Effect of extrusion parameters on microstructure, mechanical properties and damping capacities of Mg-Y-Zn-Zr alloy

Ma, Yajie; Liu, Chuming; Huang, Yingjie; Jiang, Shunong; Gao, Yonghao; Wan, Yingchun; Chen, Zhiyong

doi:10.1016/j.jallcom.2022.168122

Cited by 10 publications

(3 citation statements)

References 56 publications

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“…As a consequence of the rapid cooling rate after extrusion, the α-Mg matrix was in an oversaturated solid-solution state. Here, Gd and Y play an essential role in solid-solution strengthening, which can be determined by the equation below [ 41 ]:

…”

Section: Resultsmentioning

confidence: 99%

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The Development of a High-Strength Mg-10.3Gd-4.4Y-0.9Zn-0.7Mn Alloy Subjected to Large Differential-Thermal Extrusion and Isothermal Aging

Wang,

Wang

et al. 2023

Materials

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The large differential-thermal extrusion (LDTE) process, a novel approach for efficiently fabricating a high-strength Mg-10.3Gd-4.4Y-0.9Zn-0.7Mn (wt.%) alloy, is introduced in this work. Unlike typical isothermal extrusion processes, where the ingot and die temperatures are kept the same, LDTE involves significantly higher ingot temperatures (~120 °C) compared to the die temperature. For high-strength Mg-RE alloys, the maximum isothermal extrusion ram speed is normally limited to 1 mm/s. This research uses the LDTE process to significantly increase the ram speed to 2.0 mm/s. The LPTE-processed alloy possesses a phase composition that is similar to that of isothermal extruded alloys, including α-Mg, 14H-type long-period stacking ordered (LPSO) and β-Mg5(Gd, Y) phases. The weakly preferentially oriented α-Mg grains in the LDTE-processed alloy have <101¯0>Mg//ED fibrous and <0001>Mg//ED anomalous textures as their two main constituents. After isothermal aging, high quantitative densities of prismatic β′ and basal γ′ precipitates are produced, which have the beneficial effect of precipitation hardening. With a yield tensile strength of 344 MPa, an ultimate tensile strength of 488 MPa, and an elongation of 9.7%, the alloy produced by the LDTE process exhibits an exceptional strength–ductility balance, further demonstrating the potential of this method for efficiently producing high-strength Mg alloys.

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…”

Section: Resultsmentioning

confidence: 99%

“…Here, Gd and Y play an essential role in solid-solution strengthening, which can be determined by the equation below [41]:…”

Section: Tensile Properties Of As-extruded Vwzm10411 Alloysmentioning

confidence: 99%

The Development of a High-Strength Mg-10.3Gd-4.4Y-0.9Zn-0.7Mn Alloy Subjected to Large Differential-Thermal Extrusion and Isothermal Aging

Wang,

Wang

et al. 2023

Materials

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“…After that, dislocation pile-up will lead to a decrease in damping performance. Ma et al [30] found that the G-L theory can explain the damping mechanism well under the critical temperature by controlling the extrusion parameters. They demonstrated that the mechanical properties and damping properties of alloys with low temperature and low extrusion rates can reach the application standard.…”

Section: Dislocation Damping Mechanism In Magnesium Alloysmentioning

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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A Review of Magnesium Alloys as Structure–Function Integrated Materials

Jiang,

Hu,

et al. 2024

Acta Metall. Sin. (Engl. Lett.)

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Effect of extrusion parameters on microstructure, mechanical properties and damping capacities of Mg-Y-Zn-Zr alloy

Cited by 10 publications

References 56 publications

The Development of a High-Strength Mg-10.3Gd-4.4Y-0.9Zn-0.7Mn Alloy Subjected to Large Differential-Thermal Extrusion and Isothermal Aging

The Development of a High-Strength Mg-10.3Gd-4.4Y-0.9Zn-0.7Mn Alloy Subjected to Large Differential-Thermal Extrusion and Isothermal Aging

Research Progress on the Damping Mechanism of Magnesium Alloys

A Review of Magnesium Alloys as Structure–Function Integrated Materials

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