Development of Mg–Zn–Y–Zr casting magnesium alloy with high thermal conductivity

Баженов, В. Е.; Колтыгин, А. В.; Sung, Ming-Je; Park, S.H.; Tselovalnik, Yu. V.; Stepashkin, Andrey A.; Rizhsky, А. A.; Belov, Mikhail V.; Белов, В. Д.; Malyutin, K.V.

doi:10.1016/j.jma.2020.11.020

Cited by 53 publications

(8 citation statements)

References 34 publications

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“…Due to the rise in the solid solution of alloying elements in the α‐Mg matrix, the SE dramatically lowers when alloying elements are added in greater amounts, as shown in Figure below. The volume difference rate between solute and Mg atoms (ΔV/V Mg ) [ 127,128 ] is one of several factors that, in general, define the amount to which solute atoms affect the SE of magnesium alloys. The severity of the Mg lattice distortion increases with the value of (ΔV/V Mg ).…”

Section: Methodologies Used For Enhancing Emi Sementioning

confidence: 99%

Historical Progress in Electromagnetic Interference Shielding Effectiveness of Conventional Mg Alloys Leading to Mg‐Li‐Based Alloys: A Review

Ashraf,

Guo,

et al. 2023

Adv Eng Mater

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Magnesium‐alloy (Mg‐alloy) materials have attracted considerable attention recently due to their potential applications in electromagnetic interference (EMI) shielding. EMI shielding is a technique to prevent unwanted electromagnetic fields from interfering with the regular operation of electronic devices and systems. EMI shielding is essential for electronics, communication, computers, aerospace, and defence, where high performance and reliability are required. A material’s EMI shielding effectiveness (SE) depends on several factors: its conductivity, magnetic permeability, reflectivity, absorption, and multiple scattering. Mg‐alloys have several advantages over other conventional shielding materials, such as Al‐alloys. These alloys have a lower density, higher specific strength and stiffness, and a higher damping capacity. Mg‐alloys also have high conductivity and magnetic permeability, which can enhance the SE of the material. Moreover, through various methods, such as alloying, heat treatment, surface treatment, and composite fabrication, Mg alloys can be modified to improve their SE and other properties. This review summarizes the recent progress and challenges in developing Mg‐alloy materials for EMI shielding applications. We discuss the effects of different factors on Mg‐alloys’ SE, such as composition, microstructure, frequency, and thickness. Also, we discuss the importance of Mg‐Li alloys and why they are better electromagnetic shielding materials than conventional Mg alloys. Finally, we provide some perspectives and suggestions for future research directions.This article is protected by copyright. All rights reserved.

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Section: Methodologies Used For Enhancing Emi Sementioning

confidence: 99%

Historical Progress in Electromagnetic Interference Shielding Effectiveness of Conventional Mg Alloys Leading to Mg‐Li‐Based Alloys: A Review

Ashraf,

Guo,

et al. 2023

Adv Eng Mater

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“…Для определения механических свойств сплавов изготавливали прутковые заготовки литьем в форму из графита [24]. Из заготовок вытачивали 6 цилиндрических образцов диаметром 5 мм (тип III, № 7 по ГОСТ 1497-84) для испытаний на растяжение, которые проводились на универсальной испытательной машине 5569 (Instron, США) с бесконтактным видеоэкстензометром типа AVE (Instron, США).…”

Section: материалы и методики исследованияunclassified

Investigation of castability, mechanical, corrosion properties and flammability of ML-OPB and EWZ43 magnesium alloys

Баженов

Baranov

Lyskovich

et al. 2023

Izv.VUZ. Tsvet. Met.

