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应用取向分布函数(ODF)研究分析了Er对Al-Mg-Si-Cu合金板材织构的影响。结果表明,铝合金轧制板材主要存在{100}<011>旋转立方织构,{111}<110>、{111}<112>黄铜R织构,常规织构B、S、C织构很弱,其原因与合金中含有大量弥散的金属间化合物粒子密切相关。固溶处理后,Er含量为0.1%的铝合金中,织构主要为Brass织构和Cube+ND25织构,PSN形核是合金再结晶的形核机制之一;Er含量增加到0.2%后,合金织构是较弱的Brass织构,PSN形核减弱。Er的加入引起基体晶格变化,降低铝合金板材的层错能,阻碍了交滑移的进行。
The effect of Er on the texture of Al-Mg-Si-Cu alloy sheet was analyzed by using the orientation distribution function (ODF). The results show that there are mainly {100} <011> rotating cubic texture, {111} <110>, {111} <112> brass R textures, and conventional textures B, Weak, the reason for the alloy containing a large number of dispersed intermetallic particles are closely related. After the solution treatment, the texture of Al alloy with 0.1% Er content is mainly Brass texture and Cube + ND25 texture, and the nucleation of PSN is one of the nucleation mechanisms of recrystallization. When the Er content increases to 0.2% , Alloy texture is weaker Brass texture, PSN nucleation weakened. The addition of Er causes the matrix lattice change, reduces the stacking fault energy of the aluminum alloy sheet and hinders the progress of cross-slip.