Control of the homogeneity of the lamellar structure of a TiAl alloy refined by heat treatment

Authors
Yang, J Wang, JN Wang, Y Xia, QF Zhang, B
Citation
J. Yang et al., Control of the homogeneity of the lamellar structure of a TiAl alloy refined by heat treatment, INTERMETALL, 9(5), 2001, pp. 369-372
Citations number
15
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
INTERMETALLICS
ISSN journal
09669795 → ACNP
Volume
9
Issue
5
Year of publication
2001
Pages
369 - 372
Database
ISI
SICI code
0966-9795(200105)9:5<369:COTHOT>2.0.ZU;2-J
Abstract
Recently, we reported a method for grain refinement of TiAl alloys by cycli c heat treatment (CHT) only. However, the final microstructure appeared inh omogeneous. containing grains of different sizes. In this study, a modified route is provided for grain refinement including a heat treatment step jus t below the alpha transus temperature, it is particularly shown that a coar se fully lamellar structure can be refined to a fine one with a size of sim ilar to 50 mum and the homogeneity of the microstructure can be significant ly improved. (C) 2001 Elsevier Science Ltd. All rights reserved.