在A6电工铝导线的冷拉拔过程中织构的演变

发布时间：2018-04-05 07:11

本文选题：金属材料　切入点：织构演变　出处：《材料研究学报》2015年07期

【摘要】：用宏微观织构分析方法研究了A6铝导线冷拉拔过程中的织构演变。结果表明,这种导线在拉拔过程中形成以111和100丝织构为主的形变织构,随着变形量的增大100织构减少、111织构增强。形变织构沿导线的径向呈不均匀分布:在中等形变量情况下,从导线表层至中心织构由强100织构(体积分数~52%)过渡到强111织构(体积分数~55%);在高应变量情况下,径向织构梯度减弱,通体形成强111织构(各层的111织构体积分数超过70%)。同时,在拉拔过程中导线心部的硬度比表层的高,表明织构对导线强度及沿径向分布梯度起重要作用。用调整拉拔工艺可对位错密度和织构及其分布进行优化,进而提高导线的强度和导电性能。
[Abstract]:The texture evolution of A 6 aluminum wire during cold drawing was studied by means of macro and micro texture analysis.The results show that the deformation texture of the wire is mainly composed of 111 and 100 wire textures during drawing, and increases with the increase of 100 textures.The deformation texture distributes inhomogeneously along the radial direction of the wire: in the case of medium shape variable, the texture from the surface layer to the center of the conductor changes from strong 100 texture (volume fraction 52cm) to strong 111 texture (volume fraction 555mm); in the case of high strain variable,The radial texture gradient is weakened and the whole body forms a strong 111 texture (the integral number of 111 textures in each layer is more than 70).At the same time, the hardness of the center of the conductor is higher than that of the surface during drawing, which indicates that the texture plays an important role in the strength and radial distribution gradient of the conductor.The dislocation density, texture and distribution can be optimized by adjusting drawing process, and the strength and conductivity of conductors can be improved.
【作者单位】：国网辽宁省电力有限公司电力科学研究院;东北大学材料各向异性与织构教育部重点实验室;
【基金】：国家电网公司科技部资助项目DKYKJ[2012]006-2~~
【分类号】：TG146.21;TG389

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