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Microstructure evolution of Ti-Al peritectic system during the initiated stage of directional solidification

  • Yanqing Su*
  • , Chang Liu
  • , Xinzhong Li
  • , Jingjie Guo
  • , Hengzhi Fu
  • *Corresponding author for this work
  • Harbin Institute of Technology

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

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.

Original languageEnglish
Title of host publicationProgress in Light Metals, Aerospace Materials and Superconductors
PublisherTrans Tech Publications Ltd
Pages1447-1450
Number of pages4
EditionPART 3
ISBN (Print)0878494324, 9780878494323
DOIs
StatePublished - 2007
Event2006 Beijing International Materials Week, 2006 BIMW -International Conference on Aerospace Materials, ICAM 2006 - Beijing, China
Duration: 25 Jun 200630 Jun 2006

Publication series

NameMaterials Science Forum
NumberPART 3
Volume546-549
ISSN (Print)0255-5476
ISSN (Electronic)1662-9752

Conference

Conference2006 Beijing International Materials Week, 2006 BIMW -International Conference on Aerospace Materials, ICAM 2006
Country/TerritoryChina
CityBeijing
Period25/06/0630/06/06

Keywords

  • Directional solidification
  • Microstructure selection
  • Peritectic reaction
  • TiAl alloy

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