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

Rong, Jian; Zhu, Jia–Ning; Xiao, Wenlong; Zhao, Xinqing; Ma, Chao

doi:10.1016/j.intermet.2021.107350

Cited by 26 publications

(6 citation statements)

References 37 publications

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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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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

View full text Add to dashboard Cite

show abstract

“…Therefore, it can confirm that grain strengthening, secondary phase strengthening and solid solution strengthening contribute to the alloy strengthening (Ref 39). Thus, the strengthening mechanism in the alloy can be expressed as an equation ( Ref 33,39,35):…”

Section: The Relationship Between Microstructures and Mechanical Prop...mentioning

confidence: 99%

“…The addition of Nd increases the number of lamellar Mg 12 RE phases, while nanoscale bulk Mg 41 Nd 5 phases are produced at the grain boundaries. The continuous distribution of the intermetallic compound Mg 12 RE at the grain boundaries has a strong reinforcing effect on the yield strength(Ref 33,35). Moreover, the metastable phase Mg 12 RE and the stable phase Mg 41 Nd 5 have good thermal stability (Ref 43).…”

mentioning

confidence: 99%

Effect of Nd on the Microstructure and Mechanical Properties of Mg-La-Ce Alloys at Ambient and Elevated Temperatures

Feng

Dong

Cai

et al. 2022

J. of Materi Eng and Perform

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The microstructures and tensile properties were investigated for high-pressure die-cast Mg1.6La1.0Ce alloy with different Nd contents from 0 to 3 wt.%. The results showed that fine dendritic and segmented dendritic microstructures were observed in the as-cast alloys, but the eutectic morphology changed from lamellar for low Nd-containing alloys to continuous fibrous with dendritic α-Mg in eutectics for high Nd-containing alloys. The compositions of the eutectic phase were also transferred from Mg12(La, Ce) in the alloys without Nd to Mg12(La, Ce, Nd) in the alloys with Nd addition. When the concentration of Nd was greater than 2 wt.%, numerous nanoscale Mg-Nd intermetallic phases precipitated at the grain boundaries and eutectic area. The addition of Nd was also found to increase tensile strength significantly at ambient temperature and elevated temperatures. For the alloy without Nd, the yield strength and ultimate tensile strength (UTS) was 135.6 MPa and 189.9 MPa at ambient temperature and 56.3 MPa and 57.4 MPa at 300 °C, respectively. When adding 3 wt.% Nd, the yield strength increased to 161.9 MPa at ambient temperature and 75.4 MPa at 300 °C. The UTS increased to 181.9 MPa at ambient temperature and 90.4 MPa at 300 °C. The significant improvement in strength was attributed to the strengthening from the refined structure and the dispersion of second-phases of intermetallic compounds.

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“…11 and Table 2. The strengthening mechanism of the Mg1.6La1Ce-xGd alloys can be expressed by grain strengthening (σ gb ), secondary phase strengthening (σ Mg-RE ) and solid solution strengthening (σ ss ) as follows [5,27,43]:…”

Section: Relationship Between Microstructure and Mechanical Propertiesmentioning

confidence: 99%

“…It has been used in transportation, aerospace, electronics, and other industrial fields. To achieve high productivity and low mass-production cost, most of the applied Mg alloys are made by high-pressure die casting (HPDC) [4,5]. However, the further application of Mg alloys is partly limited by the poor plasticity at ambient temperature and the low heat resistance at elevated temperatures, especially for working temperatures above 200 °C [6].…”

Section: Introductionmentioning

confidence: 99%