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The Study on TiAl Based Alloy Blade Casting Structure by Bottom Pouring Vacuum Casting
Advanced Materials Research, 2012In 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.
Xi Cong Ye +4 more
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Fracture behaviour of cast TiAl based intermetallic alloys [PDF]
, 2013 The γ -TiAl based intermetallic alloys have received considerable attention as candidate materials for high-temperature aerospace applications, power generation and automotive industry, with the efforts being directed toward the replacement of Ni-based superalloys in many interesting applications.
BROTZU, Andrea +2 more
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Influence of oxygen on solidification behaviour of cast TiAl-based alloys
Intermetallics, 2007Abstract The influence of oxygen on solidification behaviour of cast TiAl-based alloys containing 40–48 at.% of Al was studied. Twelve alloys with fixed Ti:Al ratios ranging from 1.08 to 1.5 and oxygen content of 0.1, 0.8 and 1.5 at.% were prepared by induction melting and casting in a cold crucible under protective atmosphere.
J. Zollinger +3 more
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Interactions between TiAl alloys and yttria refractory material in casting process
Journal of Materials Processing Technology, 2010Abstract In this work, U-shaped yttria ceramic crucibles have been prepared to melt Ti–47Al (at.%) alloy in a vacuum induction furnace, in order to simulate the worst practical situation with respect to the interactions between TiAl alloy and yttria refractory material.
Cui Renjie +3 more
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Superplastic behavior of a TiAl alloy in its as-cast state
Materials Research Bulletin, 2002Abstract Superplastic behavior of a TiAl alloy was investigated in a temperature range between 800 and 1000°C and at a strain rate of 1×10 −4 s −1 . The results show that the present alloy possesses very good superplasticity even in its as-cast state. A tensile elongation of 628% was obtained at 850°C.
Bin Zhang, J.N Wang, Jie Yang
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Inhomogeneous microstructure in highly alloyed cast TiAl-based alloys, caused by microsegregation
Scripta Materialia, 2005Abstract This paper describes the segregation behaviour of two TiAl alloys containing refractory metal additions. This includes the coring of the refractory metal additions in the β dendrites and the formation of large peritectic α p in the interdendritic liquids.
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Recent research and development of mould materials for casting TiAl alloys
Materials Science and Technology, 2019Intermetallic TiAl alloys are new generation high-temperature material. However, extensive application of TiAl alloys is hindered by some disadvantages, especially the high processing cost. Currently, precision casting is an effective method to manufacture TiAl components with complex shape.
Jianglei Fan +8 more
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Efect of Cyclic Heat Treatment on Cast Structure of TiAl Alloy
Key Engineering Materials, 2013The subject of the article is focused on the refining of the cast structure of gamma TiAl–2Nb alloy using cyclic heat treatment and on the analysis of the grain refining mechanism. Microstructure evolution after applied cycles of heat treatment was characterized using light, laser and electron microscopy and using microhardness tests.
Martin Petrenec +3 more
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Tensile Properties of a Cast TiAl Alloy with Directional Lamellar Microstructures
Advanced Materials Research, 2013A cast TiAl alloy with directional γ-TiAl/α2-Ti3Al lamellar microstructure showed excellent strength retention at high temperatures and distinguished ambient ductility level as well. But both the ductility and strength at room temperature exhibited somewhat undulation.
Sheng Li +3 more
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The Study on TiAl Based Alloy Blade Casting Structure by Bottom Pouring Vacuum Suction Casting
Applied Mechanics and Materials, 2013In this paper, the bottom pouring vacuum suction casting is used, and the TiAl-based alloy blade with good face quality was obtained. Bottom pouring vacuum suction casting obtained Ti-47Al-5Nb-0.5Si alloy fine structure, the average grain size is 20um or less. Metal permanent forced cooling effect increases the undercooling degree, and the formation of
Xi Cong Ye, Wei Guang Zhao
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