Effect of Transverse Grain Boundary on Microstructure, Texture and Mechanical Properties of Drawn Copper Wires

In the present study, microstructure and texture of drawn copper wires with a large number of transverse grain boundaries have been characterized and their mechanical properties have been analyzed. The results show that the texture evolution is accelerated by transverse grain boundary and the satura...

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Veröffentlicht in:Journal of materials science & technology 2014-02, Vol.30 (2), p.184-191
Hauptverfasser: Chen, Jian, Ma, Xiaoguang, Yan, Wen, Xia, Feng, Fan, Xinhui
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creator Chen, Jian
Ma, Xiaoguang
Yan, Wen
Xia, Feng
Fan, Xinhui
description In the present study, microstructure and texture of drawn copper wires with a large number of transverse grain boundaries have been characterized and their mechanical properties have been analyzed. The results show that the texture evolution is accelerated by transverse grain boundary and the saturation value 60% of volume fraction of 〈111〉 fiber texture component is reached rapidly with increasing strain. For the microstructure of drawn wires with a large number of transverse grain boundaries, the critical strain, where lamellar boundaries form, is less than that for wires with equiaxed grains or columnar grains (all grain boundaries parallel to axis direction). Since transverse grain boundary accelerates grain subdivision and dislocation density increases rapidly in drawn wires with a large number of transverse grain boundaries, there are a higher flow stress and a higher work hardening rate.
doi_str_mv 10.1016/j.jmst.2013.04.018
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source Elsevier ScienceDirect Journals; Alma/SFX Local Collection
subjects BOUNDARIES
Cold drawing
Copper
DISLOCATIONS
Grain boundaries
Grains
MECHANICAL PROPERTIES
Microstructure
MICROSTRUCTURES
PROPERTIES
Surface layer
Texture
TEXTURES
Transverse grain boundary
Ultimate tensile strength
WIRE
临界应变
力学性能
加工硬化率
显微组织
晶界
柱状晶粒
织构
铜导线
title Effect of Transverse Grain Boundary on Microstructure, Texture and Mechanical Properties of Drawn Copper Wires
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