Identification of monoclinic θ-phase dispersoids in a 6061 aluminium alloy. (2nd April 2016)

• Record Type: Journal Article
• Authors: Buchanan, Karl; Ribis, Joël; Garnier, Jérôme; Colas, Kimberly
• Is Part Of: Philosophical magazine letters. Volume 96:Number 4(2016)
• Page Start: 121
• Page End: 131
• Publication Date: 2016-04-02
• Subjects: AA6061 -- dispersoids -- Al7Cr -- Al13Cr2 -- Al45Cr7 -- θ-phase; Condensed matter -- Periodicals; Physics -- Periodicals; Solid state physics -- Periodicals; Physique -- Périodiques; 530.41
• DOI: 10.1080/09500839.2016.1162911
• Languages: English
• ISSNs: 0950-0839

Abstract

Abstract: Intermetallic dispersoids play an important role in controlling the 6xxx alloy series' grain distribution and increasing the alloy's toughness. The dispersoid distribution in a 6061 aluminium alloy (Al–Mg–Si) was analysed by transmission electron microscopy, selected area diffraction and energy-dispersive X-ray spectroscopy. The dispersoids had three unique crystal structures: simple cubic, body-centred cubic and monoclinic ( C 2 /m ). While the SC and BCC dispersoids have been well characterized in the literature, a detailed analysis of monoclinic dispersoids has not been presented. Therefore, the current work discusses the chemical composition, crystal structure and morphology of the monoclinic dispersoids.