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Magnesium alloys are usually considered as structural materials when the weight reduction is important - in aircraft and space industry for example. In recent years, there has been an increase in the use of new generation ignition-proof high-strength magnesium alloys in the design of aircraft parts. The properties of new ignition-proof casting magnesium alloys ML-OPB (Mg–6.7Y–2.6Zn–0.5Zr–0.35Ce– 0.35Yb; wt.%) and EWZ43 (Mg–3.8Y–4.4Nd–0.6Zr–0.6Zn; wt.%) were investigated and compared with properties of commercial magnesium alloys. The microstructure of investigated alloys in the as-cast condition comprises of a magnesium solid solution and a significant amount of eutectic. Heat treatment according to the T6 mode results in change in the eutectic phase’s morphology and also to their partial dissolution in the magnesium matrix. Long-term high-temperature holding, simulating operating conditions (500 h at 300 °C), leads to the formation of precipitates along the grain boundaries in both alloys, significantly reducing the mechanical properties. During the oxidation of the samples, it was established that the main components that involved into the oxide film and provides the protective properties of the alloys is Y, Nd and Yb. The investigated alloys have a high strength, which is not lower than that of the ML10 alloy. At the same time, the advantage of the ML-OPB alloy is a high elongation at fracture, while the EWZ43 alloy is characterized by high strength. The corrosion rate of the investigated alloys exceeds the corrosion rate of known commercial ML10 and AZ91 alloys, which implies the need for additional protection against corrosion of investigated alloys. At the same time, the castability of ML-OPB and EWZ43 alloys is no lower than that of most commercial magnesium alloys. An oxide film with high Y content and high protective properties is formed when the alloys interact with the sand mold bonded with furan resin. The ignition temperature of the investigated alloys is 100–150 °C higher than that of the ML10 alloy. The flammability test of alloys in the flame of a gas burner, made on cone samples and typical aircraft castings «bracket», showed that ML-OPB and EWZ43 alloys are almost non-flammable under the conditions of experiment.

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“…The ingots were cut into bars (20 mm × 150 mm × 20 mm), and one surface of each bar was ground. Subsequently, SSHT was performed at 300, 350, 400, 450, and 500 • C for 3,8,13,18,23,28,33,38,43, and 48 h, followed by quenching in water. The last two SSHT temperatures were applied only to MgZn2Ga2.…”

Section: Heat Treatment Response Analysismentioning

confidence: 99%

“…The samples for the tensile tests were prepared by casting ingots (340 mm × 50 mm × 32 mm) into a graphite mold [23]. Cylindrical samples (diameter: 5 mm; length: 60 mm) were lathe-machined, and tensile tests were performed on both as-casted and heat-treated alloy samples using an 5569 universal testing machine (Instron, Glenview, IL, USA).…”

Section: Mechanical Propertiesmentioning

confidence: 99%

Effect of Heat Treatment on the Mechanical and Corrosion Properties of Mg–Zn–Ga Biodegradable Mg Alloys

Баженов

Lyskovich

et al. 2021

Materials

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Mg alloys have mechanical properties similar to those of human bones, and have been studied extensively because of their potential use in biodegradable medical implants. In this study, the influence of different heat treatment regimens on the microstructure and mechanical and corrosion properties of biodegradable Mg–Zn–Ga alloys was investigated, because Ga is effective in the treatment of disorders associated with accelerated bone loss. Solid–solution heat treatment (SSHT) enhanced the mechanical properties of these alloys, and a low corrosion rate in Hanks’ solution was achieved because of the decrease in the cathodic-phase content after SSHT. Thus, the Mg–4 wt.% Zn–4 wt.% Ga–0.5 wt.% Y alloy after 18 h of SSHT at 350 °C (ultimate tensile strength: 207 MPa; yield strength: 97 MPa; elongation at fracture: 7.5%; corrosion rate: 0.27 mm/year) was recommended for low-loaded orthopedic implants.

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Development of Mg–Zn–Y–Zr casting magnesium alloy with high thermal conductivity

Cited by 53 publications

References 34 publications

Historical Progress in Electromagnetic Interference Shielding Effectiveness of Conventional Mg Alloys Leading to Mg‐Li‐Based Alloys: A Review

Historical Progress in Electromagnetic Interference Shielding Effectiveness of Conventional Mg Alloys Leading to Mg‐Li‐Based Alloys: A Review

Investigation of castability, mechanical, corrosion properties and flammability of ML-OPB and EWZ43 magnesium alloys

Effect of Heat Treatment on the Mechanical and Corrosion Properties of Mg–Zn–Ga Biodegradable Mg Alloys

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