Microstructure of AM60 Magnesium Alloy by High-Pressure Solution and Subsequent Atmospheric-Pressure Aging Treatment

Abstract:

As-cast AM60 magnesium alloy was solid dissolved with exercising different pressures (atmospheric-pressure, 3, 4 and 5 Gpa) to it and subsequently aged under atmospheric pressure. The microstructure of the products was characterized by optical microscope and X-ray diffraction. The results show that, compared with exercising atmospheric-pressure during solution treatment, exercising high-pressure during this process causes that the α-Mg grains of the subsequent aging alloy are more fine and uniform, while the β-Mg₁₇Al₁₂ phases transform into fine particles and aggregate to form gobbets or strips. In addition, increasing the exercising pressure promotes the precipitation of the β-Mg₁₇Al₁₂ phases of the aging alloy.

• Periodical: Applied Mechanics and Materials (Volumes 182-183)
• Pages: 315-318
• DOI: https://doi.org/10.4028/www.scientific.net/AMM.182-183.315
• Online since: June 2012
• Authors: Wen Yan Duan
• Keywords: Aging, Magnesium Alloy, Microstructure, Solid Solution

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