磷对冷轧纯铜再结晶的影响

本文研究了微量磷对冷轧纯铜再结晶的影响。当磷原子主要是溶解在铜中时,大大提高了再结晶温度,增加了再结晶激活能,阻止了立方结构的形成,改变了再结晶结构;但出氧化磷状态存在于铜中时,对以上各方面的影响就不很明显。所有样品的再结晶结构,都与加工结构中的某一种取向相同或接近,并且与主要加工结构间存在着沿<111>相差20—45°的几何关系。分析从金相及X光研究后得到的结果,认为在这种情况下,同位再结晶和选择性生长是再结晶结构形成的过程。 关键词：

THE EFFECT OF PHOSPHOROUS ON THE RECRYSTALLIZATION BEHAVIOR OF COLD-ROLLED COPPER STRIPS

The effect of small amounts of phosphorous on the recrystallization of cold-rolled (89-95.7%) copper strips was studied. It was found that phosphorous, which was mainly in solid solution with copper, greatly raised the recrystallization temperature, increased the activation energy of recrystallization and also changed the recrystallization texture by annihilating the formation of cubic texture. Phosphorous, which existed mostly in the oxidized form, however, showed no pronounced effect on the recrystallization behaviour of cold-rolled copper strips.The recrystallization textures of copper strips under different rolling and annealing conditions, resembled the original deformation textures and/or kept a geometric relationship which may be described as a rotation of 20-45° about a common <111> axis.Results obtained from metallographic and X-ray diffraction studies indicated that the development of the recrystallization texture may be suggested as a process of "re-crystallization in situ" and a process of selective growth.