Effects of rare earth yttrium on microstructure and properties of Mg Al Zn alloy

Wang, M.F.; Xiao, D.H.; Zhou, Pengfei; Liu, W.S.; Ma, Yan-Yong; Sun, Beibei

doi:10.1016/j.jallcom.2018.01.234

Cited by 48 publications

(7 citation statements)

References 23 publications

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“…[ 39 ] The size of Al 2 Y particles was ≈5 μm in as‐cast Mg–15Al–5Zn– x Y alloys ( x = 0, 0.15, 0.25, 0.5, 3, and 5 wt%). [ 41 ] According to the Al–Y binary alloy phase diagram, the melting point of Al 2 Y is 1490 °C. [ 36 ] In the traditional Mg alloys, with the addition of Y and Al, Al 2 Y particles start to form in the liquid state.…”

Section: Resultsmentioning

confidence: 99%

Study on the Fine Grain Size and Microhardness at the Interface of AZ31/Mg‐Y Composites

Xian

Chen

et al. 2021

Adv Eng Mater

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AZ31/Mg‐Y/AZ31 composites are fabricated by hot rolling bonding. To identify the formation mechanism of the microstructure in the interface adjacent region, additional hot rolling or/and diffusion annealing are also conducted on the base of the initial AZ31/Mg‐Y/AZ31 composite. Scanning electron microscopy, energy dispersive spectroscopy, and electron backscatter diffraction are used to characterize the microstructures and chemical compositional distributions. Vicker's microhardness tests are conducted to determine the local mechanical property. It is found that in the Mg–Y layer of the AZ31/Mg‐Y/AZ31 composite, the grain size in the interface‐adjacent region is much finer than that in the central part. Much finer Al2Y particles compared with those in the traditional Mg–Al–Y alloys are formed in the interface‐adjacent region. The formation of the fine grain in the interface‐adjacent region may be mainly related to the Al2Y particles rather than the accommodation deformation between layers. Both the grain refinement and the formation of Al2Y particles contribute to strengthening of the Mg–Y layer. The results in this work may provide a novel method to prepare fine and dispersed high‐melting‐point particles in Mg alloys, thus leading to strong and high‐thermal‐stability Mg alloys.

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Section: Resultsmentioning

confidence: 99%

Study on the Fine Grain Size and Microhardness at the Interface of AZ31/Mg‐Y Composites

Xian

Chen

et al. 2021

Adv Eng Mater

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“…Therefore, doping with rare earth elements can not only effectively improve the corrosion resistance of magnesium alloys but also change the texture of the alloy, rene the grains, and improve its mechanical properties. 51,52 This opens up a new vista for the improvement of established metallurgical procedures in order to produce high-performance magnesium alloys. Based on the corrosion resistance and excellent mechanical properties of the RE-Mg alloys mentioned above, RE-Mg alloys show great application potential as degradable alloys in the eld of biomedicine.…”

Section: Typical Applications Eldsmentioning

confidence: 99%

Sustainability applications of rare earths from metallurgy, magnetism, catalysis, luminescence to future electrochemical pseudocapacitance energy storage

et al. 2023

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“…JIANG et al [ 15 ] found that the block‐shaped Al 2 Gd phase can inhibit the original rod‐shaped Al 11 Nd 3 phase formation. Adding Ca, [ 16 ] RE (La, Ce), [ 17 ] Sm, [ 18 ] Y, [ 19 ] and Sn [ 20,21 ] to Mg–Al‐based alloys will form Mg 2 Ca, (Mg, Al) 2 Ca, Al 11 RE 3 , Al 2 Sm, Al 2 Y, and Mg 2 Sn intermetallic phases. The formation of these compounds can refine Mg 17 Al 12 compounds in alloy and improve the properties of alloy in varying degrees.…”

Section: Introductionmentioning

confidence: 99%

Formation Sequence of Compounds in AZ91‐0.9Ce Alloy and Its Role in Fracture Process

et al. 2022

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AZ91‐0.9Ce alloy with a thickness of 8 mm is prepared by die casting. The formation process of main compounds in the alloy, the role of main compounds in fracture process, the main crack source, and crack propagation path of the alloy are studied. Results show that AZ91‐0.9Ce alloy is mainly composed of α‐Mg matrix, Mg17Al12 compound, Al4Ce compound, and a small amount of Al–Mn–Ce ternary compound. Among them, Al4Ce is formed prior to the Mg17Al12 compound. Mg17Al12 is formed by eutectic reaction, and Al–Mn–Ce ternary compound is formed at a later stage of solidification. Mg17Al12 and Al4Ce are the main crack sources of the alloy during the fracture process. Crack locations in the alloy mainly include grain boundaries, phase boundaries, and Mg17Al12 and Al4Ce compounds. The fracture mechanism of the alloy is that with the increase of load cracks occur at Mg17Al12 and Al4Ce compounds and connect with each other through intergranular and a small amount of transgranular to form the main crack. With the load continues to increase, the main crack gradually expands until alloy fracture failure. The continuous network distribution along grain boundaries of the Mg17Al12 compound is an important reason for intergranular fracture.

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Effects of rare earth yttrium on microstructure and properties of Mg Al Zn alloy

Cited by 48 publications

References 23 publications

Study on the Fine Grain Size and Microhardness at the Interface of AZ31/Mg‐Y Composites

Study on the Fine Grain Size and Microhardness at the Interface of AZ31/Mg‐Y Composites

Sustainability applications of rare earths from metallurgy, magnetism, catalysis, luminescence to future electrochemical pseudocapacitance energy storage

Formation Sequence of Compounds in AZ91‐0.9Ce Alloy and Its Role in Fracture Process

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