Effects of Sn content on the microstructure and mechanical properties of Mg–7Zn–5Al based alloys

Xiao, Wenlong; Jia, Shusheng; Wang, Lidong; Wu, Yaoming

doi:10.1016/j.msea.2010.07.019

Cited by 53 publications

(18 citation statements)

References 25 publications

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“…It is found that high peaks are found with increasing welding speed at a constant rotation rate of 1050 rpm, the grain size of Mg matrix decreased, while some intermetallic particles Zn scratched at the high welding speed of 120mm/min. It reveals that, ZE42 mg phase was dissolved, while base alloy phase remained in the NZ of the welds after FSW, which was consistent with the XRD and SEM analysis [18]. …”

Section: Microstructuresupporting

confidence: 84%

Effect of Friction Stir Welding Processon Mechanical Properties and Microstructure of ZE42 Magnesium Alloy

Darwins¹,

Darwins²,

Satheesh³

2017

IJMPERD

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A new series of magnesium alloys are being developed as due to good properties with any rare earth components. In order to investigate the effects of friction stir welding (FSW) on microstructures and thermo gravimetric analysis of ZE42 magnesium alloy, the hot-extruded alloy plates were butt welded by FSW at various welding speeds.The results showed that the alloy was jointed without defects. The alloy is characterized by mechanical properties, SEM, XRD, TGA and FTIR. With increasing welding speed, the maximum intensity in the NZ first decreased and then increased. In all cases the tensile properties of the alloy after FSW decreased due to the softened region at the heataffected zone (HAZ), FT-IR results helps in distinguishing strong absorption appear in the region of nugget zone it is easily recognized by bands.

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Section: Microstructuresupporting

confidence: 84%

Effect of Friction Stir Welding Processon Mechanical Properties and Microstructure of ZE42 Magnesium Alloy

Darwins¹,

Darwins²,

Satheesh³

2017

IJMPERD

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“…Although a number of studies have been carried out on the mechanics of dislocations and defects in carbon nanotubes [18,19,20] and graphene [21], the mechanical properties of hydrogenfunctionalized graphene [22], as well as the fracture and failure of graphene and carbon nanotubes with multiple vacancies [23] and Stone-Wales defects [23,24,25], the effect of grain boundaries on the mechanical properties of graphene has been largely neglected. In this paper, we address this outstanding problem using Molecular Dynamics and first-principles calculations.…”

mentioning

confidence: 99%

Anomalous Strength Characteristics of Tilt Grain Boundaries in Graphene

Grantab

Shenoy

Ruoff

2010

Science

778

671

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Graphene in its pristine form is one of the strongest materials tested, but defects influence its strength. Using atomistic calculations, we find that, counter to standard reasoning, graphene sheets with large-angle tilt boundaries that have a high density of defects are as strong as the pristine material and, unexpectedly, are much stronger than those with low-angle boundaries having fewer defects. We show that this trend is not explained by continuum fracture models but can be understood by considering the critical bonds in the strained seven-membered carbon rings that lead to failure; the large-angle boundaries are stronger because they are able to better accommodate these strained rings. Our results provide guidelines for designing growth methods to obtain sheets with strengths close to that of pristine graphene.

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“…It has been proposed that the precipitated Mg 2 Sn particles by Sn addition can provide more nucleation sites for Mg 17 Al 12 . [ 47 ] Thus, the Mg 17 Al 12 phase can precipitate, adhering to the Mg 2 Sn phase, [ 47–49 ] and the amount of dynamic precipitated Mg 17 Al 12 particles increases accordingly.…”

Section: Resultsmentioning

confidence: 99%

Tailoring Mechanical Properties of Mg–Al–Zn–Sn–Mn Alloy by Multipass Equal Channel Angular Pressing

et al. 2020

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Herein, the influence of equal channel angular pressing (ECAP) routes, i.e., A and Bc, on the microstructure and texture evolution of a Mg–3.7Al–0.7Zn–0.8Sn–0.4Mn (wt%) alloy is investigated by scanning electron microscopy (SEM), electron backscatter diffraction (EBSD), and X‐ray diffraction (XRD). It is found that with increasing the number of ECAP passes, the area fraction of the dynamically precipitated secondary‐phase particles increases, whereas particle size becomes larger. After four and six passes of ECAP via route A, shear deformation induced by ECAP promotes the incline of c‐axes toward extrusion direction (ED). The optimum room temperature (RT) mechanical properties (yield strength of ≈225 MPa, ultimate tensile strength of ≈312 MPa, and elongation to fracture of ≈31.9%) are obtained after four passes of ECAP at 200 °C via route A. The improved strength results from fine dynamic recrystallization (DRX)/ed grains, nanoscale secondary‐phase particles, and basal texture. Herein, it is indicated that Mg–Al–Zn–Sn alloys have great potential as low‐cost high‐strength‐ductility wrought Mg alloys.

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Effects of Sn content on the microstructure and mechanical properties of Mg–7Zn–5Al based alloys

Cited by 53 publications

References 25 publications

Effect of Friction Stir Welding Processon Mechanical Properties and Microstructure of ZE42 Magnesium Alloy

Effect of Friction Stir Welding Processon Mechanical Properties and Microstructure of ZE42 Magnesium Alloy

Anomalous Strength Characteristics of Tilt Grain Boundaries in Graphene

Tailoring Mechanical Properties of Mg–Al–Zn–Sn–Mn Alloy by Multipass Equal Channel Angular Pressing

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