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Continuous Casting of TiAlNb Alloys with Different Velocities by Mixing Binary TiAl Ingot and Nb Wire
Author(s) -
Fang HongZe,
Chen RuiRun,
Chai Dong,
Yang YaoHua,
Su YanQing,
Ding HongSheng,
Guo JingJie,
Fu HengZhi
Publication year - 2017
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201700058
Subject(s) - materials science , microstructure , ingot , metallurgy , extrusion , fracture toughness , fracture (geology) , formability , lamellar structure , casting , grain size , composite material , mixing (physics) , alloy , physics , quantum mechanics
A method of continuous casting is used and the research investigates microstructure and mechanical properties under different drawing velocity ( R , mm/min). The results show that microstructure and composition measurement of different zones are uniform. The smallest grain size is 25.93 μm and formability is good with 0.5 R . Compressive strength is higher with 0.5R and maximum value is 1697MPa. Fracture toughness with 0.5 R improves about 35.7% which is 21.7MPa·m1/2. The fracture morphology is trans‐lamellar fracture and interface de‐lamination. The method is a feasible way to continuously cast the TiAl‐Nb alloys. The R is an important parameter to add high‐melting‐point element, which affects solidified temperature interval of solidification front and electromagnetic stirring.