In-situ study of microstructural evolution during thermal treatment of 6063 aluminum alloy

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Author list: Sirichaivetkul R., Wongpinij T., Euaruksakul C., Limmaneevichitr C., Kajornchaiyakul J.

Publisher: Elsevier

Publication year: 2019

Journal: Materials Letters (0167-577X)

Volume number: 250

Start page: 42

End page: 45

Number of pages: 4

ISSN: 0167-577X

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-85064874478&doi=10.1016%2fj.matlet.2019.04.120&partnerID=40&md5=32c10909dc8b08b7d363ceb316cfe2d8

Languages: English-Great Britain (EN-GB)

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Abstract

The present study reports microstructural observation during thermal treatment of 6063 aluminum alloy. Microscopic investigation employing low-energy electron and X-ray photoemission electron techniques was conducted. Work function pertaining thereto such techniques was analyzed. During the thermal treatment representing homogenization of the alloy, as-cast intermetallics transform morphologically from initial β-AlFeSi to α-Al(FeMn)Si. The transformation is governed by elemental diffusion between the as-cast intermetallics and the aluminum matrix and by reversible wetting of grain boundaries. These lead to formation of discrete and globular particles of α-Al(FeMn)Si all over the aluminum matrix. This in-situ study reveals that the phase transformation is not taken place by nucleation of α-Al(FeMn)Si onto surfaces of β-AlFeSi. © 2019 Elsevier B.V.

Keywords

6063 aluminum alloy, Intermetallics