Study on alloying element distribution and compound structure of AZ61 magnesium alloy with yttrium

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

doi:10.1016/j.jpcs.2019.03.021

Cited by 13 publications

(5 citation statements)

References 6 publications

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“…Experiment results show that Zr addition improves the mechanical properties of both casting and extruded Mg-15Gd-1Zn alloys, and the Mn addition is beneficial for the tensile properties of casting Mg-15Gd-1Zn alloy. Thus, another common method used to improve mechanical properties of magnesium alloys is alloying, which can improve the mechanical properties at room temperature because Al and Zn have significant effects on grain refinement, plasticity and thermal stability (Su et al , 2019; You et al , 2017). However, there are still some limitations on the effect of Al addition on microstructure and mechanical properties of Mg-Gd-Y-Zn alloys; previous research regarding the addition of Al was so few and the effect of Al addition is still essential to further study.…”

Section: Introductionmentioning

confidence: 99%

Effect of Al on microstructure and mechanical properties of as-cast Mg-8Gd-4Y-1Zn alloy

Zhou

Xing³

et al. 2020

ACMM

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Purpose This paper aims to investigate the effect of aluminum addition on the microstructure and mechanical properties of Mg-8Gd-4Y-1Zn alloy. Design/methodology/approach Mg-8Gd-4Y-1Zn-xAl (x = 0, 0.5, 1.0, 1.5, 2.0 Wt.%) alloys were prepared by the conventional gravity casting technology, and then microstructures, phase composition and mechanical properties were investigated by material characterization method, systematically. Findings Results show that the as-cast microstructure of Mg-8Gd-4Y-1Zn alloy mainly consists of a-Mg matrix as well as Mg12REZn (18 R LPSO structure), and island-like Mg3(RE, Zn) phase is distributed at the grain boundary. The addition of a small amount of Al (0.5 Wt.%) can decrease the content of island-like Mg3(RE, Zn) phase, but significantly increase the content of long-period stacking ordered (LPSO) structure, resulting in the improvement of both tensile strength and elongation of Mg-8Gd-4Y-1Zn alloy. However, the addition of excessive Al will consume Re element and decrease the amount of LPSO structure, leading to the decrease of tensile properties. When the content of Al is 0.5 Wt.%, the tensile strength and elongation are 225 MPa and 9.0% of Mg-8Gd-4Y-1Zn alloy, which are 14% and 29% higher than that of Mg-8Gd-4Y-1Zn alloy, respectively. Originality/value Adding aluminum to Mg-8Gd-4Y-1Zn alloy strengthens its mechanical properties. And the effect of Al content on the alloy strengthening. The formation mechanism of LPSO structure with different aluminum content was revealed.

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Section: Introductionmentioning

confidence: 99%

Effect of Al on microstructure and mechanical properties of as-cast Mg-8Gd-4Y-1Zn alloy

Zhou

Xing³

et al. 2020

ACMM

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“…In the examined microstructures were not identified phases: αAl 3 Y, Al 2 Y, probably by too low content of yttrium and aluminum, which also explains the phase equilibrium system Al-Y [25]. However, J. Su et al in their study [26] demonstrated that, the formation of Al 2 Y consumes a part of Al, and the increase in Y content increases the solid solubility of Al, thus reducing the Al of participating eutectic reaction, which leads to a reduction in γ(Mg 17 Al 12 ) amount in eutectic phase. The similar conclusion was formulated by L. Liu et.…”

Section: Microstructure Analysismentioning

confidence: 78%

Archives of Metallurgy and Materials

Mikusek,

Rapiejko,

Andrzejczak

et al. 2020

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This paper presents results of a study of the effect of inoculation of yttrium on the microstructure of AZ91 alloy. The concentration of the inoculant was increased in samples in the range from 0.1% up to 0.6%. The influence of Y on the thermal effects resulting from the phase transformations occurring during the crystallisation at different inoculant concentrations were examined with the use of Derivative and Thermal Analysis (DTA). The microstructures of the samples were examined with the use of an optical microscope; and an image analysis with a statistical analysis were also carried out. Those analyses aimed at examining oh the effect of inoculation of the Y on the differences between the grain diameters of phase α Mg and eutectic α Mg + γ (Mg 17 Al 12 ) in the prepared examined material as well as the average size of each type of grain by way of measuring their perimeters.

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“…No matter what type of solid solution, it would inevitably bring about the lattice distortion. The lattice distortion could be evaluated by the lattice parameters of α(Al) [23][24][25]. For 2195 alloy, Cu is the main alloy element.…”

Section: Effects Of Lfec On Intra-granular Solid Solubility Of Alloy mentioning

confidence: 99%

Low Frequency Electromagnetic Casting of 2195 Aluminum–Lithium Alloy and Its Effects on Microstructure and Mechanical Properties

Wang

Sun

Fang

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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In this study, the low frequency electromagnetic casting (LFEC) technology was adopted to fabricate 2195 Al-Li alloy. The microstructure and solid solubility of as-cast 2195 alloys, as well as the second phase precipitation and tensile properties after aging, were investiagated and compared with the counterpart direct chill casting 2195 alloy. Our results indicate that LFEC can significantly improve the microstructure and metallurgical quality of as-cast alloy, and increase the number density of θ′ (Al 2 Cu) and T 1 (Al 2 CuLi) phases during aging treatment due to the enhanced solubilities of alloying elements. The tensile properties of 2195 aged alloy cast by LFEC were hence improved evidently.

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Study on alloying element distribution and compound structure of AZ61 magnesium alloy with yttrium

Cited by 13 publications

References 6 publications

Effect of Al on microstructure and mechanical properties of as-cast Mg-8Gd-4Y-1Zn alloy

Effect of Al on microstructure and mechanical properties of as-cast Mg-8Gd-4Y-1Zn alloy

Archives of Metallurgy and Materials

Low Frequency Electromagnetic Casting of 2195 Aluminum–Lithium Alloy and Its Effects on Microstructure and Mechanical Properties

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