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Nuclear fusion and generation-IV fission reactor designs aim for operating temperatures in the range 500°C–1000°C. To optimise neutron efficiency, materials with low neutron cross section are sought for the fuel clad, or tritium breeding module. However, conventional zirconium alloys are precluded due to limited oxidation and creep performance at temperatures >400°C. Two approaches have been explored to meet...

On 3.02.2025, NCBJ's NOMATEN Centre of Excellence hosted experts from Bechtel Poland, a leader in engineering and construction. The study visit discussed opportunities for collaboration in research, testing, certification and qualification of materials used in PWR technology.

As the investigation of the materials' nanoindentation behavior is a nondestructive and powerful tool in the field of micromechanics, it is of no surprise that it has been attracting more attention from both researchers and engineers. Nanoindentation is a very versatile technique and in recent years it has been...

Understanding the evolution of material’s properties under irradiation as well as it connection with the underlying microstructure is a key point for both the development of radiation tolerant materials and nano-materials with tunable properties. To study this connection, we are modeling...

We will show the difficulties encountered by phase-field methods to describe the evolution of materials under irradiation. After a brief theoretical review of phase-field methods, we present the difficulties inherent in their use under irradiation. In particular...

We will show the interest of phase field methods to describe the evolution of microstructure in materials by discussing the nucleation and growth process in FeCr alloys during isochronous annealing. We have implemented...

Only recently, the development of fast differential scanning calorimetry (or chip-calorimetry) has allowed us to characterize in situ the glass transition response of metallic glasses during cooling from the liquid over a wider range of time scales employing scanning rates from 100 K/s up to 50,000 K/s. The generally accepted description is that the vitrification kinetics should exhibit the same temperature dependence as the relaxation time for the alpha-process. However, we have recently observed that vitrification at deep undercooling may occur

Laser powder bed fusion (LPBF) enables the fabrication of large-dimensioned bulk metallic glass (BMG) components; however, we are only just learning how to control the LPBF process to obtain specific mechanical properties. LPBF was used to produce dense and fully amorphous Zr59.3Cu28.8Nb1.5Al10.4 BMG samples from two different starting powders. One powder had a relatively finer particle size range of 10-45 μm and the other had a relatively coarser particle size range of 25-63 μm. Fully amorphous samples were achieved for both powders within a large processing window of

The safety and security of nuclear and radiological materials and their associated facilities share a common objective which is to ensure the protection of the population and the environment from an undue radiological hazard. Historically, many analytical methods...

Uranium-10wt.% molybdenum (U-10Mo) fuels are currently under consideration for the conversion of high-enriched U to low-enriched U fuels within high-performance research and test reactors to minimize proliferation concerns. These fuels are also of interest for small modular reactors and fast reactors, which require differing fabrication techniques. In general...