Strengthening behavior of beta phase in lamellar microstructure of TiAl alloys

Zhu, Hanliang, Seo, D. Y. and Maruyama, K. (2010) Strengthening behavior of beta phase in lamellar microstructure of TiAl alloys. JOM, 62 1: 64-69. doi:10.1007/s11837-010-0014-x


Author Zhu, Hanliang
Seo, D. Y.
Maruyama, K.
Title Strengthening behavior of beta phase in lamellar microstructure of TiAl alloys
Journal name JOM   Check publisher's open access policy
ISSN 1047-4838
1543-1851
Publication date 2010-01
Sub-type Article (original research)
DOI 10.1007/s11837-010-0014-x
Volume 62
Issue 1
Start page 64
End page 69
Total pages 6
Place of publication New York, NY, United States
Publisher Springer New York LLC
Collection year 2011
Language eng
Formatted abstract
β phase can be introduced to TiAl alloys by the additions of β stabilizing elements such as Cr, Nb, W, and Mo. The β phase has a body-centered cubic lattice structure and is softer than the α2 and γ phases in TiAl alloys at elevated temperatures, and hence is thought to have a detrimental effect on creep strength. However, fine β precipitates can be formed at lamellar interfaces by proper heat treatment conditions and the β interfacial precipitate improves the creep resistance of fully lamellar TiAl alloys, since the phase interface of γ/β retards the motion of dislocations during creep. This paper reviews recent research on high-temperature strengthening behavior of the β phase in fully lamellar TiAl alloys. © 2010 TMS.
Keyword Gamma-titanium aluminides
Fully-lamellar
Creep-behavior
Precipitation
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: School of Mechanical & Mining Engineering Publications
Official 2011 Collection
 
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Citation counts: TR Web of Science Citation Count  Cited 10 times in Thomson Reuters Web of Science Article | Citations
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Created: Sun, 31 Jan 2010, 00:03:22 EST