Abstract Internal friction and dynamic elasticity moduli on thin reeds of nanostructured Al, Fe, FeAl and Fe3Al intermetallics prepared by ball milling have been measured. A relaxational damping peak in pure metals at 350–500 K and a modulus increase at 450–500 K without appreciable grain growth has been detected. Moreover, magnetoelastic coupling dependent on grain size has been observed in iron. In the nanophase intermetallic aluminides a strong relaxational damping peak was observed in the 700–800 K range. These results are briefly discussed with reference to the anelastic behaviour of similar coarse grained materials.
E. Bonetti, E. (1995). Anelasticity and structural stability in nanostructured metals and compounds [10.1016/0965-9773(95)00139-5].
Anelasticity and structural stability in nanostructured metals and compounds
E. Bonetti
Primo
Supervision
;E. G. CampariSecondo
Validation
;
1995
Abstract
Abstract Internal friction and dynamic elasticity moduli on thin reeds of nanostructured Al, Fe, FeAl and Fe3Al intermetallics prepared by ball milling have been measured. A relaxational damping peak in pure metals at 350–500 K and a modulus increase at 450–500 K without appreciable grain growth has been detected. Moreover, magnetoelastic coupling dependent on grain size has been observed in iron. In the nanophase intermetallic aluminides a strong relaxational damping peak was observed in the 700–800 K range. These results are briefly discussed with reference to the anelastic behaviour of similar coarse grained materials.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.