Paper Title:
Tensile Ductility of Cast TiAl Alloys
  Abstract

The microstructural characteristics and room temperature tensile ductility in some cast TiAl alloys were analyzed. It was found that grain refinement, either through Q&A treatment in boron-free alloys or through low dose of boron addition in beta solidifying alloys with lamellar microstructures, is not sufficient for good ductility. For cast alloys with convoluted microstructures and fine lamellar microstructures the orientation distribution of gamma grains/lamellar colonies plays an important role in controlling ductility. In those fine-grained alloys a highly random orientation distribution of gamma grains/lamellar colonies is essential to improvement in ductility.

  Info
Periodical
Materials Science Forum (Volumes 638-642)
Main Theme
Edited by
T. Chandra, N. Wanderka, W. Reimers , M. Ionescu
Pages
1336-1341
DOI
10.4028/www.scientific.net/MSF.638-642.1336
Citation
D. W. Hu, X. H. Wu, "Tensile Ductility of Cast TiAl Alloys", Materials Science Forum, Vols. 638-642, pp. 1336-1341, 2010
Online since
January 2010
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Price
$32.00
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