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本实验在用钨靶的连续X射线,摄出冷拔铜线的织构斑点图,据以寻出斑点强度峰植距离、宽度、(111)环上〈111〉及〈100〉纤维轴的斑点峰值比,及其分离程度等与断面减缩率的关系。目的在寻出一较简便的方法,可用以估计同一原始铜线经不同冷拔后的屈服应力,及比较不同冷拔方法的加工效率。另一方面在了解不同冷拔铜线屈服应力差异与晶体织构变化的关系,并求出不同断面减缩率时〈111〉/〈100〉取向量的比值,可据为核验范性形变中织构形成理论的定量指标。初步分析结果,表明二纤维轴上的晶粒取向量,逼近地遵从波尔兹曼形式的分布规则,即分布几率f_(hkl)∝e~(-KE)_(hkl)且E_(hkl)∝△A/A(铜线断面减缩率)。
In this experiment, the texture of the cold-drawn copper wire was taken by continuous X-ray with a tungsten target, and the distance and width of the peak intensity of the spotted fiber were found. The fiber axis of <111> and <100> The ratio of peak to peak, the degree of separation, and the reduction ratio of the cross section. Aims To find out a simpler method to estimate the yield stress of the same raw copper after different cold drawing and to compare the processing efficiency of different cold drawing methods. On the other hand, understanding the relationship between yield stress difference and crystal texture change of different cold drawn copper wires and finding the ratio of <111> / <100> The formation of theoretical quantitative indicators. The preliminary analysis results show that the grain orientation on the two fiber axes closely follows the distribution rule of the Boltzmann form, that is, the distribution probability f_ (hkl) αe ~ (-KE) _ (hkl) and E_ (hkl) Α △ A / A (reduction of copper wire section rate).