Effect of precipitates on mechanical and damping properties of Mg–Zn–Y–Nd alloys

Feng, Huicheng; Liu, Haipeng; Cao, Hong; Yang, Yang; Xu, Yong; Guan, Jinyu

doi:10.1016/j.msea.2015.04.092

Cited by 48 publications

(13 citation statements)

References 22 publications

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“…Under this condition, the second-phase particle pinning dislocations inhibit the dislocation motion and result in the strengthening effect. The strength and elongation of the alloy increased gradually under the combined action of refinement strengthening and second phase strengthening [ 31 ]. Above 3 wt % Gd load, the (Mg, Zn) 3 Gd phase owns larger grains, more trigeminal boundary, and coarser edges, thus, leading the serious microsegregation.…”

Section: Resultsmentioning

confidence: 99%

Microstructures, Mechanical Properties, and Corrosion Behavior of As-Cast Mg–2.0Zn–0.5Zr–xGd (wt %) Biodegradable Alloys

et al. 2018

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The Mg–Zn–Zr–Gd alloys belong to a group of biometallic alloys suitable for bone substitution. While biocompatibility arises from the harmlessness of the metals, the biocorrosion behavior and its origins remain elusive. Here, aiming for the tailored biodegradability, we prepared the Mg–2.0Zn–0.5Zr–xGd (wt %) alloys with different Gd percentages (x = 0, 1, 2, 3, 4, 5), and studied their microstructures and biocorrosion behavior. Results showed that adding a moderate amount of Gd into Mg–2.0Zn–0.5Zr alloys will refine and homogenize α-Mg grains, change the morphology and distribution of (Mg, Zn)3Gd, and lead to enhancement of mechanical properties and anticorrosive performance. At the optimized content of 3.0%, the fishbone-shaped network, ellipsoidal, and rod-like (Mg, Zn)3Gd phase turns up, along with the 14H-type long period stacking ordered (14H-LPSO) structures decorated with nanoscale rod-like (Mg, Zn)3Gd phases. The 14H-LPSO structure only exists when x ≥ 3.0, and its content increases with the Gd content. The Mg–2.0Zn–0.5Zr–3.0Gd alloy possesses a better ultimate tensile strength of 204 ± 3 MPa, yield strength of 155 ± 3 MPa, and elongation of 10.6 ± 0.6%. Corrosion tests verified that the Mg–2.0Zn–0.5Zr–3.0Gd alloy possesses the best corrosion resistance and uniform corrosion mode. The microstructure impacts on the corrosion resistance were also studied.

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Section: Resultsmentioning

confidence: 99%

Microstructures, Mechanical Properties, and Corrosion Behavior of As-Cast Mg–2.0Zn–0.5Zr–xGd (wt %) Biodegradable Alloys

et al. 2018

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“…Pure magnesium and magnesium alloys experience dislocation damping. Currently, the Granato-Lücke (G-L) model is commonly used to explain the dislocation damping mechanism [27]. This model considers that both ends of the dislocation line in the crystal are strongly pinned by immobile defects such as grain boundaries, precipitation phases, or dislocation network nodes and that the intermediate portion is pinned by impurity atoms.…”

Section: Dislocation Damping In Magnesium Alloysmentioning

confidence: 99%

Effect of alloying elements on magnesium alloy damping capacities at room temperature

Wan

et al. 2019

Int J Miner Metall Mater

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Alloying is a good approach to increasing its strength but leads to a reduction of damping to pure magnesium. Classifying the alloying characteristics of various alloying elements in magnesium alloys and their combined effects on the damping and mechanical properties of magnesium alloys is important. In this paper, the properties of the Mg-0.6wt%X binary alloys were analyzed through strength measurements and dynamic mechanical analysis. The effects of foreign atoms on solid-solution strengthening and dislocation damping were studied comprehensively. The effect of solid solubility on damping capacity can be considered from two perspectives: the effect of single solid-solution atoms on the damping capacities of the alloy, and the effect of solubility on the damping capacities of the alloy. The results provide significant information that is useful in developing high-strength, high-damping magnesium alloys. This study will provide scientific guidance regarding the development of new types of damping magnesium alloys.

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“…M agnesium alloy has a hexagonal close-packed crystal structure, which fascinates scholars because of its low density, high specific strength and elastic modulus, and high recycling efficiency [1][2][3][4][5] . The requirements for saving energy and environmental protection have promoted the rapid growth of magnesium alloy applications.…”

mentioning

confidence: 99%

Single and double aging treatments on Mg97Zn1Y2 alloy

Wan

Wang

et al. 2019

China Foundry

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The development of magnesium alloys was limited due to the low absolute strength and poor corrosion resistance. It was found that the optimal performance could not be achieved in some alloys by a single quenching and aging treatment, but could be achieved after a graded aging or multiple-stage aging heat treatment. The Mg97Zn1Y2 alloy was prepared and subjected to single and double aging treatments. Single aging was carried out at 250 ºC for 6 to 15 h. For double aging, the first step was performed the same as the single aging. The second step was performed at 350 ºC for 12 h. The microstructure and properties of the alloy with single and double aging were analyzed by means of hardness measurement, optical microscopy, scanning electron microscopy, X-ray diffraction, and polarization curve measurements. Results show that the precipitated nanoscale phases are formed during aging, and evenly distributed in the matrix. Compared with the single aging treatment, the hardness and corrosion resistance of the alloy are further improved due to the double aging treatment.

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Effect of precipitates on mechanical and damping properties of Mg–Zn–Y–Nd alloys

Cited by 48 publications

References 22 publications

Microstructures, Mechanical Properties, and Corrosion Behavior of As-Cast Mg–2.0Zn–0.5Zr–xGd (wt %) Biodegradable Alloys

Microstructures, Mechanical Properties, and Corrosion Behavior of As-Cast Mg–2.0Zn–0.5Zr–xGd (wt %) Biodegradable Alloys

Effect of alloying elements on magnesium alloy damping capacities at room temperature

Single and double aging treatments on Mg97Zn1Y2 alloy

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