amount of impurity precipitates in pure Al, the improvement in pitting corrosion resistance of pure Al by ECAP appears to be attributable to an increase in the rate of formation of Al oxide films.

Sign in / Sign up

Export Citation Format

Share Document