Effect of vacuum degree and T6 treatment on the microstructure and mechanical properties of Al–Si–Cu alloy die castings

Cao, Hong‐Tao; Sun, Qicai; Pu, Qingqing; Wang, Luhan; Huang, Mengtao; Luo, Ziwei; Che, Junqi

doi:10.1016/j.vacuum.2019.109063

Cited by 29 publications

(5 citation statements)

References 33 publications

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“…according to the literatures [12,14], it is possible to be attributed to the morphology, size and volume fraction of eutectic Si phase. Whatever, comparing with the tensile properties of casting specimens reported in literatures [8][9][10][11][12], ZL114a alloy component produced by the plaster-mold method still show excellent mechanical properties.…”

Section: Tensile Propertiesmentioning

confidence: 71%

“…ZL114a alloy (called in China norm), a typical al-Si casting alloy, is usually used to fabricate the casting component with complex shape and thin-wall structure. in order to ensure the quality of casting component, pressure and vacuum casting methods are employed [6,7], and the results indicate that the fitting pressure and vacuum degree can improve the tensile properties [8,9]. So far, several researchers have focused on improving the microstructure and mechanical properties of al-Si alloy through alloying, heat treatment and other methods [10][11][12][13].…”

Section: Introductionmentioning

confidence: 99%

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Archives of Metallurgy and Materials

2022

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The tensile properties and microstructures of ZL114a alloy component with a complex shape are investigated at room temperature and 200°C, using the tensile tests, scanning electron microscopy and electron backscattering diffraction. both thin wall and thick structure exhibit excellent properties, of which max ultimate tensile strength and elongation at break reach 314 Mpa and 2.5% at room temperature, respectively. The ultimate tensile strengths of thin wall are 40 Mpa and 25 Mpa greater than those of thick structure at room temperature and 200°C, respectively. Moreover, the eutectic Si phases of thin wall exhibit a predominantly spherical morphology while of the morphology of thick structure are rod-like, resulting in the different mechanical properties between thin wall and thick structure. The fracture morphologies of thin wall and thick structure are studied to explain the difference in performance between thin wall and thick structure.

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Section: Tensile Propertiesmentioning

confidence: 71%

Section: Introductionmentioning

confidence: 99%

Archives of Metallurgy and Materials

2022

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“…Pengujian metallography dilakukan untuk pengamatan struktur mikro daerah pangkal, tengah, dan ujung pada hasil coran daur ulang aluminium pola styrofoam dengan beberapa variasi temperatur tuang 660, 710 dan 760°C. Gambar 8 menunjukkan hasil struktur mikro yang berwarna putih adalah matrik Al dan gelap merupakan eutectic Si [16]. Parameter temperatur tuang 660 o C menghasilkan Secondary Dendritic Arm Spacing(SDAS) Struktur eutectic Si paling halus dan rapat yang terjadi pada daerah ujung material, tetapi penyebarannya kurang merata dan terlihat adanya aglomerasi eutectic Si yang cukup banyak yang disajikan pada gambar 8(c).…”

Section: Struktur Mikrounclassified

Pengaruh Variasi Temperatur Tuang pada Pengecoran Daur Ulang Al-Si terhadap Struktur Mikro dan Kekerasan dengan Pola Styrofoam

Purwanto

Darmanto

Kholis

et al. 2021

JMPM

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Penelitian ini bertujuan mengetahui pengaruh temperatur tuang pada pengecoran daur ulang Al-Si terhadap struktur mikro dan kekerasan dengan menggunakan pola Styrofoam. Material aluminium dari velg bekas diplih sebagai bahan utama dalam penelitian ini. Parameter yang digunakan dalam pengecoran adalah temperatur tuang dengan variasi 660, 710, dan 760oC. Pengamatan struktur mikro dan pengukuran SDAS menggunakan mikroskop optic dan image analysis software. Pengujian kekerasan dilakukan untuk mengetahui sifat mekanis material. Hasil pengujian menunjukkan SDAS semakin kasar atau meningkat 56 % pada temperatur tuang 760o C sehingga mengalami peningkatan kekuatan mekanik sebesar 2.59%.

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“…These components with vast projection areas and thin walls, cannot be heat-treated after casting, making it extremely challenging to improve their mechanical performance while ensuring castability. Research and development of high-performance die-casting aluminum alloys exempt from heat treatment has become a hot topic in the industry from the point of view of cost decreasing and benefit increasing [8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Modifying the Microstructure and Mechanical Properties of Non-Heat Treated HPDC AlSi10MnMg Foundry Alloy via Incorporation of TiB<sub>2</sub> Particles and Sc

Shareef,

Liu,

Zhao

et al. 2024

KEM

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The demand for structural lightweight in a variety of industries, particularly the automobile industry, has driven the development of heat-free die-cast aluminum alloys with excellent properties. Utilizing lightweight materials, such as Al-Si alloys has several benefits, including higher overall performance in automobiles and other industries, increased heat resistance efficiency, decreased emissions, and reduced weight. The purpose of this study is to modify the microstructure and enhance the mechanical properties of high-pressure die-casting (HPDC) AlSi10MnMg foundry alloy by incorporation of TiB2 and Sc without any heat treatment. The results showed that the HPDC process significantly refines the grain structure and AlSiMnFe intermetallic compounds, transforming the eutectic morphology from sharp to rounded, and 93% enhancement in elongation at the optimum content (0.018 wt.%) of TiB2. While the hardness of the alloy was improved by 15.7% with the addition of 0.03wt.% TiB2. TiB2 incorporation refines the grain structure and AlSiMnFe phases, while depressing externally solidified crystals (ESCs). The HPDC process refines Al3Sc phases as well as AlSiMnFe phases while increasing yield strength due to Al3Sc strengthening effects. After 0.5wt.% Sc addition in 0.018wt.% TiB2-AlSi10MnMg alloy, the YS, and EL reached the maximum of 196MPa and 9.93% respectively.

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Effect of vacuum degree and T6 treatment on the microstructure and mechanical properties of Al–Si–Cu alloy die castings

Cited by 29 publications

References 33 publications

Archives of Metallurgy and Materials

Archives of Metallurgy and Materials

Pengaruh Variasi Temperatur Tuang pada Pengecoran Daur Ulang Al-Si terhadap Struktur Mikro dan Kekerasan dengan Pola Styrofoam

Modifying the Microstructure and Mechanical Properties of Non-Heat Treated HPDC AlSi10MnMg Foundry Alloy via Incorporation of TiB<sub>2</sub> Particles and Sc

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