On the improved tensile strength and ductility of Mg--Sn--Zn--Mn alloy processed by aging prior to extrusion

Zhong, Liping; Wang, Yongjian; Dou, Yuchen

doi:10.1016/j.jma.2019.07.007

Cited by 59 publications

(12 citation statements)

References 60 publications

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“…In terms of texture, alloys displayed typical basal textures, while the texture intensity was apparently weakened by the addition of Ca. Previous studies have reported that coarse particles larger than 1 µm in size can trigger the particle stimulation nucleation (PSN) mechanism, reduce the orientation correlation between recrystallization grains and present grains, and thus weaken the texture [16][17][18]. It is noteworthy that Ca-modified alloys contain particles larger than 1 µm in size, and the basal poles of recrystallized grains disperse away from the normal direction more so than those of substructured and deformed grains (Figure 7).…”

Section: Microstructural Characteristicsmentioning

confidence: 95%

Enhanced Mechanical Properties and Isotropy of Mg-2Al-0.8Sn Alloy through Ca Addition

Yuan

Wang

et al. 2021

Materials

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Calcium (Ca), with abundant and cheap reserves, is a potential element to facilitate the further application of Mg-Al-Sn based alloys. Here, effects of Ca content on the microstructure and tensile properties of Mg-2.0Al-0.8Sn (wt.%) alloys were systematically studied. The experimental results illustrated that the strength, ductility and isotropy of the alloys improved simultaneously with the increase of Ca content. The better ductility and isotropy could be contributed to the weakened texture via particle stimulation nucleation mechanism. The higher strength benefited from the combination of finer grains, more precipitates and residual dislocation density. Eventually, the Mg-2.0Al-0.8Sn-0.5Ca (wt.%) alloy showed the best room-temperature balance of strength and ductility with a yield strength of ∼226.0 MPa, an ultimate tensile strength of ∼282.4 MPa and a fracture elongation of ∼20.2%, which has huge potential as an applicable low-cost high-performance magnesium alloy.

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Section: Microstructural Characteristicsmentioning

confidence: 95%

Enhanced Mechanical Properties and Isotropy of Mg-2Al-0.8Sn Alloy through Ca Addition

Yuan

Wang

et al. 2021

Materials

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“…Comparing the present work with other mechanical properties of the Mg-Sn-Zn alloys (Figure 11), this work successfully prepared the TZK alloy with higher plasticity while maintaining a relatively high strength. 1,10,[50][51][52][53][54][55][56][57][58][59][60][61][62][63][64][65][66] Figure 12 showed the tensile fracture morphology of TZK alloys under different deformation conditions. Obviously, the fracture mode of the DT-1 alloy was ductile fracture, as its fracture morphology was composed of deep and uniform dimples.…”

Section: Mechanical Propertiesmentioning

confidence: 99%

The microstructure and mechanical properties of Mg-Sn-based alloy processed by differential-thermal equal channel angular pressing

Guo,

Li,

Zhou

et al. 2024

Materials Science and Technology

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Numerous studies of equal channel angular pressing (ECAP) considered the sample and mould temperatures as a whole, ignoring their different control effects during ECAP deformation. In this paper, the microstructure and mechanical properties of Mg-Sn-Zn-Zr (TZK) alloys were investigated after ECAP deformation at different mould and sample temperatures. The results revealed that higher mould temperatures controlled the actual deformation temperatures and lower sample temperatures prevented grain growth during preheating. After ECAP deformation at mould temperature of 300 °C and sample temperature of room temperature, the alloy consisted of abundant dynamical recrystallisation grains, with an elongation of 30% and a strength of 251.49 MPa. This study would provide a novel idea for the optimisation of the ECAP process.

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“…Mg-Zn series alloy is one of the most typical precipitation hardening Mg alloys [8][9][10]. When Zn content is about 6 wt.% (hereafter, all compositions are in weight percent unless stated otherwise), the alloy has a significant aging strengthening effect [11]. In addition, research [12] indicates that alloy with lower Zn content has better corrosion resistance than alloy with higher Zn content.…”

Section: Introductionmentioning

confidence: 99%

Effect of Heat Treatment on Microstructure and Mechanical Properties of Mg-5Zn-1Mn Alloy Tube

Cao

et al. 2020

Metals

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The effects of heat treatment on the microstructure, mechanical properties and electrochemical property of the as-extruded Mg-5Zn-1Mn (ZM51) alloy tube are investigated by optical microstructure (OM), X-ray diffractometer (XRD), scanning electron microscopy (SEM), transmission electrical microscope (TEM), uniaxial tensile test, and electrochemical test. The results show that the as-cast structure is a typical dendritic structure, mainly composed of α-Mg and Mg7Zn3 eutectic compounds. After homogenization, most of Mg7Zn3 eutectic phases are dissolved in the Mg matrix. During the extrusion process, the ZM51 alloy has undergone complete dynamic recrystallization and has a good elongation, reaching 21.4%. T6, especially T4 + double aging treatment, can significantly improve the mechanical properties of the as-extruded tube. The microstructure reveals that the precipitation strengthening of the finely dispersed MgZn2 precipitates is the main reason for the strength increase. The fracture micromorphology of the as-extruded tube is mainly composed of dimples and cleavage facets, which is a typical ductile fracture. The fracture mode of the as-aged alloy tubes belongs to cleavage fracture. In addition, the electrochemical test results show the solution-treated ZM51 alloy tube has the best corrosion resistance. The improvement of corrosion resistance is mainly due to the microstructure uniformity and low phase volume fraction.

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On the improved tensile strength and ductility of Mg--Sn--Zn--Mn alloy processed by aging prior to extrusion

Cited by 59 publications

References 60 publications

Enhanced Mechanical Properties and Isotropy of Mg-2Al-0.8Sn Alloy through Ca Addition

Enhanced Mechanical Properties and Isotropy of Mg-2Al-0.8Sn Alloy through Ca Addition

The microstructure and mechanical properties of Mg-Sn-based alloy processed by differential-thermal equal channel angular pressing

Effect of Heat Treatment on Microstructure and Mechanical Properties of Mg-5Zn-1Mn Alloy Tube

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