Paper Title:
Microstructure Evolution of Ti-Al Peritectic System during the Initiated Stage of Directional Solidification
  Abstract

The microstructure evolution of Ti-Al peretectic system in transient stage and steady state in directional solidification was predicted via theoretical analysis. The solute distribution controlled by diffusion at and ahead the solid-liquid interface will determine whether the properitectic and peritectic phases can nucleate and grow ahead of the opposing solid phase. The formation of banding structure is possible in a certain composition range. At the steady state, a microstructure selection map was set up based on interface response function model. The microstructure of TiAl alloys with different aluminum content was studied with Bridgman directional solidification method. Some evidence in the experiment has been found to support the theoretical prediction.

  Info
Periodical
Materials Science Forum (Volumes 546-549)
Edited by
Yafang Han et al.
Pages
1447-1450
DOI
10.4028/www.scientific.net/MSF.546-549.1447
Citation
Y. Q. Su, C. Liu, X. Z. Li, J. J. Guo, H. Z. Fu, "Microstructure Evolution of Ti-Al Peritectic System during the Initiated Stage of Directional Solidification", Materials Science Forum, Vols. 546-549, pp. 1447-1450, 2007
Online since
May 2007
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$32.00
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