The structure of interphase boundaries in Al-CuAl2 curved eutectic crystals

被引：18

作者：

Rmong, G.G. ^{[1
]}

Rhodes, C.G. ^{[1
]}

机构：

[1] Science Center, Rockwell International, Thousand Oaks,CA,91360, United States

来源：

Metallurgical and Materials Transactions B: Process Metallurgy and Materials Processing Science | 1974年 / 5卷 / 12期

关键词：

High resolution transmission electron microscopy - Crystal structure - Eutectics - Ternary alloys - Copper alloys - Metallurgy;

D O I：

10.1007/BF02643871

中图分类号：

学科分类号：

摘要：

Direction lly solidified crystals were grown in which the Al-CuAl2 interphase boundary was uniformly misoriented by 6-8 deg with respect to the usual crystallographic relations interface (Formula presented.). The rrays of features then found in the boundary were shown to be ledges by transmission electron microscopy. These ledges could move in the boundary plane during heating-stage experiments. The broad faces of the ledges were the low-energy orient tions mentioned above and were rotated with respect to the macroscopic ihterphase boundary plane by bout 7 deg. From these observations, it is concluded that the misoriented interphase boundaries in Al-CuAl2 curved eutectic crystals are best described in terms of regions of good fit separated by diffusion-glide (DG) ledges. © 1974, American Society for Metals, The Melallurgical Society of AIME.

引用

页码：2507 / 2513