The Influence of Fe on Grain Refinement of Recycled A 356 Alloy Initially Refined by Al-5Ti-1B Master Alloy

Authors

  • Thee Chowwanonthapunya Faculty of International Maritime Studies, Kasetsart University, Chonburi 20230, Thailand
  • Chaiyawat Peeratatsuwan Faculty of Engineering and Technology, Rajamangala University of Technology Isan, Nakhonratchasima 30000, Thailand

DOI:

https://doi.org/10.48048/tis.2023.6393

Keywords:

A356 alloy, Al-5Ti-1B master alloy, Grain refinement, Macrostructure examination, Recycling, Residual iron

Abstract

This research investigated the effect of Fe on the grain refinement of the recycled A 356 alloy refined by Al-5Ti-1B master alloy using macrostructure examination and chemical composition analysis. Results showed that as recycling number increased, the grain refining performance of Al-5Ti-1B master alloy decreased, particularly in the subsequence recycling process. The decreased concentration of titanium and boron were responsible for the degraded grain refining effect in the recycled A356 alloy. Appropriate concentration of the residual iron in recycled A356 provided the grain refining effect which can compensate the degraded grain refining performance of Al-5Ti-1B master alloy. It is suggested that adding the additional Al-5Ti-1B grain refiner and an intentionally added iron of 0.3 wt. % should be a practical alternative to maintain the grain refining efficiency of recycled A356 alloy.

HIGHLIGHTS

  • Significant concern of the recycling process of A356 alloy is the degradation of the grain refining performance of Al-5Ti-1B grain refiner
  • The role of Fe on the grain refinement of Al-5Ti-1B grain refiner in the recycled A356 alloy is doubtful
  • The concentration reduction of titanium and boron was responsible for the degradation of the grain refining efficiency
  • Appropriate concentration of the residual Fe in recycled A356 alloy provides the grain refining effect
  • Adding the additional Al-5Ti-1B grain refiner and an intentionally added Fe of 0.3 % wt is suggested to be a practical alternative to maintain the grain refining efficiency of recycled A356 alloy


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References

H Zhang, G Chen, Z Zhang, Y Zhao, S Mu, J Xu and T Zhang. Study on the grain refinement of A356 alloy by Al-3 wt-% VN master alloy. Mater. Sci. Tech. 2020; 36, 819-26.

T Chowwanonthapunya and C Peeratatsuwan. Grain refining effect of Al-5Ti-1B master alloy on microstructures and mechanical properties of A356 alloy. Key Eng. Mater. 2019; 803, 17-21.

Y liu, C Wu, H Tao, X Lu, J Wang and X Sul. Microstructure and mechanical properties of Al-10Si alloy modified with Al-5Ti. China Foundry 2018; 15, 405-10.

R Guan and D Tie. A review on grain refinement of aluminum alloys: Progresses, challenges and prospects. Acta Metall. Sin. 2017; 30, 409-32.

H Singh, A Raina, M Irfan and U Haq. Effect of TiB2 on mechanical and tribological properties of aluminium alloys - a review. Mater. Today 2018; 5, 17982-8.

A Ahmad, MA Lajis and NK Yusuf. On the role of processing parameters in producing recycled aluminum AA6061 based metal matrix composite (MMC-AlR) prepared using hot press forging (HPF) process. Materials 2017; 10, 1098.

SK Das and W YIN. The worldwide aluminum economy: The current state of the industry. J. Miner. Met. Mater. Soc. 2007; 59, 57-63.

C Peeratatsuwan and T Chowwanonthapunya. Investigation of the grain refining performance of Al-5Ti-1B master alloy on the recycling process of A356. Mater. Sci. 2020; 51, 1346-52.

L Zhang, H Jiang, J Zhao and J He. Microstructure and grain refining efficiency of Al-5Ti-1B master alloys prepared by halide salt route. J. Mater. Process. Tech. 2017; 246, 205-10.

P Li, S Liu, L Zhang and X Liu. Grain refinement of A356 alloy by Al-Ti-B-C master alloy and its effecton mechanical properties. Mater. Des. 2013; 47, 522-8.

Y Zhang, H Wang, N Ma and X Li. Effect of Fe on grain refining of pure aluminum refined by Al5TiB master alloy. Mater. Lett. 2005; 59, 3398-401.

Y Zhang, N Ma, H Yi, S Li and H Wang. Effect of Fe on grain refining of pure aluminum refined by Al5TiB master alloy. Mater. Des. 2006; 27, 794-8.

Z Zhao, R Guan, X Guan, J Zhang, X Sun and H Liu. Effects of electromagnetic stirring, shearing, and extrusion on TiB2 and TiAl3 particles in Al-5Ti-1B(wt. %) Alloy. Mater. Manuf. Process. 2015; 30, 1223-8.

M Alipour and M Emamy. Structure and hardness of a super high strength aluminum alloy produced by strain-induced melt activation process. Mater. Des. 2011; 32, 4485-92.

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Published

2022-12-20

Issue

Vol. 20 No. 1 (2023): Trends in Sciences, Volume 20, Number 1, January 2023

Section

Research Articles

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