The Role of Fe on the Grain Refinement of High Purity Aluminium

Abstract:

The role of Fe on the grain refinement of high purity aluminium (HPAl) was investigated after adding commercial Al-5Ti-1B grain refiner rod. Experimental results show that with a 0.08% Fe addition, the grain structure at chill zone of the HPAl sample changes from coarse to fine equiaxed grains. More importantly, the grain size observed at the centre of the HPAl sample decreased from 500±50µm to 206±30µm. The improvement has been attributed to the interfacial segregation and solute concentration of the Fe at the solid-liquid interface.

• Periodical: Advanced Materials Research (Volumes 538-541)
• Pages: 2264-2268
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.538-541.2264
• Online since: June 2012
• Authors: Yi Jie Zhang, Nai Heng Ma, Brian J. McKay, Xian Feng Li, Hao Wei Wang
• Keywords: Aluminum (Al), Grain Refinement, Nucleation

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