The Study on TiAl Based Alloy Blade Casting Structure by Bottom Pouring Vacuum Casting

Abstract:

In this paper, the bottom pouring vacuum suction casting is used, and the TiAl-based alloy blade with a certain flexivity, the brim thickness 1.5mm, and the blade Falcon with high 8mm, width 10mm, length 27mm was obtained. The structures of this blade are studied. The grain sizes are different from bottom to top, in bottom position, the blade leaves structure have the equiaxed, and the central part have the columnar crystals. The TiAl-based alloy structures have fully lamellar. Comparing with different position structures, the bottom position TiAl based alloy structure have the least lamellar space, is about 0.13μm; the average space of top lamellar structure is about 0.38μm; the central region of the lamellar spacing slightly larger than the bottom area.

• Periodical: Advanced Materials Research (Volumes 503-504)
• Pages: 400-403
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.503-504.400
• Online since: April 2012
• Authors: Xi Cong Ye, Wei Guang Zhao, Wen Jun Liu, Shuang Qing Tang, Zi Fan Fang
• Keywords: Blade, Structure, Suction Casting, TiAl-Based Alloy

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