NDLI: Grain refinement of a TiAl alloy by heat treatment through near gamma transformation

Content Provider	Springer Nature Link
Author	Wang, Yong Wang, J. N. Yang, Jie Xia, Qiangfei
Copyright Year	2001
Abstract	Casting of TiAl alloys is receiving more and more research because of its relatively low cost. One problem with this technology is that the coarse microstructure developed during solidification is harmful to material properties. Thus it is essential to seek an approach to refining the cast microstructure and this approach may also be applicable to cast components. In this study, a novel heat treatment route is proposed to obtain a fine fully lamellar structure from a cast TiAl alloy with a grain size of 1000 μm. This route consists of three steps, namely pretreatment to have a feathery γ structure, annealing in the α + γ region to have a fine near gamma structure and solution treatment to develop a fully lamellar structure with a grain size of ∼30 μm.
Starting Page	4465
Ending Page	4468
Page Count	4
File Format	PDF
ISSN	00222461
Journal	Journal of Materials Science
Volume Number	36
Issue Number	18
e-ISSN	15734803
Language	English
Publisher	Kluwer Academic Publishers
Publisher Date	2001-01-01
Publisher Place	Boston
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Polymer Sciences Industrial Chemistry/Chemical Engineering Characterization and Evaluation Materials Mechanics
Content Type	Text
Resource Type	Article
Subject	Ceramics and Composites Mechanics of Materials Mechanical Engineering Polymers and Plastics

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Grain refinement of a TiAl alloy by heat treatment through near gamma transformation