Crystal Plasticity FEM Study on the Influence of Crystallographic Orientation in Copper Single Crystals Subjected to Equal Channel Angular Pressing

2013 ◽  
Vol 84 (12) ◽  
pp. 1258-1266
Author(s):  
Guanyu Deng ◽  
Anh Kiet Tieu ◽  
Lihong Su ◽  
Cheng Lu ◽  
Hongtao Zhu ◽  
...  
Keyword(s):  
Single Crystals ◽  
Equal Channel Angular Pressing ◽  
Crystal Plasticity ◽  
Crystallographic Orientation ◽  
Angular Pressing ◽  
Copper Single Crystals ◽  
Crystal Plasticity Fem

The Effect of the Initial Orientation on Microstructure Development of Copper Single Crystals Subjected to Equal-Channel Angular Pressing

2006 ◽  
Vol 503-504 ◽  
pp. 799-804 ◽  
Author(s):  
Hiroyuki Miyamoto ◽  
J. Fushimi ◽  
Takura Mimaki ◽  
Alexei Vinogradov ◽  
Satoshi Hashimoto
Keyword(s):  
Single Crystals ◽  
Equal Channel Angular Pressing ◽  
Crystallographic Orientation ◽  
Shear Bands ◽  
Initial Orientation ◽  
Processing Route ◽  
Microstructure Development ◽  
Angular Pressing ◽  
Copper Single Crystals ◽  
Heterogeneous Deformation

Copper single crystals were subjected to equal-channel angular pressing (ECAP) via the so-called route A and Bc, in order to examine the influence of initial crystallographic orientation and processing route on microstructure development and grain fragmentation. Microstructural changes were examined by transmission electron microscopy (TEM). The pressing via the route Bc resulted in finer microstructure for all orientations in terms of grain size, equiaxiality and orientation scattering after four passes. Effect of initial crystallographic orientation on the grain refinement was also recognized, and it might be attributed to heterogeneous deformation such as shear bands, whose formation is strongly orientation dependent. After eight passes, however, the effect of processing route and initial orientation cannot be recognized.

Deformation Structure and Crystal Orientation of Copper Single Crystals Deformed by Equal Channel Angular Pressing

2003 ◽  
Vol 426-432 ◽  
pp. 2795-2800 ◽  
Author(s):  
Hiroyuki Miyamoto ◽  
Uwe Erb ◽  
Tetsuo Koyama ◽  
Takura Mimaki ◽  
Alexei Vinogradov ◽  
...  
Keyword(s):  
Single Crystals ◽  
Equal Channel Angular Pressing ◽  
Crystal Orientation ◽  
Deformation Structure ◽  
Angular Pressing ◽  
Copper Single Crystals

Deformation Mechanisms of Single Crystals and Bicrystals Subjected to Equal-Channel Angular Pressing - Review

2009 ◽  
Vol 633-634 ◽  
pp. 511-525
Author(s):  
Wei Zhong Han ◽  
Shou Xin Li ◽  
Shi Ding Wu ◽  
Zhe Feng Zhang
Keyword(s):  
Grain Boundary ◽  
Single Crystals ◽  
Shear Deformation ◽  
Equal Channel Angular Pressing ◽  
Microstructural Evolution ◽  
Crystallographic Orientation ◽  
World Wide ◽  
Experimental Results ◽  
Deformation Mechanisms ◽  
Angular Pressing

The deformation mechanisms of various kinds of single crystals and bicrystals during the process of equal channel angular pressing (ECAP) have been paid more attention world wide. This paper reviews the recent progresses in the understanding of the deformation mechanisms of single crystals and bicrystals subjected to one-pass ECAP, and discusses the effect of initial crystallographic orientation and grain boundary on the microstructural evolution of these crystals. Based on those experimental results and analysis, it is suggested that in addition to the shear deformation along the intersection plane (IP) of ECAP die, the shear along the normal of IP also plays an important role in affecting the microstructural evolution and deformation mechanisms of these single crystals and bicrystals.

Microstructures of Aluminum and Copper Single Crystals Processed by Equal-Channel Angular Pressing

2010 ◽  
Vol 638-642 ◽  
pp. 1946-1951 ◽  
Author(s):  
Minoru Furukawa ◽  
Z. Horita ◽  
Terence G. Langdon
Keyword(s):  
Single Crystals ◽  
Equal Channel Angular Pressing ◽  
Orientation Imaging Microscopy ◽  
Orientation Imaging ◽  
Angular Pressing ◽  
Transmission Electron ◽  
Shear Theory ◽  
High Purity Aluminum ◽  
Copper Single Crystals ◽  
Shear Factors

High purity aluminum (Al) and copper (Cu) single crystals of different crystallographic orientations were processed for one pass by equal-channel angular pressing (ECAP). The deformed structures were examined using orientation imaging microscopy (OIM) and transmission electron microscopy (TEM). This paper examines the experimental results in terms of the values of the shear factors based on simple shear theory.

Microstructure and texture development of copper single crystals deformed by equal-channel angular pressing

2004 ◽  
Vol 84 (4) ◽  
pp. 235-243 ◽  
Author(s):  
H. Miyamoto ◽  
U. Erb ◽  
T. Koyama ◽  
T. Mimaki ◽  
A. Vinogradov ◽  
...  
Keyword(s):  
Single Crystals ◽  
Equal Channel Angular Pressing ◽  
Texture Development ◽  
Angular Pressing ◽  
Copper Single Crystals

Application of Equal-Channel Angular Pressing to Aluminum and Copper Single Crystals

2007 ◽  
Vol 539-543 ◽  
pp. 2853-2858 ◽  
Author(s):  
Minoru Furukawa ◽  
Z. Horita ◽  
Terence G. Langdon
Keyword(s):  
Electron Microscopy ◽  
Single Crystals ◽  
Equal Channel Angular Pressing ◽  
Orientation Imaging Microscopy ◽  
Orientation Imaging ◽  
Angular Pressing ◽  
Transmission Electron ◽  
High Purity Aluminum ◽  
Copper Single Crystals ◽  
Crystallographic Orientations

This paper describes experiments in which high purity aluminum (Al) and copper (Cu) single crystals of different crystallographic orientations were processed for one pass by equal-channel angular pressing (ECAP). The deformed structures were examined using optical microscopy (OM), orientation imaging microscopy (OIM) and transmission electron microscopy (TEM). The results for Al single crystals are compared with those for Cu single crystals.

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