Morphology and properties of Mg2Si and Mg2(SixSn1−x) reinforcements in magnesium alloys

Wang, Ying; Guo, Xuefeng; Yang, Wenpeng; Zhang, Jianxin

doi:10.1080/02670836.2017.1322370

Cited by 5 publications

(5 citation statements)

References 24 publications

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“…Mg 2 (Si, Sn) phase is more ductile in nature than Mg 2 Si phase. 33 Figure 14 shows the Young's modulus (YM) values of the alloys at various processing stages. In as-cast stage, microalloying Sn has decreased the YM of the Al-Mg-Si alloy.…”

Section: Tensile Propertiesmentioning

confidence: 99%

Structure–Property Correlation of Al–Mg–Si Alloys Micro-alloyed with Sn

Baruah¹,

Borah²

2021

Inter Metalcast

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Microstructure and mechanical properties of the cast and wrought Al-Mg-Si alloy micro-alloyed with 0.04 wt% and 0.08 wt% Sn were investigated at various processing conditions, viz. as-cast, solutionised, homogenised, hot rolled and peak-aged. Additionally, fracture surfaces of the alloys were also examined in the as-cast, peak-aged cast and peak-aged rolled conditions. It was observed that 0.04 wt% Sn favours the formation of a lamella-like eutectic Al ? Mg 2 Si, whereas 0.08 wt% Sn favours the formation of plate/rod-like Mg 2 Si. The formation of the former deteriorated the hardness and tensile strength, but improves the ductility, whereas the formation of the later was found to contribute to the hardness, tensile strength as well as ductility of the Al-Mg-Si alloy. Homogenisation treatment had reduced the hardness of all the alloys to the lowest value due to the dissolution and spheroidisation of the intermetallic phases. However, hot rolling had significantly increased the hardness, tensile strength and ductility of the alloys. Thus, the increase in hardness, tensile strength and ductility were more prominent in the peakaged rolled alloys relative to the peak-aged cast alloys. At the studied processing stages, the hardness and tensile strength of Al-Mg-Si alloy were found to decrease with the addition of 0.04 wt% Sn and increase with the addition of 0.08 wt% Sn. However, the ductility increased with Sn addition, and the increment was more prominent when micro-alloyed with 0.04 wt% Sn. Improvement in ductility in 0.04 wt% Sn alloy could be attributed to the formation of script-like Al(Fe, Mn)Si phase, whereas in 0.08 wt% Sn alloy could be attributed to the formation of ductile Mg 2 (Si, Sn) phase. Furthermore, the fractography study had revealed that the fracture in the alloys was mainly developed by the cracking of Al(Fe, Mn)Si intermetallic particles. The fractures mode in the as-cast and peak-aged cast alloys was mainly by transgranular brittle with a cleavage fracture surface, whereas in the peak-aged rolled alloys was mainly by transgranular ductile with a dimpled fracture surface.

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Section: Tensile Propertiesmentioning

confidence: 99%

Structure–Property Correlation of Al–Mg–Si Alloys Micro-alloyed with Sn

Baruah¹,

Borah²

2021

Inter Metalcast

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“…One promising approach is through the substitution solid solution. For instance, Wang et al [19] found that the plasticity of Sn-doped Mg 2 Si is superior to that of a pure Mg 2 Si phase. Pb, as a member of the IVA family in the periodic table alongside Si, exhibits the lowest electronegativity among elements within this group [20].…”

Section: Introductionmentioning

confidence: 99%

Morphology and Properties of Mg2Si Phase Modified by Pb in As-Cast Mg-2.5Si-xPb Alloys

Chen,

Yang,

Cui

et al. 2024

Materials

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Pb plays an important role in determining the morphologies and mechanical properties of the Mg2Si phase in Mg-2.5Si-xPb alloys. As the amount of Pb increases from 0.4 wt.% to 1 wt.%, the primary Mg2Si phase is refined during solidification. Its morphologies transform from equiaxed-dendrite to polygonal and finally to roughly circular. The key reason for morphology evolution is the preferential adsorption of Pb atoms on Mg2Si {100} surfaces to suppress the growth rate along the ⟨100⟩ directions, which is demonstrated by the adsorption model based on first principles. In addition, the hardness of the Mg2Si phase decreases with the increasing solution content of Pb according to the results of the nanoindentation. With the addition of Pb at 1 wt.%, Pb content in the primary Mg2Si phase reaches a maximum of 0.4 wt.%, and the hardness of the primary Mg2Si phase reaches a minimum of 3.64 GPa. This reduction in hardness is attributed to the augmented ionic bond ratio resulting from the solution of Pb, which concurrently enhances the toughness of the Mg2Si phase.

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“…It has technical advantages in some fields. The industrialization process of 3D printing is accelerated obviously, especially the technology and application of SLA (Stereolithography) and DLP (digital light processing) have been expanded and deepened, and its industry has occupied a great proportion of the 3D printing market [1][2][3].…”

Section: Introductionmentioning

confidence: 99%

The Development of SLA (Stereolithography) and DLP (Digital Light Processing) Technology in China

2018

ATCP

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The overall market for 3D printing industry reached 2.7 billion dollars in China, in 2017. The 3D printing market is growing rapidly in China, in which SLA and DLP print account for a large proportion. Although some highend technology fields are still occupied by well-known foreign enterprises, with the government's policies support for 3D printing, the influx of venture capital funds, the attention to intellectual property rights, SLA and DLP technology are increasing a high level in some areas. The application of SLA and DLP technology extends from traditional manufacturing industry to new fields with higher added value, such as health care.

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Morphology and properties of Mg₂Si and Mg₂(Si_xSn_1−x) reinforcements in magnesium alloys

Cited by 5 publications

References 24 publications

Structure–Property Correlation of Al–Mg–Si Alloys Micro-alloyed with Sn

Structure–Property Correlation of Al–Mg–Si Alloys Micro-alloyed with Sn

Morphology and Properties of Mg2Si Phase Modified by Pb in As-Cast Mg-2.5Si-xPb Alloys

The Development of SLA (Stereolithography) and DLP (Digital Light Processing) Technology in China

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