Mechanical behaviour of NiAl and Ni3Al ordered compounds entering the nano-grain size regime

Authors
Bonetti, E Campari, EG Pasquini, L Sampaolesi, E Scipione, G
Citation
E. Bonetti et al., Mechanical behaviour of NiAl and Ni3Al ordered compounds entering the nano-grain size regime, NANOSTR MAT, 12(5-8), 1999, pp. 895-898
Citations number
6
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science","Material Science & Engineering
Journal title
NANOSTRUCTURED MATERIALS
ISSN journal
09659773 → ACNP
Volume
12
Issue
5-8
Year of publication
1999
Part
B
Pages
895 - 898
Database
ISI
SICI code
0965-9773(199907)12:5-8<895:MBONAN>2.0.ZU;2-#
Abstract
The elastic energy dissipation and dynamic modulus of several intermetallic compounds with the NiAl (B2) and Ni3Al (L1(2)) composition and different g rain sizes were measured. The grain dimensions were deduced by XRD data ana lysis. These alloys exhibit a temperature increasing background damping whi ch raises faster as the grain size enter the nanometric regime. The elastic modulus of out of stoichiometry single crystals increases up to 20 % with temperature in a reproducible manner. (C) 1999 Acta Metallurgica Inc.