Study on Damping Capacities of ZK60-2.8Nd Magnesium Alloy

Liu, X L; Zhang, W Y; Wu, Yuanzhi

doi:10.1088/1757-899x/220/1/012016

Cited by 1 publication

(1 citation statement)

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“…At high temperature, the better damping performance with increasing Si content is attributed to the higher dislocation density and grain refinement. Liu et al [67] found that the solid solution state of a ZK60-2.8Nd Mg alloy possessed higher strain-independent damping compared to the as-cast and extruded states. On the one hand, the dynamic recrystallization during hot extrusion decreased the density of movable dislocations within the grains; on the other hand, the solid solution treatment increased the grain size slightly, and the dislocations were farther apart between the strong pinning points, improving the damping properties.…”

Section: Dislocation Densitymentioning

confidence: 99%

Research Progress on the Damping Mechanism of Magnesium Alloys

Wang,

Wan,

Dang

et al. 2023

Materials

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Magnesium alloys with high damping, high specific strength and low density have attracted great attention in recent years. However, the application of magnesium alloys is limited by the balance between their mechanical and damping properties. The strength and plasticity of magnesium alloys with high damping performance often cannot meet the industrial requirements. Understanding the damping mechanism of magnesium alloys is significant for developing new materials with high damping and mechanical properties. In this paper, the damping mechanisms and internal factors of the damping properties of magnesium alloys are comprehensively reviewed. Some damping mechanisms have been studied by many scholars, and it has been found that they can be used to explain damping performance. Among existing damping mechanisms, the G-L dislocation theory, twin damping mechanism and interface damping mechanism are considered common. In addition, some specific long-period stacking ordered (LPSO) phases’ crystal structures are conducive to dislocation movement, which is good for improving damping performance. Usually, the damping properties of magnesium alloys are affected by some internal factors directly, such as dislocation density, solute atoms, grain texture and boundaries, etc. These internal factors affect damping performance by influencing the dissipation of energy within the crystal. Scholars are working to find novel damping mechanisms and suitable solute atoms that can improve damping performance. It is important to understand the main damping mechanisms and the internal factors for guiding the development of novel high-damping magnesium alloys.

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Section: Dislocation Densitymentioning

confidence: 99%