Structural analysis of Al–Ce compound phase in AZ-Ce cast magnesium alloy

Su, Juan; Guo, Feng; Cai, Huisheng; Liu, Liang

doi:10.1016/j.jmrt.2019.07.042

Cited by 7 publications

(5 citation statements)

References 10 publications

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“…Figure 1 shows the XRD patterns of as-cast samples. ATZ731 alloys clearly consist of α-Mg, Mg 17 Al 12 , and Mg 2 Sn phases (Figure 1a) similar to those in Mg-Al-Sn-(Zn) alloys [34]. Small amounts of Mm addition caused the new diffraction peaks (Figure 1b-e), which are identified to be Al 4 Mm (most of Al 4 Ce) [35].…”

Section: Phases Composition and Microstructuresmentioning

confidence: 77%

“…With respect to ATZ731 alloy with 2.0 wt.% Mm addition, the refined α-Mg is beneficial to the strength and ductility (Figure 4d). On the contrary, the increased volume fraction of eutectic phases associated with more Al 4 Mm phase highly enriched at local regions (Figures 2h and 7f), such as grain boundaries, can improve the UTS but may lower the YS and E f [34]. Once the weakening effects induced by the locally enriched eutectic phases is far stronger than the enhancing roles afforded by the refined grains, a slight decrease of average YS at RT and E f at 175 • C possibly occur.…”

Section: Discussionmentioning

confidence: 95%

“…Xiao [24] suggested that the preferentially formed Al 4 Mm particles cannot act as the nucleation sites of α-Mg, meaning that the heterogeneous nucleation is a determinant of the refined α-Mg in Mm-added alloys [24]. Consequently, the preferential partition behaviour of ATZ731 alloys caused by the added Mm during solidification has to be considered [29,34]. Since the dissolved atoms of alloying elements were pushed forward at the α-Mg growth front leading to a great constitutional supercooling near the growth front during solidification, which contributed to the refined α-Mg (Figure 4).…”

Section: Phases Composition and Microstructuresmentioning

confidence: 99%

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Effects of Ce-Rich Misch Metal on the Microstructures and Tensile Properties of as-Cast Mg-7Al-3Sn-1Zn Alloys

Liu

Sun

Xiao

et al. 2021

Metals

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The effects of small amounts of Ce-rich misch metal (Mm: 0.5, 1.0 and 2.0 wt.%) addition on the microstructure and tensile properties of as-cast Mg-7Al-3Sn-1Zn wt.% (ATZ731) alloy have been investigated. The addition of Mm restricts the formation of the Mg17Al12 phase but greatly promotes the Al4Mm phase. The proper Mm addition enhances the strength and ductility of ATZ731 alloys at both room temperature (RT) and 175 °C. ATZ731 alloys with 1.0 wt.% Mm addition exhibit an advantageous combination strength and ductility, with the ultimate tensile strength (UTS), 0.2% yield strength (YS) and elongation to failure (Ef) at 175 °C of ~148 MPa, ~102 MPa and ~28%, improved by ~14.7%, ~24.3% and ~53.8%, respectively, compared to those of ATZ731 alloy. This enhancement is primarily owing to the refined microstructures and the high thermal stability of Al4Mm at the elevated temperature in contrast with that of the Mg17Al12 phase. The fracture modes are also discussed.

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Section: Phases Composition and Microstructuresmentioning

confidence: 77%

Section: Discussionmentioning

confidence: 95%

Section: Phases Composition and Microstructuresmentioning

confidence: 99%

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Effects of Ce-Rich Misch Metal on the Microstructures and Tensile Properties of as-Cast Mg-7Al-3Sn-1Zn Alloys

Liu

Sun

Xiao

et al. 2021

Metals

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“…3 Among the different combinations of Mg alloy, the cast magnesium/aluminum/zinc/manganese (AZ) is a significant choice for automotive industries due to their excellent corrosion resistance, castability, and high strength-to-weight ratio. 4,5 The additions of ceramic particles in Mg alloy increased specific properties. 6 Generally, powder metallurgy, 7 infiltration, 8 stir casting, 9,10 and friction stir processing were referred for magnesium-based matrix composites fabrication.…”

Section: Introductionmentioning

confidence: 99%

“…According to the behavior, it was classified as cast and wrought alloy 3 . Among the different combinations of Mg alloy, the cast magnesium/aluminum/zinc/manganese (AZ) is a significant choice for automotive industries due to their excellent corrosion resistance, castability, and high strength‐to‐weight ratio 4,5 . The additions of ceramic particles in Mg alloy increased specific properties 6 .…”

Section: Introductionmentioning

confidence: 99%

SiC actions on characteristics analysis of AZ91D hybrid nanocomposite by liquid state processing

Yesuraj,

Ali,

Venkatesh

et al. 2023

Int J Applied Ceramic Tech

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With an inherent lowest density and distinct solubility with enhanced mechanical behavior reason, the magnesium alloy composite is extensively used in the auto and aero sectors. The processing of magnesium alloy found micro‐cracks and voids between the oxidation spot, which fails properties. Through the sulfur hexafluoride (SF6) atmosphere, the AZ91D alloy hybrid nanocomposites are synthesized with 10 wt% alumina (Al2O3) and 0, 3, 6, and 9 wt% of silicon carbide (SiC) nanoparticles via a liquid state process with 400 rpm stir speed followed by vacuum die casting. The effect of SiC actions on physical behavior, microstructural formation, and mechanical properties of AZ91D/10 wt%Al2O3, AZ91D/10 wt%Al2O3/3 wt% SiC, AZ91D/10 wt% Al2O3/6 wt% SiC, and AZ91D/10 wt% Al2O3/9 wt% SiC composites are studied and its results compared with cast AZ91D alloy. Due to the actions of SiC in AZ91D/10 wt%Al2O3, the composite density conforms to the rule of mixture, and the void and micro‐cracks are limited (less than 1%) by the impact of the casting process, as evidenced in the microstructural illustration. An effect of 10 wt% Al2O3 and 9 wt% SiC contents in AZ91D facilitates maximum tensile strength of 181 MPa, improved elongation percentage of 2.2%, optimum hardness of 85HV, and superior impact toughness of 21.8 J/mm2, which is higher than the all other compositions.

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Transition-metal‐doped ceria carried on two-dimensional vermiculite for selective catalytic reduction of NO with CO: Experiments and density functional theory

Liu

Dong³

et al. 2021

Applied Surface Science

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Structural analysis of Al–Ce compound phase in AZ-Ce cast magnesium alloy

Cited by 7 publications

References 10 publications

Effects of Ce-Rich Misch Metal on the Microstructures and Tensile Properties of as-Cast Mg-7Al-3Sn-1Zn Alloys

Effects of Ce-Rich Misch Metal on the Microstructures and Tensile Properties of as-Cast Mg-7Al-3Sn-1Zn Alloys

SiC actions on characteristics analysis of AZ91D hybrid nanocomposite by liquid state processing

Transition-metal‐doped ceria carried on two-dimensional vermiculite for selective catalytic reduction of NO with CO: Experiments and density functional theory

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