β‘ Phase Precipitation in a Cold Rolled Cu-Zn Alloy under Electric Current Pulses

2011 ◽  
Vol 197-198 ◽  
pp. 692-695 ◽  
Author(s):  
Xin Li Wang ◽  
Wen Bin Dai ◽  
Yan Lu ◽  
Shi Yang He ◽  
Xiang Zhao
Keyword(s):  
Electric Current ◽  
Rolling Direction ◽  
High Density ◽  
Phase Precipitation ◽  
Β Phase ◽  
Current Pulses ◽  
Α Phase ◽  
Electric Current Pulses ◽  
Cold Rolled ◽  
Zn Alloy

β' phase precipitation in a cold rolled Cu-Zn alloy under high density electric current pulses was studied in the present work. The results showed that the precipitation of β' phase was controlled by the angle between the current direction and rolling direction. When the angle was 45º, the application of electric current could refine α phase without β' phase precipitation, while at 0º or 90º, β' phase precipitated from α phase boundaries and distributed along the rolled direction. It was proposed that the precipitation of β' phase during the application of high density electric current was determined by the electron wind force and anisotropic electrical resistivity of the grain boundaries.

Orientation Correlation during α→β Up-Transformation Induced by Electric Current Pulses in a Cu-Zn Alloy

2014 ◽  
Vol 783-786 ◽  
pp. 2406-2409
Author(s):  
Xiang Zhao ◽  
Xin Li Wang ◽  
Dong Xue Li ◽  
Wen Bin Dai
Keyword(s):  
Electric Current ◽  
Orientation Relationship ◽  
Electron Backscatter Diffraction ◽  
Current Pulses ◽  
Α Phase ◽  
Electric Current Pulses ◽  
Electron Backscatter ◽  
Backscatter Diffraction ◽  
The Relationship ◽  
Zn Alloy

In this work, the orientation of the β variants within a single parent α grain on the α→β up-transformation induced by electric current pulses in a Cu-Zn alloy was investigated. Electron backscatter diffraction (EBSD) was used to determine the relationship between the α phase and the β variants. By EBSD analysis, it was found that crystallographic variant selection was observed not only across those prior α/α grain boundaries, but also within the α grain interior. Results revealed that the orientation relationship between the α phase and the β associated with nucleation from α phase was close to the Kurdjumov-Sachs (K-S) orientation relationship, which better described the orientation relationship for α nucleation within β grains.

Effect of Electric Current Direction on Texture Evolution in a Cold Rolled Fe-3%Si Steel under Electric Current Pulses Treatment

2012 ◽  
Vol 706-709 ◽  
pp. 2366-2371 ◽  
Author(s):  
Xin Li Wang ◽  
Hong Ming Zhao ◽  
Wen Bin Dai ◽  
Xiang Zhao
Keyword(s):  
Electric Current ◽  
Recrystallization Texture ◽  
Current Flow ◽  
Texture Evolution ◽  
Rolling Direction ◽  
Current Direction ◽  
Goss Texture ◽  
Current Pulses ◽  
Electric Current Pulses ◽  
Cold Rolled

The effect of electric current on the recrystallization texture evolution with the rolling direction both parallel and perpendicular to the current flow during electric current pulses (ECP) treatment was investigated. The results showed that the exerted current direction played a great role on the formation of recrystallization texture {111}<112> and Goss texture {011}<100> at the primary stage of recrytallization induced by ECP treatment. However, with the current density increasing, the effect of current direction on texture evolution almost could be ignored and the final texture components in the two cases all are Goss texture.

scholarly journals Formation of Nanotwins in Cold-Rolled Cu-Zn Alloy by Electric Current Pulses

2011 ◽  
Vol 52 (11) ◽  
pp. 2022-2026 ◽  
Author(s):  
Wenbin Dai ◽  
Xinli Wang ◽  
Lin Zhao ◽  
Jingkun Yu
Keyword(s):  
Electric Current ◽  
Current Pulses ◽  
Electric Current Pulses ◽  
Cold Rolled ◽  
Zn Alloy

Oriented nanotwins induced by electric current pulses in Cu–Zn alloy

2007 ◽  
Vol 91 (16) ◽  
pp. 163112 ◽  
Author(s):  
X. L. Wang ◽  
Y. B. Wang ◽  
Y. M. Wang ◽  
B. Q. Wang ◽  
J. D. Guo
Keyword(s):  
Electric Current ◽  
Current Pulses ◽  
Electric Current Pulses ◽  
Zn Alloy

Segregation of lead in Cu–Zn alloy under electric current pulses

2006 ◽  
Vol 89 (6) ◽  
pp. 061910 ◽  
Author(s):  
X. L. Wang ◽  
J. D. Guo ◽  
Y. M. Wang ◽  
X. Y. Wu ◽  
B. Q. Wang
Keyword(s):  
Electric Current ◽  
Current Pulses ◽  
Electric Current Pulses ◽  
Zn Alloy

Enhanced phase transformation and variant selection by electric current pulses in a Cu–Zn alloy

2014 ◽  
Vol 29 (8) ◽  
pp. 975-980 ◽  
Author(s):  
Xinli Wang ◽  
Wenbin Dai ◽  
Rui Wang ◽  
Xinzhong Tian ◽  
Xiang Zhao
Keyword(s):  
Phase Transformation ◽  
Electric Current ◽  
Variant Selection ◽  
Current Pulses ◽  
Electric Current Pulses ◽  
Image Position ◽  
Zn Alloy

Abstract

Texture and Microstructural Evolution under Electric Current Pulses in a Fe-3%Si Steel

2011 ◽  
Vol 197-198 ◽  
pp. 1104-1108 ◽  
Author(s):  
Xin Li Wang ◽  
Hong Ming Zhao ◽  
Wen Bin Dai ◽  
Xiang Zhao
Keyword(s):  
Electric Current ◽  
Microstructural Evolution ◽  
Current Density ◽  
High Current Density ◽  
Current Direction ◽  
Direction Parallel ◽  
Current Pulses ◽  
Electric Current Pulses ◽  
Current Densities ◽  
Cold Rolled

The evolution of the recrystallization texture under high current density electric current pulses (ECP) was investigated in a cold-rolled Fe-3%Si steel sheet. Results showed that the preferred nucleation always occurred in the direction parallel to the current direction at the primary stage of recrytallization. With the increment of the current density, the effect of current direction on texture and microstructural evolution was decreased. Due to the different texture component along the layer depth under different current densities, it was also found that the recrystallization nucleation was much easier to occur from the top surface.

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