ABSTRACT

The occurrence of grain boundary precipitates was investigated with respect to the crystallographic orientation of the adjacent grains in extruded AA6110, AA6063 and AA6061 alloys brought to T6 temper. It was found that the requirement for grain boundary precipitate formation is for the adjacent grains to have <100>Al directions or {100}Al planes parallel to the grain boundary plane. The highest density of grain boundary precipitates was present when this requirement was fulfilled by both adjacent grains.

中文翻译：

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Al-Mg-Si(-Cu)合金晶界析出物形成与相邻晶粒取向的关系

摘要

在挤压的 AA6110、AA6063 和 AA6061 合金达到 T6 回火时，根据相邻晶粒的结晶取向研究晶界析出物的出现。发现晶界析出物形成的要求是相邻晶粒具有<100>Al方向或平行于晶界面的{100}Al面。当两个相邻晶粒都满足此要求时，存在最高密度的晶界析出物。