Formation of High-Angle Dislocation Boundaries in Drawn Single Crystal Copper Wires
Formation of High-Angle Dislocation Boundaries in Drawn Single Crystal Copper Wires
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DOI：
10.2320/matertrans.m2014458
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发表时间：
2015-06
影响因子：
1.2
通讯作者：
Jian Chen;Xiaoguang Ma;Jun Li;Yu-hong Yao;Wen Yan;Xin-hui Fan
中科院分区：
文献类型：
--
作者：
Jian Chen;Xiaoguang Ma;Jun Li;Yu-hong Yao;Wen Yan;Xin-hui Fan
用电子背散射衍射研究了拉制单晶铜线材中大角度晶界的形成机理。高角度晶界的形成有两个阶段：低应变时，高角度晶界对应于不同纤维织构组分之间的界面，而高应变时，高角度晶界开始出现在同一纤维织构内。两阶段相变的临界应变取决于平行于单晶丝轴向的初始取向。随着应变的增加，大角度晶界形成的这种差异与变形的均匀性有关。[doi：10.2320/matertrans.M2014458]
The formation mechanism of the high angle boundaries in drawn single crystal copper wires was investigated using electron backscattering diffraction. Two stages for formation of high angle boundaries were found: at low strains, the high angle boundaries correspond to the boundaries between different fiber texture components referred to the drawn direction of wires while the high angle boundaries start to present within one fiber texture at high strains. The critical strain for the two-stage transformation depends on the initial orientations parallel to axis direction of single crystal wires. Such difference in formation of high angle boundaries with increasing strain is associated with the deformation homogeneity. [doi:10.2320/matertrans.M2014458]