近年来,就材质的应力而言,无论在苏联国内还是在国外,都趋向于提高Al-Cu-Mg系合金的抗裂纹扩展能力,其采用的方法是围绕降低铁和硅杂质来提高金属纯度、修正合金元素的含量以及借助于机械热处理获得更高的静力强度. 本项研究课题测定了??16??和1163合金轧制半成品在扁平应力状态下的抗裂纹扩展能力.使1163合金中铁和硅的杂质含量降低 In recent years, in terms of material stress, both in the Soviet Union and abroad have tended to improve the crack growth resistance of Al-Cu-Mg based alloys by increasing the purity of the metal by reducing the impurities of iron and silicon , To modify the content of alloying elements and to obtain higher static strength by means of mechanical heat treatment.This research project measured the anti-crack propagation ability of the 1616 and 1163 alloy semi-finished products in the flat state of stress.The 1163 alloy Iron and silicon impurities reduced