journal article·2015-04-03

New understanding of the role of coincidence site lattice boundaries in abnormal grain growth of aluminium alloy

Chang-Soo Park, Hyung-Ki Park, Hyung-Seok Shim, Tae-Wook Na, Chan-Hee Han, Nong-Moon Hwang

Philosophical Magazine Letters· Volume 95· Issue 4
Publisher page

Abstract

The sequential microstructure evolution of abnormal grain growth (AGG) in the aluminium alloy (AA5052) was investigated to analyse the migration behaviour of coincidence site lattice (CSL) boundaries, which are known to play an important role in inducing AGG. The sequential evolution showed that CSL boundaries tend to disappear more slowly than general boundaries at the growth front of abnormally growing grains. Especially, the migration rate of Σ9 boundaries was noticeably low, which is contrary to the previous suggestions.
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Research context

OpenAlex topics: Aluminum Alloy Microstructure Properties · Microstructure and mechanical properties · Metallurgy and Material Forming

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Funding

POSCO Technical Research Laboratories

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