MATEC Web Conf.
Volume 67, 2016International Symposium on Materials Application and Engineering (SMAE 2016)
|Number of page(s)||5|
|Section||Chapter 5 Metallurgical Engineering|
|Published online||29 July 2016|
Evolution of Iron-containing Compounds in Al-Cu Alloys during Heat Treatment
Key laboratory for Anisotropy and Texture of Materials; (Ministry of Education) Northeastern University, Shenyang, 110004, China
The evolution of iron-containing compounds in Al-Cu 206 cast alloy during solution treatment has been investigated. Results show that platelet β-Fe and Chinese script α-Fe are the two iron-containing compounds in as-cast condition. Little change is observed on β-Fe during solution treatment. However, fine blocky post β-Fe begins to form on α-Fe when solution treated at 520°C for 8hrs. When soaking time is extended to 24 hrs, α–Fe is found to decompose to fine branches while post β-Fe present as clusters on these branches. Al-Cu-Mg-Si Q phase is observed to form at the edge of decomposed α-Fe, possibly the result of Si from decomposed α-Fe.
© The Authors, published by EDP Sciences, 2016
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