Microstructure of In Situ Al₃Ti_0.4Zr_0.6p/Al Fabricated with Electromagnetic Field

Abstract:

The K₂TiF₆ ,K₂ZrF₆ powder and aluminum were selected as the raw materials to in situ synthesize the particulates reinforced aluminum matrix composites. During the fabrication process the electromagnetic field was imposed. The atomic ratio of Al/Ti/Zr in the particulates is determined as 3/0.4/0.6. The Al₃Ti_0.4Zr_0.6 is a new kind of intermetallic compound, some properties of which fall in between those of Al₃Ti and Al₃Zr. Electromagnetic field plays an important part in fining particles and promoting their uniform distribution. When the electromagnetic induced intensity is 0.05T the particles have 0.5-2μm average size and uniform distribution in matrix. The crystal grains of matrix resemble equiaxed ones. The average size of grains are nearly 100μm, 50μm and 25μm when the electromagnetic induced intensities are 0, 0.025T and 0.05T seperately.

• Periodical: Advanced Materials Research (Volumes 284-286)
• Pages: 2280-2283
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.284-286.2280
• Online since: July 2011
• Authors: Gui Rong Li, Xun Yin Zhang, Yi Nan Zhao, Fei Yuan, Ting Wang Zhang, Hong Ming Wang, Yu Tao Zhao
• Keywords: Electromagnetic Field (EMF), In Situ Composite, Intermetallic Compound (IMC), Particulates

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