Microstructure Evolution of Copper during Continuous Extrusion Process
Received:February 22, 2011            
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DOI:DOI:10.3969/j.issn.1007-7545.2011.05.010
KeyWord:Continuous extrusion;Copper;Microstructure evolution
              
AuthorInstitution
WANG Jun 大连交通大学连续挤压工程研究中心
YUN Xin-bing 大连交通大学连续挤压工程研究中心
LI Bing 大连交通大学连续挤压工程研究中心
FAN Zhi-xin 大连交通大学连续挤压工程研究中心
SONG Bao-yun 大连交通大学连续挤压工程研究中心
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Abstract:
      The microstructure of copper during the process of continuous extrusion was studied with optical microscopes. The results indicated that grain in pass rolled zone and friction shear zone were stretched along the distortion orientation, the grain in upsetting zone turned into cell, shear bands and substructures were produced in sticking shear zone, the grain became fibrous and experienced a dynamic recrystallization during right-angle bending, the grain experienced a complete dynamic recrystallization and formed into fine recrystallized grain in expansion forming zone.
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