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配制了２６１８ 及２６１８ ＋ Ｓｃ＋ Ｚｒ 两种不同成分的合金， 采用硬度测试初步研究了微量Ｓｃ 和Ｚｒ对２６１８ 合金冷轧板材退火后再结晶行为的影响， 并采用金相显微镜和透射电镜观察了合金不同状态下的显微组织结构。结果表明： 加入Ｓｃ 和Ｚｒ 后生成的Ａｌ３（Ｓｃ ，Ｚｒ） 质点细小弥散， 与基体共格， 可钉扎位错， 稳定亚结构， 阻碍亚晶长大及晶界的迁移， 从而抑制合金的再结晶， 使含Ｓｃ 和Ｚｒ 的合金再结晶温度比参比的２６１８ 合金的再结晶温度提高约２００ ℃； 亚晶聚合机制对合金的再结晶发挥了作用。
The effects of trace amounts of Sc and Zr on the recrystallization behavior of 2618 alloy cold-rolled sheet were investigated by hardness test. The effects of the addition of trace amounts of Sc and Zr on the recrystallization behavior of the annealed 2618 alloy cold-rolled sheet were investigated. The microstructure of the alloy was studied by metallographic microscope and transmission electron microscope Microstructure in different states. The results show that the Al3 (Sc, Zr) particles formed after the addition of Sc and Zr are finely dispersed and coherent with the matrix, which can pin the dislocation, stabilize the substructure and impede the growth of subgrain and grain boundary, Recrystallization increased the recrystallization temperature of the alloy containing Sc and Zr by about 200 ° C from the recrystallization temperature of the reference 2618 alloy. The sub-crystalline polymerization mechanism played a role in the recrystallization of the alloy.