Effects of calcium on the microstructures and tensile properties of Mg–5Li–3Al alloys

Wang, Tao; Wu, Ruizhi; Zhang, Milin; Li, Li; Zhang, Jinghuai

doi:10.1016/j.msea.2011.04.034

Cited by 30 publications

(15 citation statements)

References 21 publications

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“…It should be noted that higher amounts of calcium atoms (from 1 to 1.5 wt.%) lowered the tensile properties. This is attributed to the formation of (Mg, Al) 2 Ca eutectic phase along the grain boundaries due to the excess calcium atoms [35]. Lin et al [34] investigated the effects of severe plastic deformation on Mg-Li alloys ECAP-ed and rolled the alloys after annealing.…”

Section: Grain and Subgrain Strengtheningmentioning

confidence: 99%

Strengthening Mechanisms of Magnesium-Lithium Based Alloys and Composites

Muga

Zhang

2016

Advances in Materials Science and Engineering

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Mg-Li based alloys are widely applied in various engineering applications. The strength of these alloys is modified and enhanced by different strengthening mechanisms. The strengthening mechanisms of these alloys and their composites have been extensively studied during the past decades. Important mechanisms applied to strengthening the alloys include precipitation strengthening, solution strengthening, grain and subgrain strengthening, and dislocation density strengthening. Precipitation and solution strengthening mechanisms are strongly dependent on composition of the alloys and thermal treatment processes, whereas grain and subgrain and dislocation density strengthening mechanisms majorly depend on thermomechanical processing. In this paper, recent studies on conventional processes for the strengthening of Mg-Li based alloys are summarized as they are critical during the alloys design and processing. Main strengthening mechanisms are objectively reviewed, focusing on their advantages and drawbacks. These can contribute to enhancing, initiating, and improving future researches for alloys design and suitable processing selection.

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Section: Grain and Subgrain Strengtheningmentioning

confidence: 99%

Strengthening Mechanisms of Magnesium-Lithium Based Alloys and Composites

Muga

Zhang

2016

Advances in Materials Science and Engineering

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“…Firstly, after extrusion, the microstructures were refined, and the secondary phase particles were crushed to finer ones [17] . Secondly, extrusion produced the working hardening.…”

Section: Mechanical Properties Of the Alloysmentioning

confidence: 99%

Comparative study on the microstructure and mechanical properties of Mg-Li-Al based alloys with yttrium and strontium addition

Peng

Jiang

et al. 2015

J. Wuhan Univ. Technol.-Mat. Sci. Edit.

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The effects of yttrium and strontium on the microstructure and mechanical properties of Mg11Li-3Al magnesium alloy (LA113) are compared and analyzed. Microstructures and phases of the alloys were studied with optical microscope (OM), scanning electron microscope (SEM), X-ray diffractometer (XRD) and energy dispersive spectrometer (EDS). Mechanical properties of alloys were measured with tensile tester. The results show that yttrium and/or strontium additions produce a strong grain refi ning effect in LA113 alloy. Al 2 Y and Al 4 Sr, etc. phases with different morphologies are verifi ed and exist inside the grain or at the grain boundaries, which directly impact on the mechanical properties of LA113 alloy. The results of tensile tests show that, the as-extruded LA113-1Y-1Sr alloy obtains the optimal tensile property of which the tensile strength and elongation are 253.56 MPa and 18.12%, the tensile strength is increased by almost 25% compared with the asextruded LA113 alloy.

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“…Li Zhang et al [19] revealed that the microstructure and mechanical properties of Mg-Al-Ca alloys were affected by the Ca/Al ratio, indicating that the strengthening effect of the Al 2 Ca phase was better than that of the Mg 2 Ca phase. Wang et al [22] showed that extruded Mg-5Li-3Al-0.5Ca alloy had the highest strength.…”

Section: Introductionmentioning

confidence: 99%

Effect of Ca Content on the Mechanical Properties and Corrosion Behaviors of Extruded Mg–7Li–3Al Alloys

Xiong

Yang

Deng

et al. 2019

Metals

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The effect of Ca addition on the microstructure, mechanical properties, and corrosion behaviors of the extruded Mg–7Li–3Al alloys was investigated. The results showed that the extruded Mg–7Li–3Al–xCa alloys consisted of α-Mg (hcp) + β-Li (bcc) matrix phases and Al2Ca. With increasing Ca content, the amount and morphology of the Al2Ca phase changed significantly. The grains of the extruded Mg–7Li–3Al–xCa alloys were refined by dynamic recrystallization during the extrusion process. The tensile tests results indicated that the extruded Mg–7Li–3Al–0.4Ca alloy exhibited favorable comprehensive mechanical properties; its ultimate tensile strength was 286 MPa, the yield strength was 249 MPa, and the elongation was 18.7%. The corrosion results showed that this alloy with 0.4 wt.% Ca addition exhibited superior corrosion resistance, with a corrosion potential Ecorr of −1.48742 VVSE, attributed to the formation of protective Al2Ca phases.

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Effects of calcium on the microstructures and tensile properties of Mg–5Li–3Al alloys

Cited by 30 publications

References 21 publications

Strengthening Mechanisms of Magnesium-Lithium Based Alloys and Composites

Strengthening Mechanisms of Magnesium-Lithium Based Alloys and Composites

Comparative study on the microstructure and mechanical properties of Mg-Li-Al based alloys with yttrium and strontium addition

Effect of Ca Content on the Mechanical Properties and Corrosion Behaviors of Extruded Mg–7Li–3Al Alloys

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