2024-03-29T05:22:53Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/561522021-05-11T00:53:17Zcom_10261_66com_10261_3col_10261_319
Amorphous and nanostructuredAl–Fe–Ndpowders obtained by gasatomization
Cardoso, Kátia Regina
García Escorial, Asunción
Lieblich, Marcela
Botta F, W.J.
Amorphous
Nanostructure
Aluminium
Atomization
In this work, an Al90Fe5Nd5 alloy was atomized and its microstructure, thermal stability, transformation sequence and microhardness investigated as a function of powder particle size. The atomized powder contained on average a 25% volume fraction of amorphous materials, reaching 42% in the <25 μm size range. With thermal treatments the material evolved through three exothermic reactions, which involved the formation of a nanostructured state Fe- and Nd-enriched amorphous matrix+fcc-Al nanocrystals at 240°C, the formation of a metastable ternary phase at 360°C and, finally, the formation of the equilibrium Al10Fe2Nd and Al11Nd3 phases. The high thermal stability of the amorphous+fcc-Alnanostructured state, 120°C, and the high hardness, 280 Hv, of this alloy make it a good candidate for consolidate bulk material for technological applications
2012-09-12T10:02:17Z
2012-09-12T10:02:17Z
2001
artículo
Materials Science and Engineering:A 315 (1-2) : 89-97 (2001)
0921-5093
http://hdl.handle.net/10261/56152
10.1016/S0921-5093(01)01197-2
eng
closedAccess
Elsevier