Method for studying weld fusion boundary microstructure evolution in aluminum alloys

被引：0

作者：

Kostrivas, A. ^{[1
]}

Lippold, J.C. ^{[1
]}

机构：

[1] Welding and Joining Metallurgy Group, Dept. Indust., Welding Syst. Eng., Ohio State University, Columbus, OH, United States

来源：

| 2000年 / American Welding Soc, Miami, FL, United States卷 / 79期

关键词：

Aluminum alloys - Computer simulation - Crystal microstructure - Heat affected zone - Heating - Melting - Nucleation - Solidification - Temperature control;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

In this study, a melting technique was developed to simulate the fusion boundary of aluminum alloys using the Gleeble thermal simulator. Using a steel sleeve to contain the aluminum, samples were heated to incremental temperatures above the solidus temperature of a number of alloys: 2195, 5454-H34, 6061-T6 and 2219-T8. At temperatures above 640°C, solidification in Alloy 2195 occurred by the normal epitaxial nucleation and growth mechanism. Nucleation in the last three alloys was observed to be epitaxial.

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