Effect of high-intensity ultrasonic treatment on microstructure, hardness and wear behaviour of the hypereutectic Mg-5Si alloy

Moussa, M. E.; Waly, Mostafa I.; El-Sheikh, A.M.

doi:10.1088/1757-899x/143/1/012037

IOP Conf. Ser.: Mater. Sci. Eng.

2016

DOI: 10.1088/1757-899x/143/1/012037

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Effect of high-intensity ultrasonic treatment on microstructure, hardness and wear behaviour of the hypereutectic Mg-5Si alloy

M. E. Moussa

Mostafa I. Waly

A.M. El-Sheikh

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“…Herein, Weibull [10] has introduced an empirical statistical distribution function, which could be implemented broadly to brittle materials such as metals and ceramics. Weibull distribution is one of the wellaccepted statistical analyses to optimize and examine reliability, reproducibility, completeness, and cogency of any results [1][2][3] . Furthermore, the Weibull analysis is used to interpret casting properties (e.g.…”

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Weibull analysis of fluidity and hardness of ultrasonically degassed secondary Al7Si0.3Mg aluminum alloy

Yüksel

2019

China Foundry

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I n foundry engineering, casting parameters, such as fluidity and turbulent filling directly affect the properties of the cast metals, i.e. hardness and tensile strength. Predicting these parameters can improve the entire casting process. Also, it is necessary to establish these variables in simulation techniques, and casting procedures, i.e. fluidity test and mechanical test [1]. Dong et al. [2] have investigated the effect of ultrasonic stirring on hardness and concluded that if porosities were not eliminated, the hardness values of the materials could not be increased, even if average grain diameter and eutectic silicon aspect ratio are both lowered. Moussa et al. [3] has established ascending hardness values on Mg 5 Si alloy being exposed to the ultrasonic degassing (UD) process with a 38% increase with regard to modification and refining of microstructural constituents. The variation of the mechanical properties of Al-Si alloys was investigated with solute addition and ultrasonic process. It is found that the solute addition has a great contribution to the hardness values of the alloy, and also

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Weibull analysis of fluidity and hardness of ultrasonically degassed secondary Al7Si0.3Mg aluminum alloy

Yüksel

2019

China Foundry

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Strontium-based additive for enhanced aluminum A356-reinforced Al₂O₃ composite mechanical properties and microstructures

Saputri,

Zulfia,

Hernandha

2024

Metall. Res. Technol.

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A stir-casting process has produced aluminum alloy A356 reinforced with Al2O3 metal matrix composites (MMCs). The strontium was added into molten Al A356 to improve the mechanical properties of composites. The strontium used varied from 0.046 wt.% to 0.070 wt.%, while Al2O3 was kept constant at 10 vf-%. This research aims to study the effect of Sr on the microstructure and mechanical properties of Al A356/Al2O3 composite. The A356 was melted at 800 °C and mixed with Al-5TiB, Al-5Sr, and Mg as a master alloy of the matrix, then flushed with argon to remove all the gas bubbles from liquid aluminum and stirred for 2 min afterward, it was poured with Al2O3 particles and stirred again for 3 min to distribute the Al2O3 particles in molten Al matrix. The composites produced then characterized both microstructural analysis and mechanical properties. The maximum strength, elongation, and hardness of composites were achieved at 0,046 wt.% Sr with the value of 185 MPa, 4.00%, and 45.3 HRB, while strength, elongation, and hardness of unreinforced were 101 MPa, 2,72%, and 40 HRB respectively and further addition of Sr mechanical properties decreased. The increase in the strength is due to the refinement of Mg2Si primary in the matrix.

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Effect of high-intensity ultrasonic treatment on microstructure, hardness and wear behaviour of the hypereutectic Mg-5Si alloy

Cited by 2 publications

References 15 publications

Weibull analysis of fluidity and hardness of ultrasonically degassed secondary Al7Si0.3Mg aluminum alloy

Weibull analysis of fluidity and hardness of ultrasonically degassed secondary Al7Si0.3Mg aluminum alloy

Strontium-based additive for enhanced aluminum A356-reinforced Al₂O₃ composite mechanical properties and microstructures

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Product

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About

Effect of high-intensity ultrasonic treatment on microstructure, hardness and wear behaviour of the hypereutectic Mg-5Si alloy

Cited by 2 publications

References 15 publications

Weibull analysis of fluidity and hardness of ultrasonically degassed secondary Al7Si0.3Mg aluminum alloy

Weibull analysis of fluidity and hardness of ultrasonically degassed secondary Al7Si0.3Mg aluminum alloy

Strontium-based additive for enhanced aluminum A356-reinforced Al2O3 composite mechanical properties and microstructures

Contact Info

Product

Resources

About

Strontium-based additive for enhanced aluminum A356-reinforced Al₂O₃ composite mechanical properties and microstructures