New approaches to understanding hydrogen embrittlement in steels

理解钢中氢脆的新方法

• 批准号: 2897405
• 金额: --
• 依托单位: Imperial College London
• 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-2897405
• 关键词: New; approaches; understanding; hydrogen; embrittlement

The aim of the first project is to develop a fundamental understanding of hydrogen embrittlement in steels, using a variety ofcharacterisation techniques including cryogenic Focussed Ion Beam (FIB) and Atom Probe Tomography (APT).The anticipated major expansion in hydrogen production, transportation and utilisation calls for massive investments ininfrastructure. One of the biggest challenges of the hydrogen economy is storage and transport. Current hydrogen storagetechnology involves either physical storage systems such as pressurised canisters (typically made from steel, which may beembrittled by the cryogenic temperatures and hydrogen exposures- or the synergistic effects of both) or materials such ashydrides which can store hydrogen in a reacted form, that will then need to be extracted. Hydrogen embrittlement in steel atcryogenic temperatures is poorly understood - and the lack of mechanistic insights means that material selection or bespokealloy development remains challenging. Steels that are resistant to embrittlement at room temperature are certainly availablebut tend to be expensive, and their behaviour under cryogenic temperatures has not been well-explored. Improved fundamentalunderstanding of the processes of hydrogen dissolution in the metal, and the role of microstructural features that act ashydrogen trap sites, will assist in screening steels for hydrogen service. This iCASE project will therefore focus on theexperimental investigation of hydrogen dissolution, diffusion and distribution in different steels - with the steels studied andcharacterized under cryo-conditions. Using new experimental facilities at Imperial, we have a chance to create a step-changein understanding the properties.

第一个项目的目的是使用各种特征化技术（包括低温焦点离子束（FIB）和Atom探针层析成像（APT），对钢中的氢含水进行基本了解。预计，预期的氢，运输和利用需要大规模投资的重大扩展。氢经济的最大挑战之一是存储和运输。当前的氢储存技术涉及物理储存系统，例如加压罐（通常由钢制成，它们可能由低温温度和氢暴露的材料或同时需要氢的材料，或者可以以反应形式储存的材料，或者需要提取氢的材料。钢育菌温度中的氢含氢的理解很少 - 缺乏机械洞察力意味着材料选择或Bespokealloy发育仍然具有挑战性。在室温下具有抵抗力的钢肯定是可用的，但往往很昂贵，而且在低温温度下的行为尚未得到充分探索。改善了金属中氢溶解过程的基本意识，以及对灰淀粉陷阱位点的微结构特征的作用，将有助于筛选钢钢进行氢服务。因此，该ICASE项目将集中于对不同钢的氢溶解，扩散和分布的实验研究 - 在冷冻条件下进行了研究和表征。使用帝国的新实验设施，我们有机会创建一个逐步改变特性的步骤。