Orientation-Dependent Tensile Flow Behavior of Zircaloy-4 at Room Temperature

Abstract

Present work describes a correlation between texture and sample orientation-based flow parameters of three different zircaloy-4 sheet materials. The three different sheet materials [slab route sheet (SRS), tube route sheet (TRS) and low-oxygen sheet (LOS)] corresponded to three different routes of fabrication and hence represented as variation in starting condition. All the three materials exhibited the presence of moderate texture. The intensity is more in TRS samples in comparison with that of the SRS and LOS. This in turn resulted in moderate values of anisotropy parameters. The strength parameters and elongation values have increased and decreased with increase in strain rate, respectively. The flow behavior of the alloys followed typical Holloman equation. The instantaneous work-hardening rate curves of the present alloys exhibited all the three typical regimes (i.e., regime I, regime II and regime III).