Effect of Aluminum Concentration on Damping Capacity during Annealing in AZ-Series Magnesium Alloy

Abstract:

In a previous study, the damping capacity gradually increased with increasing annealing time and temperature in AZ31. Also, at damping capacity test under similar conditions, AZ61 with a higher solute content showed a more rapid microstructure change than AZ31. In this study, it was investigated damping capacity on various aluminum concentration conditions in order to damping capacity that was influenced by microstructure and solute content. Three types such as pure Mg, AZ31 and AZ61 alloy of specimens were rolled at 673K with a rolling reduction of 30%, respectively. The annealing were conducted at various temperature and time. In this study, static recrystallization was occurred under all annealing conditions. The hardness gradually decreased until 60 minutes after the heat treatment. All annealing conditions, the damping capacity gradually increased with increasing annealing time and temperature. Especially, damping capacity and C₁ value were increased with a decreasing of solute content.

• Periodical: Materials Science Forum (Volume 941)
• Pages: 1178-1182
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.941.1178
• Online since: December 2018
• Authors: Jae Hyeon Ahn*, Ju Ho Kwak, Chang Yong Kang, Kwon Hoo Kim
• Keywords: Annealing Treatment, Damping Capacity, Magnesium Alloy, Solute Concentration, Static Recrystallization

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