The Effect of Surface Layer on the Deformation Process of Copper Single Crystals

1978 ◽  
Vol 45 (4) ◽  
pp. 1320-1326 ◽  
Author(s):  
Teizo Tabata ◽  
Hiroshi Fujita ◽  
Hiroshi Kusuhashi
Keyword(s):  
Surface Layer ◽  
Single Crystals ◽  
Deformation Process ◽  
Copper Single Crystals ◽  
Effect Of Surface

Local and Global Effects in Texture and Microstructure Observed after Channel-Die Compression of Copper Single Crystals and after Cross-Rolling of Copper Sheets

2005 ◽  
Vol 105 ◽  
pp. 321-326
Author(s):  
Jan Pospiech ◽  
Zdzislaw Jasieński ◽  
M. Ostafin ◽  
Robert A. Schwarzer
Keyword(s):  
Single Crystals ◽  
Deformation Process ◽  
Structural Characteristics ◽  
Rolling Direction ◽  
Local Analysis ◽  
Orientation Measurement ◽  
Individual Crystal ◽  
Copper Single Crystals ◽  
High Dynamics ◽  
Deformation Step

The change of the deformation path leads to destabilization of the substructure and affects the texture of the deformed metal. The observed changes of texture and microstructure are, as a rule, significant and their characteristics depend on the geometry of the deformation process. Previous investigations on copper (and copper alloy) samples after deformation by rolling and channel-die compression were based on X-ray pole figure measurements and on observations in the light microscope. Hereby only global texture and structural characteristics have been obtained. The present study is mainly based on measurements of individual crystal orientations performed by ACOM (Automated Crystal Orientation Measurement, “Automated EBSD”) in the SEM which enables a precise local analysis of the investigated phenomena. For the channel-die experiments, (1 1 2)[1 1 -1] and (1 1 2)[1 -1 0] oriented copper single crystals have been used. After pre-deformation, a second deformation step has been carried out in transverse direction. The {1 1 2}<1 1 0> orientations are destabilized by channel-die compression, and clusters of layers develop which are composed of complementary {1 1 0}<1 1 2> components. The deformation process in polycrystalline sheets after rotating the rolling direction leads again to a distinct disintegration of the microstructure and destabilization of the b fiber. This process of microstructure reorganization after pre-deformation is fast and of high dynamics.

Anomalous modulus change in γ -irradiated copper single crystals

1975 ◽  
Vol 25 (1) ◽  
pp. 57-59 ◽  
Author(s):  
S. Okuda ◽  
H. Mizubayashi
Keyword(s):  
Single Crystals ◽  
Copper Single Crystals

On the formation of deformation bands in fatigued copper single crystals

2002 ◽  
Vol 82 (16) ◽  
pp. 3129-3147 ◽  
Author(s):  
S. X. Li ◽  
X. W. Li ◽  
Z. F. Zhang ◽  
Z. G. Wang ◽  
K. Lu
Keyword(s):  
Single Crystals ◽  
Deformation Bands ◽  
Copper Single Crystals

Subsurface structural evolution and wear lip formation on copper single crystals under unlubricated sliding conditions

Wear ◽  
2018 ◽  
Vol 410-411 ◽  
pp. 210-221 ◽  
Author(s):  
S. Yu Tarasov ◽  
A.V. Chumaevskii ◽  
D.V. Lychagin ◽  
A.Y. Nikonov ◽  
A.I. Dmitriev
Keyword(s):  
Single Crystals ◽  
Structural Evolution ◽  
Copper Single Crystals

Early stages of fatigue in copper single crystals

1969 ◽  
Vol 19 (161) ◽  
pp. 899-924 ◽  
Author(s):  
S. J. Basinski ◽  
Z. S. Basinski ◽  
A. Howie
Keyword(s):  
Single Crystals ◽  
Early Stages ◽  
Copper Single Crystals
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