Influence of Extrusion on the Microstructure and Mechanical Behavior of Mg-9Li-3Al-xSr Alloys

Yang, Yan; Peng, Xiaodong; Wen, Haiming; Zheng, Baolong; Zhou, Yizhang; Xie, Weidong; Lavernia, Enrique J.

doi:10.1007/s11661-012-1441-9

Cited by 83 publications

(23 citation statements)

References 64 publications

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“…17 The fractographies of the as-extruded Mg-9Li-5RE-0.4Zr alloys were shown in Figure 6. All the fracture morphologies exhibited ductile fracture with massive dimples which agreed with the report 18 . Particles could be seen at the bottom of dimples in all the three alloys (as marked in Figure 6).…”

Section: Microstructures and Mechanical Properties Of As-extruded Mg-supporting

confidence: 90%

Influence of Gd, Nd and Ce Additions on Microstructures and Mechanical Properties of Ultra-light Dual Phase Mg-9Li-0.4Zr Alloys

Bao

Zhang

et al. 2016

Mat. Res.

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Section: Microstructures and Mechanical Properties Of As-extruded Mg-supporting

confidence: 90%

Influence of Gd, Nd and Ce Additions on Microstructures and Mechanical Properties of Ultra-light Dual Phase Mg-9Li-0.4Zr Alloys

Bao

Zhang

et al. 2016

Mat. Res.

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“…When combined with Sr, an abundance of blocky eutectic structure is formed and distributed along the grain boundaries with discontinuous network morphology. The fishbone-shaped compound is hard and inherently brittle which not only increases the secondary dendrite arm spacing of the primary β-Li phase but also decreases the bond strength between grains [19] . But the intermetallic compound with Sr will cause fracture and dispersion of the starting fishbonelike network into particles after extrusion.…”

Section: Discussionmentioning

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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“…When this second phase (Al 2 Ca phase) was uniformly distributed in the matrix phase with finely dispersed particles, a significant strengthening effect was produced. The strength of the alloys can be estimated from the following Equation [5]:…”

Section: Effect Of Ca Content On the Strength Of Extruded Mg-7li-3al-mentioning

confidence: 99%

“…Mg-Li alloys have been applied in automatic, 3C (Computer, Communication, Consumer Electronic) products and communication electronics fields for more than a decade owing to the high specific strength and advantageous formability [1][2][3][4]. However, their poor creep resistance and inferior corrosion resistance usually limit their application [5,6]. In order to solve the existing problems, many alloying elements (Al, Ca) have been used to improve the mechanical properties and corrosion resistance of Mg-Li alloys [7][8][9].…”

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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Influence of Extrusion on the Microstructure and Mechanical Behavior of Mg-9Li-3Al-xSr Alloys

Cited by 83 publications

References 64 publications

Influence of Gd, Nd and Ce Additions on Microstructures and Mechanical Properties of Ultra-light Dual Phase Mg-9Li-0.4Zr Alloys

Influence of Gd, Nd and Ce Additions on Microstructures and Mechanical Properties of Ultra-light Dual Phase Mg-9Li-0.4Zr Alloys

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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