Effects of homogenization treatment on the microstructure and mechanical properties of Mg–8Li–3Al–Y alloy

Peng, Qian; Zhou, Haitao; Zhong, Fei; Ding, H.B.; Zhou, Xiangyang; Liu, R.R.; Xie, Tongbin; Peng, Yiming

doi:10.1016/j.matdes.2014.03.046

Cited by 45 publications

(12 citation statements)

References 14 publications

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“…As the force is applied to material, stress concentration and micro porous around the second phase particles would be formed. LeMay has deduced the applied stress (S VF ) that form a micro porous around a second phase particle need [28,29]:…”

Section: Mechanical Properties Of the As-extruded Alloysmentioning

confidence: 99%

Influence of the Al2Ca phase on microstructure and mechanical properties of Mg–Al–Ca alloys

Jiang

Hong

et al. 2015

Journal of Alloys and Compounds

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Section: Mechanical Properties Of the As-extruded Alloysmentioning

confidence: 99%

Influence of the Al2Ca phase on microstructure and mechanical properties of Mg–Al–Ca alloys

Jiang

Hong

et al. 2015

Journal of Alloys and Compounds

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“…Since the duplex Mg-6%Li alloy only contains the elements of Mg and Li, the precipitates in β-Li phases are the α-Mg particles. Similarly, previous work also reported that needle-shaped α-Mg particles could precipitate in β-Li phases during ageing treatment171832.…”

Section: Resultsmentioning

confidence: 56%

“…hot extrusion or equal channel angular extrusion)12141516. Moreover, their thermal stability is poor17181920, which is mainly ascribed to the early precipitation of phase particles during ageing process17181920212223. Wang et al .…”

mentioning

confidence: 99%

“…Moreover, Peng et al . found that the needle-shaped α-Mg particles could precipitate in β-Li phases of Mg-8%Li-3%Al-1%Y alloy during homogenization treatment at elevated temperature18. In addition, the metastable phase MgLi 2 X (X is Al or Zn) in the duplex Mg-Li based alloys could easily transform into soft equilibrium phase MgLiX during ageing process141920212223.…”

mentioning

confidence: 99%

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Natural ageing responses of duplex structured Mg-Li based alloys

Wang

et al. 2017

Sci Rep

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Natural ageing responses of duplex structured Mg-6%Li and Mg-6%Li-6%Zn-1.2%Y alloys have been investigated. Microstructural analyses revealed that the precipitation and coarsening process of α-Mg particles could occur in β-Li phases of both two alloys during ageing process. Since a certain amount of Mg atoms in β-Li phases were consumed for the precipitation of abundant tiny MgLiZn particles, the size of α-Mg precipitates in Mg-6%Li-6%Zn-1.2%Y alloy was relatively smaller than that in Mg-6%Li alloy. Micro hardness measurements demonstrated that with the ageing time increasing, the α-Mg phases in Mg-6%Li alloy could have a constant hardness value of 41 HV, but the contained β-Li phases exhibited a slight age-softening response. Compared with the Mg-6%Li alloy, the age-softening response of β-Li phases in Mg-6%Li-6%Zn-1.2%Y alloy was much more profound. Meanwhile, a normal age-hardening response of α-Mg phases was maintained. Tensile results indicated that obvious ageing-softening phenomenon in terms of macro tensile strength occurred in both two alloys. Failure analysis demonstrated that for the Mg-6%Li alloy, cracks were preferentially initiated at α-Mg/β-Li interfaces. For the Mg-6%Li-6%Zn-1.2%Y alloy, cracks occurred at both α-Mg/β-Li interfaces and slip bands in α-Mg and β-Li phases.

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“…Some studies showed that Al can improve the mechanical properties of Mg-Li alloys owing to the formation of intermetallic compounds and a favorable solid-solution strengthening effect [10][11][12][13][14]. Bahman et al [15] reported that more than 3 wt.% addition of Al dramatically degraded the corrosion resistance of Mg-Al-Zn-Ca alloys due to the formation of a Mg 17 Al 12 network at the grain boundaries.…”

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 homogenization treatment on the microstructure and mechanical properties of Mg–8Li–3Al–Y alloy

Cited by 45 publications

References 14 publications

Influence of the Al2Ca phase on microstructure and mechanical properties of Mg–Al–Ca alloys

Influence of the Al2Ca phase on microstructure and mechanical properties of Mg–Al–Ca alloys

Natural ageing responses of duplex structured Mg-Li based alloys

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

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