Investigation of superplasticity in a Ni50Al20Fe30 intermetallic compound

Authors
Zhou, WL Guo, JT Chen, RS Zhou, JY
Citation
Wl. Zhou et al., Investigation of superplasticity in a Ni50Al20Fe30 intermetallic compound, MATER LETT, 51(4), 2001, pp. 342-346
Citations number
16
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
MATERIALS LETTERS
ISSN journal
0167577X → ACNP
Volume
51
Issue
4
Year of publication
2001
Pages
342 - 346
Database
ISI
SICI code
0167-577X(200111)51:4<342:IOSIAN>2.0.ZU;2-W
Abstract
The high-temperature deformation capacity of a multiphase Ni50Al20Fe30 inte rmetallic compound. displaying dynamic recrystallization (DRX), is explored in a wide range of testing condition. This intermetallics exhibited superp lasticity with a maximum elongation as high as 470% at 1023-1253 K and stra in rates of 1.67 x 10(-4) to 3.34 x 10(-3) s(-1). The superplastic deformat ion mechanism is proposed to be the grain boundary and phase boundary slidi ng accommodated by dislocation movement and DRX The superplastic fracture r esults from the interaction of microcrack and cavities. (C) 2001 Elsevier S cience B.V. All rights reserved.