ISSN: 0090-3973
Published Online: 5 June 2008
Page Count: 6

FIMEC Tests on SPS sintered FeMo Ultra-Fine-Grained Alloys

Iacovone, B.
Dipartimento di Ingegneria Meccanica, Università di Roma-Tor Vergata,

Libardi, S.
Dipartimento di Ingegneria dei Materiali e Tecnologie Industriali, Università di Trento,

Molinari, A.
Dipartimento di Ingegneria dei Materiali e Tecnologie Industriali, Università di Trento,

Zadra, M.
K4Sint S.r.l., start-up of Trento University,

Montanari, R.
Dipartimento di Ingegneria Meccanica, Università di Roma-Tor Vergata,

Plini, P.
Dipartimento di Ingegneria Meccanica, Università di Roma-Tor Vergata,

(Received 25 July 2007; accepted 25 April 2008)

Abstract

The difference between yield strength measured by flat-top cylinder indenter for mechanical characterization (FIMEC) and by conventional tensile tests on micrometric, submicrometric, and nanostructured Fe-Mo alloys produced by spark plasma sintering (SPS) of high energy milled powders is less than 7 %, provided that materials have some tensile ductility. In the case of materials with a nanometric structure (grain size less than 100 nm) and some residual porosity, FIMEC results are not representative of tensile properties. In addition, FIMEC, due to its localized character, allows the material homogeneity to be evaluated.

Keywords:
FIMEC tests, spark plasma sintering, ultra-fine-grained materials

Paper ID: JTE101365
DOI: 10.1520/JTE101365
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