Effects of Geometric Constraint on Solidification Microstructural Development of Peritectic TiAl Alloys

S. Zhang; M.J.M. Krane; David R. Johnson

doi:10.4028/www.scientific.net/MSF.783-786.1147

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Evaluation of Tool Performance of Recycle-Type Fe₃Al Based Alloy for Pure Cu
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Feasibility of Cast and Wrought Co-Al-W-X Gamma-Prime Superalloys
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HomeMaterials Science ForumMaterials Science Forum Vols. 783-786Effects of Geometric Constraint on Solidification...

Effects of Geometric Constraint on Solidification Microstructural Development of Peritectic TiAl Alloys

Abstract:

Directional solidification of binary peritectic TiAl alloys through preforms with straight channels with spacing on the order of the dendritic tip radius were simulated using a modified solid-liquid interface tracking model. Interruption of the steady-state growth of the primary β-phase by constraint of solutal diffusion within very thin sections of ceramic preforms can lead to solidification conditions favorable for the nucleation and continued growth of the peritectic α-phase even after the growth front has exited the preform.

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Materials Science Forum (Volumes 783-786)

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1147-1152

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https://doi.org/10.4028/www.scientific.net/MSF.783-786.1147

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Online since:

May 2014

Authors:

S. Zhang*, M.J.M. Krane, David R. Johnson

Keywords:

Intermetallic, Microstructural Simulations, Solidification, Titanium Aluminide

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