Morphologies of primary Al3Fe in Bridgman solidification and TIG weld traversing of hypereutectic Al-Fe alloys

被引：0

作者：

Liang, D. ^{[1
]}

Jones, H. ^{[1
]}

机构：

[1] Univ of Sheffield, Sheffield, United Kingdom

来源：

Materials Science and Engineering A | 1993年 / A173卷 / 1-2期

关键词：

Aluminum alloys - Composition effects - Eutectics - Metallographic microstructure - Morphology - Welding;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

This study indicates that the final morphology of primary Al3Fe in Bridgman solidification and TIG weld traversing of Al-Fe alloys is dependent on both the growth velocity and alloy concentration. With an increase in growth velocity, the morphology changes from clustered and microfaceted to being plate-like, finally becoming needle-like with or without a star-like transverse section. The initial morphology of plate-like primary Al3Fe is a needle-like dendritic form with a star-like transverse section behind the tip. A route for the formation of the plate-like primary Al3Fe from such needle-like dendrite tips is proposed.

引用

页码：109 / 114