Microstructure Refinement by Y₂O₃ in Semisolid A356 Alloy

Abstract:

The semisolid A356 alloy slurry, which was grain-refined by Y₂O₃, was manufactured by low superheat pouring. The effects of grain-refine on the morphology and the grain size of the primary phase in semisolid A356 alloy were researched. The results indicated that semisolid A356 alloy contained Y₂O₃ with particle-like and rosette-like primary phases could be prepared by low superheat pouring. The grain size and particle morphology of primary phase in semisolid A356 alloy were markedly improved by Y₂O₃. The refining mechanism of Y₂O₃ on the morphology and the grain size of the primary α phase in semisolid A356 alloy was delved.

• Periodical: Advanced Materials Research (Volumes 311-313)
• Pages: 666-669
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.311-313.666
• Online since: August 2011
• Authors: Zheng Liu, Xiao Mei Liu, Yong Mei Hu
• Keywords: A356 Aluminum Alloy, Refinment, Semi-Solid, Y₂O₃

References

[1] W. S. Miller, L. Zhuang, J. Bottema: Mater. Sci. Eng. Vol. 280A (2000), p.37

[2] H. Z. Ye: J. Mater. Eng. Perform. Vol. 12(2003), p.288

[3] A. Knuutinen, K. Nogita, S. D. McDonald: J. Light Met. Vol. 12(2001), p.29

[4] H.K. Yi, D. Zhang, Mater. Lett. Vol. 57(2003), p.2523

[5] C. L. Xu, Q. C. Jiang, Y. F. Yang: J. Alloys Compd. Vol. 422(2006), p. L1

[6] X. R. Zuo, L. X. Li, Z. G. Zhong: Foundry Technology Vol. 28(2007), p.57

[7] A. K. Prasada Rao, K. Das, B. S. Murty: Materials Letters Vol. 62 (2008), p.273

[8] M. Hosseinifar, D. V. Malakhov: Metall. Mater. Trans. Vol. 40A (2009), p.825

[9] Z. Liu, Y. M. Hu: Rare Metals Vol.27(2008), p.536

[10] Y. G. Liu, P. M. Zhang, G. Chen: Nonferrous Metals Vol. 57(2005), p.15

[11] Z. Q. Zheng, X. G. Xiong, R. X. Yi: Nonferrous Metals Vol. 62(2010), p.6

[12] Z. Liu, Y. M. Hu, X. M.Liu: Acta Metallurgica Sinica Vol.23(2010), p.277