Second Phase Particles and Mechanical Properties of 2618 Aluminum Alloy Ring

Abstract:

2618 aluminum alloy has been used in aerospace structural parts, but the coarse second phase particles agglomerated in the alloy usually result in poor mechanical properties. In this paper, the morphology and distribution of the second phase particles and the mechanical properties of 2618 aluminum alloy ring were investigated, and the fracture morphology is observed by scanning electron microscope (SEM) and analyzed by energy dispersive X-ray spectroscopy (EDS). The result show that the mechanical properties in the axial direction are lower than those in the circumferential direction. It is evidentially shown that the agglomeration of Al₉FeNi intermetallic particles and magnesium oxides in the fracture is the main reason for the poor mechanical properties in the axial direction.

• Periodical: Materials Science Forum (Volume 1035)
• Pages: 212-216
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.1035.212
• Online since: June 2021
• Authors: Jing Ze Jiang*, Bao Li, Bi Cheng Yang
• Keywords: Aluminum Alloys, Mechanical Properties, Second Phase Particle

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