“…Therefore, there is anisotropy in the damping capacity of the wrought magnesium alloys. Since the contradiction between strength and damping capacity of magnesium alloys restricts the research and application of high-strength and high-damping magnesium alloys [28-30], the alloy can be extended to a wide range of applications according to the specific requirements of strength and damping properties in different directions of the material in practical applications. Figure 9 Force diagram of the damping sample.…”
Effect of texture on the damping capacity of ZK60 magnesium alloy is investigated through compression experiments with a deformation of 10% at room temperature. It is found that both the dislocation networks, twins and the basal texture intensity affect the damping capacity. At the low strain amplitudes, the dislocation networks and twins are dominant and the damping capacity decreases with the increase in the dislocation networks and twins. At the high strain amplitudes, the basal texture intensity is dominant and the damping capacity decreases with the increase in the basal texture intensity. Based on the anisotropy of the damping capacity of the wrought magnesium alloys, this research provides provide a direction for the study of high-strength and high-damping magnesium alloys.
“…Therefore, there is anisotropy in the damping capacity of the wrought magnesium alloys. Since the contradiction between strength and damping capacity of magnesium alloys restricts the research and application of high-strength and high-damping magnesium alloys [28-30], the alloy can be extended to a wide range of applications according to the specific requirements of strength and damping properties in different directions of the material in practical applications. Figure 9 Force diagram of the damping sample.…”
Effect of texture on the damping capacity of ZK60 magnesium alloy is investigated through compression experiments with a deformation of 10% at room temperature. It is found that both the dislocation networks, twins and the basal texture intensity affect the damping capacity. At the low strain amplitudes, the dislocation networks and twins are dominant and the damping capacity decreases with the increase in the dislocation networks and twins. At the high strain amplitudes, the basal texture intensity is dominant and the damping capacity decreases with the increase in the basal texture intensity. Based on the anisotropy of the damping capacity of the wrought magnesium alloys, this research provides provide a direction for the study of high-strength and high-damping magnesium alloys.
“…At 325 °C, the damping capacity of the alloy was close to that of pure magnesium, but the yield strength was more than three times that of pure magnesium. Rui-long Niu et al [ 100 ] studied the Mg-0.6Zr alloy’s microstructure after adding the Y element to it. They found that with the increase in Y element content (mass fraction from 1.0% to 5.0%), the grain size of the α-Mg matrix decreased obviously.…”
As the lightest structural metal material, magnesium alloys possess good casting properties, high electrical and thermal conductivity, high electromagnetic shielding, and excellent damping properties. With the increasing demand for lightweight, high-strength, and high-damping structural materials in aviation, automobiles, rail transit, and other industries with serious vibration and noise, damping magnesium alloy materials are becoming one of the important development directions of magnesium alloys. A comprehensive review of the progress in this field is conducive to the development of damping magnesium alloys. This review not only looks back on the traditional damping magnesium alloys represented by Mg-Zr alloys, Mg-Cu-Mn alloys, etc. but also introduces the new damping magnesium materials, such as magnesium matrix composites and porous magnesium. But up to now, there have still been some problems in the research of damping magnesium materials. The effect of spiral dislocation on damping is still unknown and needs to be studied; the contradiction between damping performance and mechanical properties still lacks a good balance method. In the future, the introduction of more diversified damping regulating methods, such as adding other elements and reinforcements, optimizing the manufacturing method of damping magnesium alloy, etc., to solve these issues, will be the development trend of damping magnesium materials.
“…In precision structures without dampers, metal-based damping materials show their uniqueness. Magnesium alloys have low density and high damping properties, and their development in damping materials has attracted much attention [2,3].…”
The effects of different heat treatment processes on the morphology and damping properties of long-period stacking order (LPSO) phase in Mg-4.9Zn-8.9Y-xMn alloys were studied. The microstructure analysis shows that the as-cast second phase presents a vein-shaped distribution at the grain boundary, and the heat treatment temperature has a significant effect on the morphology of the second phase. After heat treatment at 540 ℃, the LPSO phase at the grain boundary changes into rod-like; When the heat treatment temperature is 550 ℃, the LPSO phase changes into bulk or flocculent, and part of the LPSO phase melts into the matrix.In this process, the addition of Mn also has an important influence on the morphology transformation of LPSO phase. An appropriate amount of Mn can divide the bulk LPSO into several small parts during heat treatment, thus forming a large number of dispersed LPSO phases. In general, heat treatment and Mn elements can affect the mechanical and damping properties of the alloy. Heat treatment can reduce the mechanical properties of the alloy, but effectively improve the damping properti es of the alloy. With the addition of Mn into the alloy, the mechanical properties of the alloy can be improved without significantly reducing the damping.
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