In situ study of recovery and recrystallization of Zr-2.5Nb alloy

Zirconium alloys are widely used in the nuclear industry due to their low neutron capture section and good resistance to corrosion, irradiation and creep. The microstructure of the Zr nuclear rector components evolves all along the manufacturing route and depending on process parameters it can impact the subsequent processes or the final component properties. It is therefore necessary to understand and master the structural evolution to increase the quality of the material. It is experimental evidence that recrystallization of the Zr-2.5Nb alloy containing metastable beta-Zr phase is very difficult if the material was not highly deformed. For finding the optimum processing route a comprehensive understanding of the phenomenon is necessary. The aim of the present proposal is performing an in situ analysis of the recovery and recrystallization for understanding the role of the stored energy and of the beta-Zr to beta-Nb transformation on the recrystallization process.

锆合金凭借较低的中子俘获截面（neutron capture section）与优异的耐蚀、抗辐照及抗蠕变性能，被广泛应用于核工业领域。锆合金核反应堆构件的微观组织在整个制造流程中持续演变，且工艺参数会对其后续加工过程及最终构件的性能产生影响。因此，深入理解并掌握其组织演变规律，对于提升材料质量具有重要意义。实验研究证实，对于含有亚稳态β-Zr相（metastable beta-Zr phase）的Zr-2.5Nb合金，若未经历大变形，其再结晶过程将极为困难。为确定最优加工工艺路线，需对该现象形成全面且深入的认知。本研究旨在通过对回复与再结晶过程开展原位分析（in situ analysis），阐明储存能以及β-Zr向β-Nb转变（beta-Zr to beta-Nb transformation）在再结晶过程中的作用机制。

搜集汇总

背景与挑战

背景概述

该数据集是关于锆-2.5铌合金回复与再结晶的原位研究，旨在理解存储能量和β-Zr到β-Nb转变对再结晶过程的影响，以优化核工业中锆合金的加工路线。数据集包括实验数据和报告，属于应用材料科学领域，由欧洲同步辐射设施于2025年发布，采用开放获取许可。