... to substantial changes in properties as a result of evolution of precipitates and matrix composition. The development of a new generation of alloys of Zr–Nb–Fe (Sn,O) system (that show higher resistance to the irradiation-induced growth, creep, and corrosion) required an examination of their microstructure...

... swelling of about 3.5 % at a damage of 83 dpa. TEM studies showed extensive void formation at 40 dpa and beyond in addition to extensive precipitation and formation of dislocation loops. The void density and size showed a progressive increase with displacement damage. The precipitates were identified...

...P Bossis; D Pêcheur; K Hanifi; J Thomazet; M Blat The corrosion and hydriding behavior of M5 and low tin Zircaloy-4 in PWR have been compared at high burn-ups (>70 GWd/t). Whereas low tin Zircaloy-4 reached about 90 μm in oxide thickness and is subjected to significant precipitation of hydride...

... on the radiation-enhanced precipitation of β-Nb needles and possible other defects or solute clusters. All these results allow a general discussion of evolution of SPP with regard to their initial structure and composition, and of the noteworthy irradiation stability of the M5™ up to high neutron fluence...

... is controlled by the microstructure, and both solid solution and precipitate effects impact corrosion performance. Several transition metals are beneficial for corrosion at low concentrations, but the most favorable alloy system is zirconium-niobium, because it offers flexibility in processing options. Strength...

...-compensated optical position-sensitive atom probe. Atom probe tomography revealed a high number density (∼3 × 10 24 m −3 ) of Cu-, Mn-, Ni-, Si-, and P-enriched precipitates and a lower number density (∼1 × 10 23 m −3 ) of P clusters. 30 12 2002 31 10 2003 04 10 2004 Journal of ASTM...

..., 2 MeV protons were used to introduce up to seven displacements per atom in Zircaloy 4 at 350°C. The effect on the intermetallic precipitates, the formation of dislocation loops and hardness were investigated by analytical and high-resolution transmission electron microscopy (TEM). In addition...