Microstructure and properties of Mg–5.21Li–3.44Zn–0.32Y–0.01Zr alloy

Chen, Zhaoyun; Dong, Zichao; Yu, Chun; Tong, Rui

doi:10.1016/j.msea.2012.09.005

Cited by 22 publications

(8 citation statements)

References 12 publications

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“…The observed composite sheet fractures from the 0.97Mg–0.03Zn phase can be attributed to the abovementioned characteristics. Similar results were reported in the deformation of Mg alloys, particularly in welding Mg alloy to steel via solid-phase friction-stir welding [ 23 , 24 , 25 ]. The XRD results showed that the Zn coating from GS improved the metallurgical bonding of AZ31 and steel.…”

Section: Resultssupporting

confidence: 83%

Fe/Mg/Fe Multilayer Composite Sheet Fabricated by Roll Cladding

Ren

Zheng

2022

Materials

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A new multilayer composite sheet consisting of Fe/Mg/Fe was fabricated from galvanized steels and Mg alloy sheets via roll cladding. The clad steel improved the Mg surface hardness from HV 65 to HV 132. Bonding occurred as the reduction ratios increased up to over 10%. Investigation of the microstructure of the Mg/steel interface revealed a 5 μm- to 10 μm-thick transition layer between Mg and each steel sheet, consisting of Zn and an intermetallic compound (0.97Mg–0.03Zn). Zinc coating from the galvanized steel sheet improved the metallurgical bonding between Mg and Fe by forming new intermetallic phases.

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Section: Resultssupporting

confidence: 83%

Fe/Mg/Fe Multilayer Composite Sheet Fabricated by Roll Cladding

Ren

Zheng

2022

Materials

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“…On the other hand, the strength of Mg alloys will be reduced due to the addition of Li element. In fact, Mg–Li alloy is the lightest metal structural material with high stiffness, excellent machinability, good magnetic-shielding, and resistance, whereas the strength of Mg–Li alloys is very low [ 20 , 21 , 22 ]. Usually, previous way to increase strength included addition of Zn, Al, or rare earth elements (RE); or addition of Sn with subsequent SPD and heat treatment.…”

Section: Introductionmentioning

confidence: 99%

Microstructural Evolution and Mechanical Properties in Superlight Mg-Li Alloy Processed by High-Pressure Torsion

et al. 2018

Materials

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Microstructural evolution and mechanical properties of LZ91 Mg-Li alloy processed by high-pressure torsion (HPT) at an ambient temperature were researched in this paper. The microstructure analysis demonstrated that significant grain refinement was achieved after HPT processing with an average grain size reducing from 30 μm (the as-received condition) to approximately 230 nm through 10 turns. X-ray diffraction analysis revealed LZ91 alloy was consisted of α phase (hexagonal close-packed structure, hcp) and β phase (body-centered cubic structure, bcc) before and after HPT processing. The mean value of microhardness increased with the increasing number of HPT turns. This significantly increased hardness of specimens can be explained by Hall-Petch strengthening. Simultaneously, the distribution of microhardness along the specimens was different from other materials after HPT processing due to the different mechanical properties of two different phases. The mechanical properties of LZ91 alloy processed by HPT were assessed by the micro-tensile testing at 298, 373, 423, and 473 K. The results demonstrate that the ultra-fine grain LZ91 Mg-Li alloy exhibits excellent mechanical properties: tensile elongation is approximately 400% at 473 K with an initial strain rate of 1 × 10−2 s−1.

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“…Although the microstructures and mechanical properties of Mg-Li alloys can be easily seen in the latest literatures [18][19][20][21][22][23][24][25], their deformation behaviors are seldom reported. The advantages of Mg-Li alloys, compared with the common Mg alloys, are the decrease of the axis (c/a) ratio of the lattice originated from the addition of Li into Mg, which enable prismatic slips to be activated easier [26,27] and the deformability to be improved [17].…”

Section: Introductionmentioning

confidence: 99%