Second-Phase Precipitates and Their Influence on Mechanical and Work Hardening Behavior of Mg-Al-Sn Alloy

Vignesh, P.; Venkatesh, G.; Kumaran, S.

doi:10.1007/s11665-022-06631-9

Cited by 6 publications

(2 citation statements)

References 43 publications

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“…Due to the increased volume of grain boundaries (finer grains) and fine scale precipitates in the T5 conditions, dislocation motion is highly forbidden, which leads to the formation of dislocation tangles. There are additional dislocation pileups around a Si particle, and these act as an effective barrier to the dislocation motion [53,54]. After T6, the particles and microstructure coarsen, leading to the loss of strength and consequently a higher erosion rate [55].…”

Section: Erosionmentioning

confidence: 99%

Effect of Build Orientation and Heat Treatment on Erosion Behavior of Al10SiMg Fabricated Using Laser Powder Bed Fusion

Angolkar,

Manzoor Hussain

2023

Tribol. Ind.

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Laser Powder Bed Fusion (LPBF) is a form of additive manufacturing that can directly make metal components and has begun to be employed in a variety of industrial situations. Moreover, the erosion characteristics of SLM-produced items have been documented relatively infrequently. In the current work, the erosion behavior of a heat-treated Al-Si-10% Mg alloy generated via laser powder bed fusion (LPBF) has been investigated. The samples were printed in three directions (horizontal (0o), vertical (90o), and inclined (45o) on the build platform using the Direct Metal Laser Sintering (DMLS) system (EOS M 290) machine. Al%Si-10%Mg samples were given treatment (T5, T6). Optical and scanning electron microscopes (SEM) were used to examine the microstructure under both printed and heat-treated conditions. Energy Dispersive Spectroscopy (EDS) and X-ray Diffraction (XRD) were used to investigate the alloy's elemental composition and compound production. The erosion test was executed in each of the three orientations, plus heat-treated samples and as-printed samples. The selected input parameters were impingement angle and flow velocity. The erosion rate was examined and contrasted across orientations for printed and heat-treated conditions to establish the best orientation. The post-eroded surface was analysed using SEM, EDS, and XRD to evaluate possible erosion processes. The key findings were: T5 heat-treated samples sustain well and have the least mass loss; Horizontal (0°) oriented samples undergo less erosion compared to other orientations; T6 heat-treated samples show maximum erosion on printed samples, and hence it is not recommended. T5 heat treatment is proven to be superior in providing high erosion resistance, followed by printed and T6 heat-treatment, respectively. The heat treatment effects are more significant than the orientation effects in determining the erosion resistance of the Al10SiMg alloy. The erosion mechanisms, such as ploughing, melting, and cratering, were identified.

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Section: Erosionmentioning

confidence: 99%

Effect of Build Orientation and Heat Treatment on Erosion Behavior of Al10SiMg Fabricated Using Laser Powder Bed Fusion

Angolkar,

Manzoor Hussain

2023

Tribol. Ind.

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“…Mg-Sn-based alloys mainly include Mg-Sn-Zn, Mg-Sn-Al, Mg-Sn-Ca alloys, and so on [9][10][11][12]. Among them, Mg-Sn-Zn alloys demonstrate better high strength and heat-resistant properties [13][14][15]. In order to further increase the strength of the Mg-Sn-Zn alloys at elevated temperatures, researchers have focused on the Zn/Sn mass ratio and micro-alloying in Mg-Sn-Zn alloys.…”

Section: Introductionmentioning

confidence: 99%

Study on the Microstructure of Mg-4Zn-4Sn-1Mn-xAl As-Cast Alloys

Liu,

Du,

Peng

et al. 2023

Materials

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In this study, the microstructure of the Mg-4Zn-4Sn-1Mn-xAl (x = 0, 0.3 wt.%, denoted as ZTM441 and ZTM441-0.3Al) as-cast alloys was investigated using scanning electron microscopy (SEM), focused-ion/electron-beam (FIB) micromachining, transmission electron microscopy (TEM), and high-angle annular dark-field scanning transmission electron microscopy (HAADF-STEM). The analysis results revealed that the microstructure of the ZTM441 and ZTM441-0.3Al as-cast alloys both mainly consist of the α-Mg matrix, skeleton-shaped MgZn2 eutectic texture, block-shaped Mg2Sn, and Zn/Sn-rich nanoscale precipitate bands along the grain boundary and the interdendrite. Nanoscale α-Mn dispersoids formed in the grain in the ZTM441 alloy, while no α-Mn formed in the ZTM441-0.3Al alloy instead of nanoscale Al3Mn2 particles. In the ZTM441 as-cast alloy, part of the Zn element is dissolved into the α-Mn phase, and part of the Mn element is dissolved into the MgZn2 phase, but in the ZTM441-0.3Al alloy, there are no such characteristics of mutual solubility. Zn and Mn elements are easy to combine in ZTM441 as-cast alloy, while Al and Mn are easy to combine in ZTM441-0.3Al as-cast alloy. The Mg-Zn phases have not only MgZn2-type crystal structure but also Mg4Zn7- and Mg149Zn-type crystal structure in the ZTM441-0.3Al as-cast alloy. The addition of Al changes the combination of Mn and Zn, promotes the formation of Al3Mn2, and the growth of the grain.

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Effect of SiC on Microstructure and Mechanical Properties of Nano-SiC/Mg-8Al-1Sn Composites

Li,

et al. 2024

J. of Materi Eng and Perform

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Second-Phase Precipitates and Their Influence on Mechanical and Work Hardening Behavior of Mg-Al-Sn Alloy

Cited by 6 publications

References 43 publications

Effect of Build Orientation and Heat Treatment on Erosion Behavior of Al10SiMg Fabricated Using Laser Powder Bed Fusion

Effect of Build Orientation and Heat Treatment on Erosion Behavior of Al10SiMg Fabricated Using Laser Powder Bed Fusion

Study on the Microstructure of Mg-4Zn-4Sn-1Mn-xAl As-Cast Alloys

Effect of SiC on Microstructure and Mechanical Properties of Nano-SiC/Mg-8Al-1Sn Composites

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