IN-SITU OBSERVATION OF S’PHASE IN Al-Li BASE ALLOY USING TEM SERIAL ROTATION TECHNIQUE

来源期刊：中国有色金属学报(英文版)1992年第2期

论文作者：Zhen, Liang Cui, Yuexian Sun, Dongli Yang, Dezhuang

文章页码：82 - 87

Key words：Al-Li base alloy ; s'phase ; in-situ observation; TEM

Abstract: An in situ observation of the s' phase morphology and its orientation with the matrix in an AI-Li base alloy was carried out by means of double-tilt rotating around [220]_α in a transmission electron microscope (TEM). The results show that the s' phase precipitates in the form of bundles. The units of s' phase are lath-shaped, grow along the <100>_α orientation, and have habit planes of {210}_α. Many units of the s'phase grow in the same orientation and get together to form a plate-shaped bundle of s' phase laths which lie on the {110}_α planes.