Analytical characterization of secondary phases and void distributions in an ultrafine-grained ODS Fe-14Cr model alloy

作者：de Castro V^*; Leguey T; Auger M A; Lozano Perez S; Jenkins M L

来源：Journal of Nuclear Materials, 2011, 417(1-3): 217-220.

DOI：10.1016/j.jnucmat.2010.12.067

Two model Fe-14Cr alloys, one containing 0.3 wt.% of Y(2)O(3) particles, were fabricated by mechanical alloying of Fe and Cr elemental powders under a He atmosphere. They were subsequently consolidated and thermomechanically treated to produce ultra-fine grained materials. Cr-carbides and oxides were found in both alloys. The oxide dispersion-strengthened (ODS) alloy also contained a fine dispersion of nanoparticles, some of them having a Y-O rich core and a Cr-rich shell. Nanometric sized voids were found in both materials, often attached to secondary phases, dislocations and grain boundaries. Their sizes were significantly smaller in the ODS alloy.

• 出版日期2011-10-1