Assessment and modelling of isothermal forging of intermetallic compounds part 2 - Ti3Al

Citation
Jcf. Millett et al., Assessment and modelling of isothermal forging of intermetallic compounds part 2 - Ti3Al, MATER SCI T, 16(6), 2000, pp. 617-624
Citations number
16
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Material Science & Engineering
Journal title
MATERIALS SCIENCE AND TECHNOLOGY
ISSN journal
0267-0836 → ACNP
Volume
16
Issue
6
Year of publication
2000
Pages
617 - 624
Database
ISI
SICI code
0267-0836(200006)16:6<617:AAMOIF>2.0.ZU;2-K
Abstract
In this, the second of four papers devoted to the isothermal forging of int ermetallic compounds, the Ti3Al based alloy Superalpha-2 has been deformed in compression at constant strain rate, over temperature and strain rate ra nges of 900-1050 degrees C and 0.0003-0.035 s(-1), respectively. Calculatio n of the material property parameters suggests that this material deforms v ia dynamic recrystallisation of the B2 phase. Microstructural examination h as shown that isothermal forging generates non-equilibrium microstructures. Deformation modelling has been successful in predicting the forging behavi our. Finally, the possibility of explosive grain growth immediately after f orging raises questions as to whether the mechanical properties of this mat erial can usefully be controlled by isothermal forging. MST/4316.