Microstructure Evolution of A356 Alloy Under Modification by Antimony

• Abdelfattah. A. Khalil

  Materials Science Department, Faculty of engineering, Omer Al Muktar university, ALBEIDA, LIBYA.

  Author

The effects of antimony (Sb) addition on the microstructure properties of Solidified A356 alloy were investigated. A356–X wt. %Sb (X = 0, 0.1, 0.2 and 0.3) alloys were fabricated using by the permanent mold process. Two different approaches to modification by solidification process have been pursued physically induced and chemically stimulated. The physical relies mainly on the use of external field, such as ultrasonic vibration, while the chemical rout depends primarily on addition of element, which is the subject of this research work. Antimony was used to modify the microstructure of A356 alloy. The effect of addition level of antimony on the solidification of the A356 alloy was investigated and the obtained samples were characterized by optical microscopy, scanning electron microscopy (SEM) and EDS X-ray analysis (EDS). The results showed that: 1)both the dendritic α-Al solid solution and eutectic silicon were significantly modified; 2) the dendritic primary aluminium became globular, and the plate-like or big spherical eutectic silicon turned into fibrous shape and small spheres during the solidification process. The mechanism of the microstructure evolution under inoculated by Sb element was also preliminarily discussed.

Annual Book of ASM Standard. 2005. Metallographic, Vol 9, pp. 620-630

Bian X., Wang W., Qin J.,2001, Liquid Structure of Al±12.5% Si Alloy Modified by Antimony, Materials Characterization 46, pp. 25- 29

Brandes E.A., Brooke G.B. (Eds.). 1998, Smithells Light Metals Handbook, Butterworth- Heinemann, OX, pp. 5-9, 117

Hao D., Siming X., Jie L., Yu W., Lu L., and Wenbin Y., 2020. Modification of Mg2Si Phase Morphology in Mg-4Si Alloy by Sb and Nd Additions. Journal of Materials Engineering and Performance, p 231

Jiana X., Meeka T.T., Hanb Q., 2006. Refinement of Eutectic Silicon Phase of Aluminium A356 alloy Using High-Intensity Ultrasonic Vibration, Scrip Materialia 54, pp. 893–896.

Jiana X., Xua H. , Meeka T.T., Hanb Q., 2005. Effect of Power Ultrasound on Solidification of Aluminium A356 alloy, Materials Letters 59, pp. 190– 193.

Karakosea E., Keskin M., 2009. Effect of Solidification Rate on the Microstructure and Micro Hardness of a Melt Spun Al–8Si–1Sb alloy. Journal of Alloys and Compounds 479 230–236.

Kazuhiro N., Arne K., 2001. Eutectic Growth pp. 205-216

KHAN S., ELLIOTT R.,1994, Effect of Antimony on the Growth of Kinetics of Aluminium-Silicon eutectic Alloys, journal of materials science, pp. 736 – 741.

Mode in Strontium, Antimony and Phosphorus Modified Hypoeutectic Al-Si Foundry Alloys. Materials Tranactions, Vol. 42, No, 3 PP. 393 to 396.

Muhammad S. U., 2Laminu S. K., and Abdulmumin A. A., 2024. Influence of Sodium Chloride Modifier on the Properties of Aluminium-Silicon Alloy Jmme, Vol.14.

Nataša N., Pavel K., Jan S., Tuong N. V., 2018. Influence of Ca, Sb and Heat Treatment on AlSi9CuMnNi alloy in Frame of their Properties from view of Machining. Matec Web of Conferences 244, 02003.

Polmear., I.J.,2006. Light Alloys from Traditional Alloys to Nanocrystals, Fourth Edition Melbourne, Australia,

Qiyang L. 1998, Effect of Antimony on the Growth Kinetics of High purity Al-Si Alloys, Scripta Materialia, Vol. 38, No. 7, pp. 1083–1089

Peng T., Jinshu L., Yixue Y., and Wanyao H., 2023. Microstructure and Mechanical Properties of Cast Al-15Mg2Si-8Si-Based alloy with Various Cr-Sb Ratio Addition, Journal of Materials Engineering and Performance p 773.

Prasada Rao A.K., Das K., Murty B.S., . Chakraborty M, 2008, On the Modification and Segregation Behavior of Sb in Al–7Si Alloy During Solidification, Materials Letters 62, pp. 2013–2016.

Puga H., Costaa S., Barbosa J., Ribeirob S., ProkicM.. 2011. Influence of Ultrasonic Melt Treatment on Microstructure and Mechanical Properties of AlSi9 Cu3 alloy, Journal of Materials Processing Technology,

Waly M. A. and Reif W., 1993, Thermal Analytical Son the Modification of Al- 7% Si with Addition of Sr & Na, 6th Arab International Aluminium Conference- ARAB AL 93, Cairo, 11-14, Dec.

Uzun O., Yılmaz F., Kolemen U., Bas N, 2011, Sb Effect on Micro Structural and Mechanical Properties of Rapidly Solidified Al–12Si alloy, Journal of Alloys and Compounds 509, pp. 21–26.

Yu-Chou T., Cheng-Yu C., Sheng-L. L., Chih-K. L., Jing-C L., S.W. Limc, 2009. Effect of Trace La Addition on the Microstructures and Mechanical Properties of A356 (Al–7Si–0.35Mg) aluminum alloys, Journal of Alloys and Compounds 487, p. 157–162

Zhu M., Yang G., Yao L., Cheng S, and Zhou Y , 2009. Influence of Al-Ti-B Addition on the Microstructure and Mechanical Properties of A356 alloys. State Key Rare Metals Vol. 28, No. 2, Apr 2009, p. 181

Zhongtao Z., Jie L., Hongyun Y., Jian Z., Tingju L., 2009. Microstructure Evolution of A356 Alloy Under Compound Field, Journal of Alloys and Compounds 484, pp. 458–462.

• pdf (الإنجليزية)

الحقوق الفكرية (c) 2025 Abdelfattah. A. Khalil (Author)

هذا العمل مرخص بموجب Creative Commons Attribution-NonCommercial 4.0 International License.