Development of oxide dispersion strengthened W alloys produced by hot isostatic pressing

作者：Martinez J; Savoini B; Monge M A; Munoz A^*; Pareja R

来源：Fusion Engineering and Design, 2011, 86(9-11): 2534-2537.

DOI：10.1016/j.fusengdes.2011.01.134

• Ultrafine-grained W alloys
• Oxide dispersion strengthening
• W-Ti alloys
• W-V alloys
• HIP sintered W alloys

A powder metallurgy technique has been developed to produce oxide strengthened W-Ti and W-V alloys using elemental powders and nanosized powders of La(2)O(3) or Y(2)O(3) as starting materials. The alloys consolidated by hot isostatic pressing resulted in high-density materials having an ultrafine-grained structure and microhardness values in the range 7-13 GPa. Atom force microscopy studies show a topographic relief in the Ti and V pools that appear in the consolidated alloys. This relief is attributed to the heterogeneous nucleation of martensite plates. The preliminary transmission electron microscopy studies have revealed that a dispersion of nanoparticles can be induced in these alloys produced via the present technique.

• 出版日期2011-10