Design of Mg Zn Si Ca casting magnesium alloy with high thermal conductivity

Баженов, В. Е.; Колтыгин, А. В.; Sung, Ming-Je; Park, S.H.; Titov, A. Yu.; Bautin, V. A.; Матвеев, С. В.; Belov, Mikhail V.; Белов, В. Д.; Malyutin, K.V.

doi:10.1016/j.jma.2019.11.008

Cited by 35 publications

(7 citation statements)

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“…It has been reported that the increased solidification ranges because of increasing Zn content could result in the increase of hot-tearing susceptibility during HPDC [23]. Moreover, the effect of Zn on the maximum solid solubility of Mg-RE alloys and precipitation temperatures of Zn-containing phases were investigated.…”

Section: Resultsmentioning

confidence: 99%

A high pressure die cast magnesium alloy with superior thermal conductivity and high strength

et al. 2021

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Section: Resultsmentioning

confidence: 99%

A high pressure die cast magnesium alloy with superior thermal conductivity and high strength

et al. 2021

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“…4, б. Определенные по поляризационным кривым средние значения потенциала коррозии, тока коррозии и вычисленные значения скорости коррозии изучаемых сплавов представлены в табл. 3, в которую добавлены также полученные в аналогичных условиях значения этих показателей для сплава МЛ5 [32]. Видно, что потенциал коррозии у сплавов МЛ-ОПБ и EWZ43 практически не различается и он гораздо более отрицательный, чем у сплава МЛ5.…”

Section: результаты и их обсуждениеunclassified

“…5 представлены значения жидкотекучести по спиральной пробе, горячеломкости по кольцевой пробе и пробе «Арфа» сплавов МЛ-ОПБ и EWZ43 при температуре заливки 740 °С. Видно, что величина жидкотекучести сплава EWZ43 совпадает с полученной для сплава МЛ5 (была определена в аналогичных условиях [32]), а сплав МЛ-ОПБ превосходит по жидкотекучести эти сплавы (рис. 5, а).…”

Section: результаты и их обсуждениеunclassified

“…Для сплава МЛ-ОПБ наблюдалось полное отсутствие трещин, что говорит о минимальной горячеломкости. Максимальная длина ветви без трещин для сплава МЛ5 составила 50 мм [32], что подтверждает выводы о том, что склонность к образованию горячих трещин у сплава МЛ-ОПБ гораздо ниже, чем у наиболее распространенного литейного магниевого сплава МЛ5. Сплав EWZ43 занимает промежуточное положение между указанными сплавами.…”

Section: результаты и их обсуждениеunclassified

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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 elements La and Ce have relatively low solubility in magnesium and are expected to contribute greater to improving thermal conductivity of a magnesium alloy, e.g., DSM-1. Several other magnesium alloy compositions were also developed using lab scale HPDC machines [119][120][121][122][123] which showed excellent thermal conductivities and good die castability. The Mg-4Al-4Zn-4RE-1Ca magnesium alloy was reported to have good castability for thin-walled components with a thermal conductivity of 94.4 W/ mK and desirable mechanical properties (YS = 185 MPa, UTS = 233 MPa and elongation = 4.2%) [121].…”

Section: Battery-related Application Of Magnesium Alloys: (A) Hpdc Az...mentioning

confidence: 99%

Applications of High-Pressure Die-Casting (HPDC) Magnesium Alloys in Industry

Fan¹,

Wang²,

Wang³

et al. 2023

Magnesium Alloys - Processing, Potential and Applications

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High-pressure die-cast (HPDC) magnesium alloys have seen diverse applications in the automotive industry, primarily driven by requirements in internal combustion engine (ICE) vehicles. As the automotive industry is transitioning to an electric vehicle (EV) architecture, there is a great potential for novel applications to improve driving range efficiency. In addition, there is a trend toward larger-sized automotive die castings and an increased interest in aerospace applications due to weight reduction. In this chapter, we reviewed the traditional automotive structural applications in ICE vehicles, as well as current and potential future EV and aerospace applications of HPDC magnesium alloys. The structural applications using AM50, AM60, AZ91 and AE44 magnesium alloys in traditional vehicles can be applied to modern EVs. Additionally, magnesium alloys with varying degrees of higher thermal conductivity, improved castability, superior high temperature properties and flammability need to be developed to replace battery and aerospace in-cabin-related structural materials to meet all safety requirements. Several newly developed magnesium alloys with superior castability are also reviewed for potential automotive and aerospace applications.

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Design of Mg Zn Si Ca casting magnesium alloy with high thermal conductivity

Cited by 35 publications

References 27 publications

A high pressure die cast magnesium alloy with superior thermal conductivity and high strength

A high pressure die cast magnesium alloy with superior thermal conductivity and high strength

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

Applications of High-Pressure Die-Casting (HPDC) Magnesium Alloys in Industry

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