Developing novel techniques for hydride characterisation in irradiated Zr alloys

开发辐照锆合金氢化物表征新技术

• 批准号: 2888266
• 金额: --
• 依托单位: University of Manchester
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2023
• 资助国家: 英国
• 起止时间: 2023 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2888266
• 关键词: Developing; novel; techniques; hydride; characterisation

Zirconium alloys are used to make the fuel rods in nuclear reactors. These rods spend their life sitting in hot, high-pressure water and hydrogen from the water can enter the zirconium and form regions of brittle zirconium hydride. These hydrides worsen the mechanical properties of the zirconium, meaning that the fuel rods need to be replaced prematurely. Over the past few decades, research into Zr-hydrides has been extensive. Even so, there are many aspects regarding fundamental Zr-H interactions that remain elusive. This is because hydrides are very hard to characterise. Hydrides are highly deformed, brittle structures with very different mechanical and physical properties to that of the Zr matrix. It is thus hard to make sure that both the Zr and hydride phases can be characterised well in a sample. This is where your project comes in: - Your first objective is to further develop hydride characterisation capability using state of the art 2D and 3D techniques before and after both proton and neutron irradiation. - The second focus of this project will be to understand and characterise the crack behaviour of these samples in 2D and 3D.

锆合金用于制造核反应堆的燃料棒。这些棒在高温高压的水中度过了它们的生命，水中的氢可以进入锆并形成脆性的氢化锆区域。这些杂质会使锆的机械性能变差，这意味着燃料棒需要过早更换。在过去的几十年里，对锆的研究已经很广泛。即便如此，关于基本Zr-H相互作用的许多方面仍然难以捉摸。这是因为它们很难被识别。氢化物是高度变形的脆性结构，具有与Zr基体非常不同的机械和物理性质。因此，很难确保样品中的Zr相和氢化物相都能很好地表征。这就是您的项目所在：-您的第一个目标是在质子和中子辐照前后使用最先进的2D和3D技术进一步开发氢化物表征能力。- 该项目的第二个重点将是了解和验证这些样品在2D和3D中的裂纹行为。