Study of the mechanical properties and effects of particles for oxide dispersion strengthened Zircaloy-4 via a 3D representative volume element model

• DOI: 10.1016/j.net.2021.10.044
• Publication Date: 2021-11-02T07:31:53Z
• Authors: Dong-Hyun Kim; Jong-Dae Hong; Hyochan Kim; Jaeyong Kim; Hak-Sung Kim
• Keywords: Cladding (metalworking); Volume fraction; Zirconium alloy

As an accident tolerant fuel (ATF) concept, oxide dispersion strengthened Zircaloy-4 (ODS Zry-4) cladding has been developed to enhance the mechanical properties of using laser processing technology. In this study, a simulation technique was established investigate and effects Y2O3 particles for ODS Zry-4. A 3D representative volume element (RVE) model considering parameters size, shape, distribution fraction (VF) particles. From RVE model, Young's modulus, coefficient thermal expansion (CTE) creep strain rate Zry-4 were effectively calculated. It observed that VF had significant effect on aforementioned properties. addition, predicted applied deformation under transient condition. The showed better performance, such as delay in large compared cladding, which also found experimentally. Accordingly, it is expected approach here can be efficiently employed predict more provide useful information with improve