ABSTRACT

A quasicrystalline approximate monoclinic phase η-Al₅(Mn,Cr) with a plate-like or rod-like morphology in AA5083 aluminium alloy was investigated using transmission electron microscopy. Several types of orientation relationships (ORs) between the η-Al₅(Mn,Cr) phase and the α-Al matrix were observed and these ORs could be correlated with a rotation operation around the axis $[001{]}_{\eta }$ with an angle that is an integer times 18.5°. These multiple ORs were interpreted by utilizing an invariant deformation element model – a simplified version of three-dimensional invariant line strain analysis.

中文翻译：

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AA5083铝合金中准晶近似相η-Al5(Mn,Cr)的取向关系

摘要

使用透射电子显微镜研究了AA5083铝合金中具有板状或棒状形态的准晶近似单斜晶相η-Al _{5 (Mn,Cr)。观察到 η-Al 5} (Mn,Cr) 相和 α-Al 基体之间的几种类型的取向关系 (ORs) ，这些 ORs 可能与绕轴的旋转操作相关$[001{]}_{\eta }$角度为 18.5° 的整数倍。通过使用不变变形元素模型（三维不变线应变分析的简化版本）来解释这些多个 OR。